3rd November 2025

Categories

This blog uses categories and tags. Categories are the more generic term, while tags are used in a more specific way.

AndroidJ-PilotVBAcoolingmathematicssociology
C / C++JavaWordPressdatabasenetworkstatistics
COBOLJavaScriptX11economyorchestratax
CPULinuxastronomygalleryperformancetransportation
CUDANVidiaaviationguitarpersonaluncategorized
FortranOrganizationblogginghardwarepianoweb-browsing
GoPHPbugshistorypopweb-server
GooglePerlclassichumorprogramming
HDDPythoncollegemainframesecurity

Android

  1. 2013-03-13: Screenshots on Nexus 4 (Android 4.x)
  2. 2013-08-04: Google Now Emergency Alert
  3. 2013-08-04: ssh and rsync for Android
  4. 2013-09-08: India is now the third largest Smartphone market in the world - Android Authority
  5. 2013-12-30: Performance of Dalvik versus native C compilation
  6. 2014-10-21: Review of the OnePlus One Smartphone
  7. 2014-11-19: I have OnePlus invites to give away
  8. 2014-12-30: Three Free Invites For the OnePlus One
  9. 2015-05-24: Installing OxygenOS 1.0 on the OnePlus One Smartphone
  10. 2015-07-27: Accessing Android phone via USB cable
  11. 2015-10-10: Upgrading from OxygenOS 1.0.0 to 1.0.3 on the OnePlus One Smartphone
  12. 2015-11-23: One Free Invite for the OnePlus X
  13. 2016-04-12: Upgrading from OxygenOS 1.0.3 to 2.1.4 on the OnePlus One Smartphone
  14. 2019-06-29: Google Chrome in Android Cannot Clear Cookies
  15. 2020-03-12: ssh and rsync for Android, Termux
  16. 2020-03-19: J-Pilot Data on Android Phone: Contacts
  17. 2022-05-26: Upgrading OnePlus Five to Oppo Reno4
  18. 2023-11-29: Linux on Android Devices
  19. 2024-11-25: Upgrading Oppo Reno4 to Xiaomi 14T Pro
  20. 2024-12-15: Installing Simplified Saaze on Android
  21. 2025-09-09: Clear Cache in Brave for Android

C / C++

  1. 2013-01-07: Number of Combinations for German Tax Id
  2. 2013-01-11: OpenGL Program: Earth with Moon Rotating around Sun
  3. 2013-04-30: 0x5f3759df - calculating inverse square root
  4. 2013-06-22: Memory Limitations with IBM Enterprise COBOL Compiler
  5. 2013-06-29: GNU C: Extensions to the C Language Family
  6. 2013-06-29: Hash functions: An empirical comparison -- article by Peter Kankowski
  7. 2013-06-30: Hashing Just Random Numbers
  8. 2013-06-30: Very simple SHA1 test program written in C
  9. 2013-07-27: SUNDIALS (SUite of Nonlinear and DIfferential/ALgebraic equation Solvers)
  10. 2013-09-21: Georg Hager's Blog: Intel vs. GCC for the OpenMP vector triad: Barrier shootout!
  11. 2013-11-30: Working with System V IPC queues
  12. 2013-12-01: Output from deviceQuery for NVidia GTX 560
  13. 2013-12-30: Performance of Dalvik versus native C compilation
  14. 2014-01-13: Changing euid (effective user ID)
  15. 2014-05-10: Simple Exercises for a C Programming Language Course
  16. 2014-05-15: Patching Faulty EDID Information
  17. 2014-07-05: Splitting Large Files on Microsoft Windows
  18. 2014-07-16: Day 1, Workshop Programming of Heterogeneous Systems in Physics
  19. 2014-07-17: Day 2, Workshop Programming of Heterogeneous Systems in Physics
  20. 2014-10-27: Effect of Optimizer in gcc on Intel/AMD and Power8
  21. 2015-02-12: Downloading Binary Data, for example Boost C++ Library
  22. 2015-05-14: Speeding-Up Software Builds: Parallelizing Make and Compiler Cache
  23. 2016-02-03: Performance Comparison of mmap() versus read() versus fread()
  24. 2016-03-23: Slides on OpenMP by Christian Terboven & Dirk Schmidl
  25. 2016-04-05: Performance Comparison C vs. Lua vs. LuaJIT vs. Java
  26. 2016-05-23: Convert ASCII to Hex and vice versa in C and Excel VBA
  27. 2016-05-30: GCC 6.1 Compiler Optimization Level Benchmarks
  28. 2016-11-22: Operation Costs Measured in CPU Clock Cycles
  29. 2017-06-26: Text Analysis using Concordance
  30. 2017-07-17: C Pointer Surprises
  31. 2018-01-23: Hashing with Iterator in C
  32. 2018-01-30: Rewriting Perl to plain C
  33. 2018-02-06: Parallelization and CPU Cache Overflow
  34. 2020-04-29: J-Pilot Plugin For SQLite Export
  35. 2020-05-05: Performance Comparison in Computing Exponential Function
  36. 2020-05-14: Performance Comparison Pallene vs. Lua 5.1, 5.2, 5.3, 5.4 vs. C
  37. 2020-06-23: Calling C from Julia
  38. 2021-02-01: Performance comparison Ryzen vs. Intel vs. Bulldozer vs. ARM
  39. 2022-01-23: IMS/DC MFS To PHP
  40. 2022-11-13: Fixed Block Files
  41. 2022-11-19: Introduction to Hashing
  42. 2023-03-25: Performance Comparison C vs. Java vs. Javascript vs. PHP vs. Python vs. Cobol vs. Dart
  43. 2024-02-24: MD4C PHP Extension
  44. 2024-03-18: Is Binary Compiled with Frame Pointer Support?
  45. 2025-05-20: Computing Generalized Eigenvalues with LAPACK
  46. 2025-05-25: Filtering Lines with Specific Length
  47. 2025-06-01: Stability Regions for BDF and Tendler's Formulas

COBOL

  1. 2011-08-14: Mainframe Rehosting
  2. 2013-06-09: Mainframe Rehosting: Cost Reduction, Hardware Sizing, Tools, and Methodology
  3. 2013-06-22: Memory Limitations with IBM Enterprise COBOL Compiler
  4. 2013-06-30: Hashing Just Random Numbers
  5. 2018-01-30: Rewriting Perl to plain C
  6. 2021-08-17: Generating JSON with COBOL
  7. 2021-08-19: Printing COBOL Section Names
  8. 2021-10-04: Installing IBM COBOL for Linux on Arch Linux
  9. 2021-10-05: Comparing GnuCOBOL to IBM COBOL
  10. 2022-01-23: IMS/DC MFS To PHP
  11. 2022-03-20: Testing COBOLworx gcc-cobol
  12. 2023-02-12: Testing COBOLworx gcc-cobol #2
  13. 2024-03-02: Installing IBM COBOL for Linux on Arch Linux #2
  14. 2024-05-03: Converting UNIX Timestamps to Year, Month, Day in COBOL
  15. 2024-05-29: IGYRC5108-U: IBM Cobol Compiler Terminating

CPU

  1. 2012-12-29: CPU Usage Time Is Dependant on Load
  2. 2013-01-08: Computer Cooling
  3. 2013-04-21: Counting to Ten on Linux
  4. 2013-06-16: Running CPU/GPU Intensive Jobs on Titan Supercomputer
  5. 2013-10-06: AMD Bulldozer CPU Architecture Overview
  6. 2013-12-21: What is generally better: 64-bit or 32-bit?
  7. 2015-07-23: PC overheating
  8. 2016-11-22: Operation Costs Measured in CPU Clock Cycles
  9. 2018-02-06: Parallelization and CPU Cache Overflow
  10. 2020-07-07: ASRock DeskMini A300M with AMD Ryzen 3400G
  11. 2020-11-13: Windows 10 very slow after reboot
  12. 2025-07-19: ASRock DeskMini X300 with AMD Ryzen 5700G

CUDA

  1. 2013-03-05: GTC 2012 Keynote by Jen-Hsun Huang (Part 03): The NVIDIA Kepler GPU Architecture
  2. 2013-05-16: CUDA without X Window System
  3. 2013-06-01: Vasily Volkov (UC Berkeley): Unrolling parallel loops
  4. 2013-06-16: Running CPU/GPU Intensive Jobs on Titan Supercomputer
  5. 2013-06-19: CUDA Performance
  6. 2013-09-06: Newer GPUGRID Tasks Keep GPU Really Hot
  7. 2013-09-09: Proportion of Papers on hgpu.org
  8. 2013-12-01: Output from deviceQuery for NVidia GTX 560
  9. 2014-05-03: Announcement: Workshop Programming of Heterogeneous Systems in Physics, July 2014
  10. 2014-07-16: Day 1, Workshop Programming of Heterogeneous Systems in Physics
  11. 2014-07-17: Day 2, Workshop Programming of Heterogeneous Systems in Physics
  12. 2015-02-07: Announcement: 11th International Conference on Parallel Programming and Applied Mathematics
  13. 2020-02-08: Contribution to scientific publications in GPUGrid

Fortran

  1. 2013-07-27: SUNDIALS (SUite of Nonlinear and DIfferential/ALgebraic equation Solvers)
  2. 2013-09-21: Georg Hager's Blog: Intel vs. GCC for the OpenMP vector triad: Barrier shootout!
  3. 2025-05-20: Computing Generalized Eigenvalues with LAPACK

Go

  1. 2017-04-24: Converting WordPress Export File to Hugo
  2. 2017-06-19: Contributing to Hugo Static

Google

  1. 2013-03-13: Google Search says "Happy Birthday"
  2. 2013-05-06: John Raff / Dmitry Sandalov: Access Google translate from a terminal
  3. 2013-08-04: Google Now Emergency Alert
  4. 2013-10-21: Google Earth Used to Reunite Australian Boy With His Indian Mother
  5. 2014-01-15: Ignoring Security Certificate Errors in Google Chrome
  6. 2015-03-21: Importing Calendar Data to Google-Calendar
  7. 2019-06-29: Google Chrome in Android Cannot Clear Cookies

HDD

  1. 2013-02-12: ext3 vs. ext4
  2. 2013-09-11: Harddisk Drive Speed in MB/s
  3. 2014-12-28: Hard-Disk and USB Drive Speed Comparisons
  4. 2015-05-25: Hard-Disk and SSD Speed Comparisons
  5. 2016-07-27: SSD Speed on Dell XPS 13 9350
  6. 2020-08-09: SSD Speed on Dell XPS 13 9350 with Samsung EVO 970 Plus

J-Pilot

  1. 2013-02-17: jpilot-dump + jpilot-merge
  2. 2013-02-27: Possible Enhancements to J-Pilot
  3. 2013-05-01: A Praise for IceWM
  4. 2014-04-14: Syncing with J-Pilot via Bluetooth
  5. 2015-03-21: Importing Calendar Data to Google-Calendar
  6. 2020-03-19: J-Pilot Data on Android Phone: Contacts
  7. 2020-04-27: SQL Datamodel For J-Pilot
  8. 2020-04-29: J-Pilot Plugin For SQLite Export
  9. 2020-06-09: Splitting and anti-merging vCard files
  10. 2021-03-02: Testing J-Pilot feature-gtk3 branch
  11. 2022-10-09: Renumbering J-Pilot SQLite Data
  12. 2022-11-06: Crashing J-Pilot
  13. 2022-12-04: SQLite Storage for J-Pilot
  14. 2023-04-08: J-Pilot Usage Statistics
  15. 2023-05-06: Accessing J-Pilot Data From Mobile And Web
  16. 2025-03-06: Building J-Pilot and Pilot-Link on Linux

Java

  1. 2014-01-19: Cisco 2014 Annual Security Report: Java continues to be most vulnerable of all web exploits
  2. 2019-01-19: java.sql.SQLRecoverableException: IO Error: Connection reset by peer, Authentication lapse
  3. 2020-12-19: Compiling Java source to binary (native)

JavaScript

  1. 2018-07-22: Passing HashMap from Java to Java Nashorn
  2. 2020-05-25: Hosting Static Content with surge.sh
  3. 2020-05-26: Hosting Static Content with now.sh
  4. 2020-05-27: Hosting Static Content with netlify.app
  5. 2021-09-18: Mermaid: A JavaScript Library for Diagrams
  6. 2021-09-19: StackEdit: A Markdown Editor
  7. 2021-12-14: URL Count Statistics
  8. 2022-07-31: Hosting Static Content with Cloudflare
  9. 2022-08-08: Exploring Cloudflare Workers
  10. 2023-10-23: Pagefind: Searching in Static Sites
  11. 2024-06-03: Dark Mode on Website

Linux

  1. 2013-01-11: OpenGL Program: Earth with Moon Rotating around Sun
  2. 2013-01-29: inotify-tools: inotifywait
  3. 2013-02-12: ext3 vs. ext4
  4. 2013-02-17: jpilot-dump + jpilot-merge
  5. 2013-02-24: Dead Keys and Compose Key
  6. 2013-02-27: Possible Enhancements to J-Pilot
  7. 2013-03-21: linux-3.8.4: Compile times
  8. 2013-04-21: Counting to Ten on Linux
  9. 2013-04-30: linux-3.9: Compile times
  10. 2013-05-05: Phoronix: NVIDIA vs. Nouveau Drivers On Ubuntu 13.04
  11. 2013-05-06: John Raff / Dmitry Sandalov: Access Google translate from a terminal
  12. 2013-05-15: Porting Source to Linux - Valve's Lessons Learned
  13. 2013-05-16: CUDA without X Window System
  14. 2013-05-29: How to use TrueType Fonts in xterm or uxterm
  15. 2013-06-09: Mainframe Rehosting: Cost Reduction, Hardware Sizing, Tools, and Methodology
  16. 2013-08-25: Copy Directories with Symbolic Links via ssh
  17. 2013-09-08: Inhibit Annoying Message of the Day in Ubuntu
  18. 2013-09-12: Dramatic Faster Sorting in Linux Using Nsort
  19. 2013-09-29: Re-installing Grub when MS Windows Destroyed It
  20. 2013-10-02: Force rsync Not To Use Timestamps
  21. 2013-11-30: Working with System V IPC queues
  22. 2013-12-12: Linux commands: expect and kibitz
  23. 2013-12-21: What is generally better: 64-bit or 32-bit?
  24. 2014-01-07: Plotting Power Consumption of my Desktop PC
  25. 2014-01-10: Working with System V IPC queues in Perl and PHP
  26. 2014-01-13: Changing euid (effective user ID)
  27. 2014-01-15: Ignoring Security Certificate Errors in Google Chrome
  28. 2014-02-09: Scheduling Cron Jobs on Business Days
  29. 2014-03-23: Enabling Power-Aware Applications on Linux Using Cyrogenic Module
  30. 2014-04-01: Youtube video to mp3
  31. 2014-04-14: Syncing with J-Pilot via Bluetooth
  32. 2014-04-26: Installing Ubuntu 14.04 Server Edition
  33. 2014-05-15: Patching Faulty EDID Information
  34. 2014-05-30: Installing Missing Debian Packages for Google Chrome
  35. 2014-06-01: Setting-Up LUKS/dm-crypt for External USB-Drive
  36. 2014-07-07: Creating User Account With Empty Password on Linux
  37. 2014-07-12: HDMI Audio on Intel NUC
  38. 2014-08-08: Google Chrome Became a Performance Hog
  39. 2014-09-16: The Cost of Installing wine
  40. 2014-10-27: Effect of Optimizer in gcc on Intel/AMD and Power8
  41. 2015-01-17: Setting up SLURM on Multiple Machines
  42. 2015-03-06: Testing file-size limits
  43. 2015-10-05: Linux pam and /etc/shells
  44. 2015-11-07: nginx: 413 Request Entity Too Large - File Upload Issue
  45. 2016-02-03: Performance Comparison of mmap() versus read() versus fread()
  46. 2016-05-02: No YouTube Videos on Google Chrome v50
  47. 2016-09-28: LibreOffice Impress Becoming Very Slow After Copy/Paste
  48. 2016-10-04: Setting Keyboard-Language in IceWM
  49. 2016-10-18: Running bacman in parallel
  50. 2016-10-26: Bluetooth Headphones in Arch Linux
  51. 2016-12-14: slurmd confused of pid-file
  52. 2017-01-30: Downgrading PulseAudio with downgrade.sh
  53. 2017-02-13: Switching from ext4 to btrfs
  54. 2017-03-15: Make USB Stick Bootable
  55. 2017-03-20: Wiping Disks
  56. 2017-04-14: Using Odroid as IP Router
  57. 2017-04-19: Browsing Linux Kernel Source with Grokbit
  58. 2018-02-13: Unix sort Issue
  59. 2018-03-14: Set-Up "Let's Encrypt" for Hiawatha Web-Server
  60. 2018-04-17: Remote Unlocking of Encrypted Disks
  61. 2018-05-03: Instant Messaging Client Pidgin and Skype / Lync
  62. 2018-05-17: Using Scooter Software Beyond Compare
  63. 2018-06-15: Balking ARM ArchLinux Update
  64. 2020-01-05: slurmctld showing nodes as 'drain'
  65. 2020-03-26: Sharing Terminal Screen Using Tmux
  66. 2020-07-14: Blocking IP addresses with ipset
  67. 2020-08-29: Configure boot settings in UEFI
  68. 2021-01-23: dumpe2fs: When was my hard-drive first formatted?
  69. 2021-02-21: ssh as SOCKS server
  70. 2021-02-28: Analysis And Usage of SSHGuard
  71. 2021-03-02: Testing J-Pilot feature-gtk3 branch
  72. 2021-03-15: Add Disjoint IP Addresses To SSHGuard Blacklist
  73. 2021-06-05: Using NUC as WLAN Router
  74. 2021-10-04: Installing IBM COBOL for Linux on Arch Linux
  75. 2021-10-26: Copy Directories to FTP-Server
  76. 2022-05-02: Copy Arch Linux to SSD
  77. 2022-05-06: Multi Tenancy MS-Teams
  78. 2022-12-10: Updating AUR Package
  79. 2023-03-30: SQLite3 sqldiff command
  80. 2023-08-07: cpio command cheat sheet
  81. 2023-08-13: Installing OpenLiteSpeed on Arch Linux
  82. 2023-11-29: Linux on Android Devices
  83. 2024-02-19: Let's Encrypt Certbot Usage with NGINX
  84. 2024-03-02: Installing IBM COBOL for Linux on Arch Linux #2
  85. 2024-04-10: Location of core files in Arch Linux
  86. 2024-04-13: Installing and Configuring the H2O Web-Server
  87. 2024-08-25: Replacing SSHGuard with 20 Lines of Perl Code
  88. 2024-10-26: UNIX Process Substitution
  89. 2024-11-19: snd_hda_intel: no codecs initialized
  90. 2025-03-06: Building J-Pilot and Pilot-Link on Linux
  91. 2025-04-17: Most Used Linux Commands
  92. 2025-04-26: Considerations on GDGs on Linux
  93. 2025-08-02: First Impressions on Oracle Cloud
  94. 2025-08-04: Installing Simplified Saaze on Oracle Cloud

NVidia

  1. 2013-03-05: GTC 2012 Keynote by Jen-Hsun Huang (Part 03): The NVIDIA Kepler GPU Architecture
  2. 2013-05-05: Phoronix: NVIDIA vs. Nouveau Drivers On Ubuntu 13.04
  3. 2013-05-15: Porting Source to Linux - Valve's Lessons Learned
  4. 2013-09-06: Newer GPUGRID Tasks Keep GPU Really Hot
  5. 2013-09-09: Proportion of Papers on hgpu.org
  6. 2014-05-03: Announcement: Workshop Programming of Heterogeneous Systems in Physics, July 2014
  7. 2014-07-16: Day 1, Workshop Programming of Heterogeneous Systems in Physics
  8. 2014-07-17: Day 2, Workshop Programming of Heterogeneous Systems in Physics

Organization

  1. 2013-05-21: The New Digital Company: Distributed, Online, and Transparent
  2. 2013-10-18: What Makes a Good Programming Environment?
  3. 2014-06-28: 7-Day Week, 6-Day Week, 5-Day Week, Soviet Calendar

PHP

  1. 2013-07-24: HipHop Virtual Machine can run WordPress
  2. 2013-09-18: Graphs with JpGraph by Asial
  3. 2014-01-10: Working with System V IPC queues in Perl and PHP
  4. 2014-07-10: No Perl and PHP on Mainframe from IBM
  5. 2021-03-29: PHP extension seg-faulting
  6. 2021-09-02: Considerations Regarding Simplifications of Saaze
  7. 2021-10-18: Profiling PHP Programs
  8. 2021-10-31: Simplified Saaze
  9. 2022-01-23: IMS/DC MFS To PHP
  10. 2022-03-21: PHPMagazin On Simplified Saaze
  11. 2022-04-05: Adding Categories to Saaze
  12. 2023-03-11: Simple Web-Clipboard
  13. 2023-03-25: Performance Comparison C vs. Java vs. Javascript vs. PHP vs. Python vs. Cobol vs. Dart
  14. 2023-05-06: Accessing J-Pilot Data From Mobile And Web
  15. 2023-07-09: Profiling PHP Programs #2
  16. 2023-08-27: Mixing PHP into Markdown
  17. 2023-10-29: Simplified Saaze Monitored with PHPSPY
  18. 2024-02-11: Considerations on a Newsletter Program
  19. 2024-02-24: MD4C PHP Extension
  20. 2024-02-27: Parallelizing the Output of Simplified Saaze
  21. 2024-10-01: XHProf with NGINX
  22. 2025-07-20: PHP stuttering under load

Perl

  1. 2014-01-10: Working with System V IPC queues in Perl and PHP
  2. 2014-02-09: Scheduling Cron Jobs on Business Days
  3. 2014-02-24: Calculating number of seats in parliament using d'Hondt's method
  4. 2014-07-10: No Perl and PHP on Mainframe from IBM
  5. 2015-01-05: Migrating from delicious.com to WordPress
  6. 2017-06-26: Text Analysis using Concordance
  7. 2018-01-30: Rewriting Perl to plain C
  8. 2018-02-06: Parallelization and CPU Cache Overflow
  9. 2018-02-22: Unix Command comm: Compare Two Files
  10. 2020-06-09: Splitting and anti-merging vCard files
  11. 2021-06-21: WordPress.com Bulk Update
  12. 2021-12-14: URL Count Statistics
  13. 2022-04-05: Adding Categories to Saaze
  14. 2022-04-09: Table of Contents in Saaze
  15. 2022-11-12: Line Length Distribution in Files
  16. 2023-03-25: Performance Comparison C vs. Java vs. Javascript vs. PHP vs. Python vs. Cobol vs. Dart
  17. 2023-04-22: Website Checking with Ahrefs
  18. 2023-10-02: Converting Journal Article from LaTeX to Markdown
  19. 2023-12-03: Converting Bachelor Thesis from LaTeX to Markdown
  20. 2024-08-25: Replacing SSHGuard with 20 Lines of Perl Code
  21. 2024-11-03: Hosting Static Content with pico.sh
  22. 2024-11-10: Reading Two Files Simultaneously With Perl
  23. 2024-12-31: Website Analytics

Python

  1. 2015-10-27: Working with Windows Junctions in Python

VBA

  1. 2016-05-23: Convert ASCII to Hex and vice versa in C and Excel VBA
  2. 2016-06-05: Exporting Exchange/Outlook GAL to vCard
  3. 2021-10-29: Saving Attachments in Outlook via VBA

WordPress

  1. 2008-01-02: Erster Eindruck von WordPress
  2. 2008-01-02: Hello world!
  3. 2013-01-06: Infrastructure Costs for WordPress
  4. 2013-05-21: The New Digital Company: Distributed, Online, and Transparent
  5. 2013-05-31: WordPress Statistics of this Blog: Top Views by Country
  6. 2013-06-04: WordPress March 2009 Wrap-Up
  7. 2013-06-21: WordPress Market Share 2011
  8. 2013-07-24: HipHop Virtual Machine can run WordPress
  9. 2013-08-13: WordPress.com by the Numbers: The July 2013 Hot List
  10. 2013-08-31: Using WordPress for 5 Years Now
  11. 2013-09-07: WordPress.com News and Numbers: The August 2013 Hot List
  12. 2013-09-22: WordPress/Automattic: Monthly Unique Visits and Employees
  13. 2013-09-23: dotScale 2013 MySQL Talk
  14. 2013-10-29: Statistics of this Blog: 1.000 Views, 60 Countries, 10 Likes
  15. 2013-10-30: Good, Fast, Cheap: You Can Only Pick Two!
  16. 2014-02-11: Statistics of this Blog: 2.600 Views, 78 Countries, 20 Comments
  17. 2014-05-07: Statistics of this Blog: Crossed 5.000 Views
  18. 2014-09-10: Statistics of this Blog: Crossed 10.000 Views
  19. 2014-10-24: WordPress/Automattic: Monthly Unique Visits and Employees, Part 2
  20. 2014-12-27: Statistics of this Blog: Crossed 15.000 Views
  21. 2014-12-30: 2014 in review - report generated by WordPress
  22. 2015-01-05: Migrating from delicious.com to WordPress
  23. 2015-02-13: WordPress.com News and Numbers: Year 2014 in Review
  24. 2015-04-18: Classical editor in WordPress.com
  25. 2015-04-23: Statistics of this Blog: Crossed 20.000 Views
  26. 2015-12-29: 2015 in review – report generated by WordPress
  27. 2016-01-24: Statistics of this Blog: Crossed 30.000 Views
  28. 2016-06-13: Considerations when converting from WordPress.com to Hugo
  29. 2016-11-12: Statistics of this Blog: Crossed 40.000 Views
  30. 2017-04-24: Converting WordPress Export File to Hugo
  31. 2017-05-18: Statistics of this Blog: Crossed 50.000 Views
  32. 2017-11-21: Statistics of this Blog: Crossed 60.000 Views
  33. 2018-07-15: Statistics of this Blog: Crossed 70.000 Views
  34. 2018-12-31: Statistics of this Blog: Crossed 80.000 Views
  35. 2019-03-27: WordPress.com down for a few minutes
  36. 2019-07-01: Statistics of this Blog: Crossed 90.000 Views
  37. 2020-02-12: Statistics of this Blog: Crossed 100.000 Views
  38. 2020-10-07: Statistics of this Blog: Crossed 110.000 Views
  39. 2021-05-18: Moved Blog To eklausmeier.goip.de
  40. 2021-06-21: WordPress.com Bulk Update

X11

  1. 2013-05-01: A Praise for IceWM
  2. 2014-04-26: Installing Ubuntu 14.04 Server Edition
  3. 2014-05-15: Patching Faulty EDID Information
  4. 2014-05-30: Installing Missing Debian Packages for Google Chrome
  5. 2016-10-04: Setting Keyboard-Language in IceWM
  6. 2025-08-13: Invalid MIT-MAGIC-COOKIE-1 key

astronomy

  1. 2013-04-27: Brian Koberlein on Google+: Astronomy Blog
  2. 2013-04-27: Max Planck Institut für Astrophysik: The Millennium Simulation Project
  3. 2013-06-16: Kepler’s Hypothesis explained by Brian Koberlein
  4. 2013-09-13: The Attraction of Curves – Brian Koberlein
  5. 2013-10-01: Photographs from Space by Karen L. Nyberg
  6. 2013-10-25: Why Brian Koberlein Is In The Dark Matter Camp
  7. 2013-12-03: Astronomy at Home – Brian Koberlein
  8. 2015-06-12: Photograph from Space
  9. 2015-07-26: International Space Station after undocking of STS-132
  10. 2015-10-21: Photographs from Apollo Mission to Moon
  11. 2017-01-12: Victoria Kaspi Public Lecture: The Cosmic Gift of Neutron Stars
  12. 2023-08-03: A Parsec-Scale Galactic 3D Dust Map out to 1.25 kpc from the Sun
  13. 2023-12-01: Our Neighborhood in the Milky Way in 3D
  14. 2024-10-08: On The Stability Of The Solar System

aviation

  1. 2014-02-16: [STORY] Lufthansa Airbus A380 Landing in San Francisco
  2. 2021-09-12: Air France Air Tracker
  3. 2022-05-08: Lufthansa Air Tracker

blogging

  1. 2013-08-21: Average Size of Web Pages plus Prediction
  2. 2020-05-25: Hosting Static Content with surge.sh
  3. 2020-05-26: Hosting Static Content with now.sh
  4. 2020-05-27: Hosting Static Content with netlify.app
  5. 2021-03-07: Lesser Known Static Site Generators
  6. 2021-05-18: Moved Blog To eklausmeier.goip.de
  7. 2021-05-23: Speed-Tests With Pingdom.com
  8. 2021-05-30: Generate RSS from Markdown
  9. 2021-06-13: Ampersands in Markdown URLs
  10. 2021-08-26: Bandwidth Diet for This Blog
  11. 2021-08-31: HTML Anchor Highlighting
  12. 2021-09-02: Considerations Regarding Simplifications of Saaze
  13. 2021-10-19: Making Static Site Generator 30-Times Faster
  14. 2021-10-31: Simplified Saaze
  15. 2021-11-12: Making Static Site Generator 500-Times Faster
  16. 2021-11-13: Performance Comparison Saaze vs. Hugo vs. Zola
  17. 2021-11-16: Accelerating Page Load Times by Reducing Requests
  18. 2022-01-11: Statistics of this Blog in 2021
  19. 2022-01-17: Generate RSS from HTML
  20. 2022-03-26: Accelerating Page Load Times by Reducing Requests, Part #2
  21. 2022-04-05: Adding Categories to Saaze
  22. 2022-04-09: Table of Contents in Saaze
  23. 2022-04-22: Galleries in Saaze
  24. 2022-04-23: Mindmaps in Saaze
  25. 2022-06-27: Example Theme for Simplified Saaze: J-Pilot
  26. 2022-07-09: Example Theme for Simplified Saaze: Koehntopp
  27. 2022-07-31: Hosting Static Content with Cloudflare
  28. 2022-08-04: Simplified Saaze now part of Jamstack listing
  29. 2022-08-22: Analysis of Website Performance
  30. 2022-09-05: Example Theme for Simplified Saaze: nukeKlaus
  31. 2022-09-18: Statistics of this Blog: Crossed 120.000 Views
  32. 2022-12-27: Analysis of Website Performance #2
  33. 2023-01-03: Installing Simplified Saaze on Windows 10
  34. 2023-01-21: Example Theme for Simplified Saaze: Mobility
  35. 2023-01-24: Analysis of Performance of Demo Open E-Mobility Site
  36. 2023-01-31: Installing Simplified Saaze on Windows 10 #2
  37. 2023-04-22: Website Checking with Ahrefs
  38. 2023-04-29: Embedding Content in Simplified Saaze
  39. 2023-05-19: Member of 512KB club
  40. 2023-05-31: Comparing Self-Hosting vs. Hashnode vs. Bearblog
  41. 2023-06-05: Example Theme for Simplified Saaze: Vonhoff
  42. 2023-06-23: Example Theme for Simplified Saaze: Paternoster
  43. 2023-06-27: Performance Remarks on PublicoMag Website
  44. 2023-07-05: Hosting Static Content with Neocities
  45. 2023-08-11: Blog Anniversary: 500 posts
  46. 2023-08-27: Mixing PHP into Markdown
  47. 2023-09-27: Example Theme for Simplified Saaze: Panorama
  48. 2023-09-28: Performance Comparison of Ristorante Panorama Website: WordPress vs. Simplified Saaze
  49. 2023-10-02: Converting Journal Article from LaTeX to Markdown
  50. 2023-10-23: Pagefind: Searching in Static Sites
  51. 2023-10-29: Simplified Saaze Monitored with PHPSPY
  52. 2023-12-03: Converting Bachelor Thesis from LaTeX to Markdown
  53. 2024-01-02: Example Theme for Simplified Saaze: Lemire
  54. 2024-01-14: Performance Comparison of Lemire Website: WordPress vs. Simplified Saaze
  55. 2024-01-20: Member of 250KB club
  56. 2024-02-11: Considerations on a Newsletter Program
  57. 2024-03-31: CSS Naked Day
  58. 2024-05-13: Example Theme for Simplified Saaze: Wendt
  59. 2024-05-14: Performance Comparison of Wendt Website: WordPress vs. Simplified Saaze
  60. 2024-05-16: Member of 1MB club
  61. 2024-07-14: Hosting Static Content with GitLab
  62. 2024-07-16: Hosting Static Content with GitHub
  63. 2024-08-14: Slashdot Effect on a Single Page
  64. 2024-10-13: Hosting Static Content with DigitalOcean
  65. 2024-10-30: Testing Static HTML Files with htmltest
  66. 2024-11-03: Hosting Static Content with pico.sh
  67. 2024-12-08: Converting Myra West's vlog to blog
  68. 2024-12-10: Example Theme for Simplified Saaze: Myra West
  69. 2024-12-15: Installing Simplified Saaze on Android
  70. 2025-08-25: Slides on Simplified Saaze
  71. 2024-05-19: Blogroll
  72. 2023-10-20: Privacy Policy

bugs

  1. 2013-08-31: Saving URLs in del.icio.us Still Troublesome
  2. 2014-01-17: Youtube 500 Internal Server Error
  3. 2014-05-15: Patching Faulty EDID Information
  4. 2014-06-19: Facebook Was Down on 19-Jun-2014
  5. 2014-08-08: Google Chrome Became a Performance Hog
  6. 2016-05-02: No YouTube Videos on Google Chrome v50
  7. 2017-05-11: Youtube 500 Internal Server Error
  8. 2019-03-27: WordPress.com down for a few minutes
  9. 2019-06-29: Google Chrome in Android Cannot Clear Cookies
  10. 2020-05-01: youtube-dl HTTP 403 error
  11. 2021-06-13: Ampersands in Markdown URLs
  12. 2021-06-27: Deletion Troublesome in Hashnode.com
  13. 2021-06-29: Brave Browser SIGSEGV Crash
  14. 2021-07-24: Hashnode Markdown Bulk Import Is Troublesome
  15. 2021-09-01: YouTube: Something Went Wrong
  16. 2022-06-14: eklausmeier.goip.de down
  17. 2022-07-30: npm error: must provide string spec
  18. 2022-08-07: Twitter: Infinite Loop on Logout
  19. 2022-11-06: Crashing J-Pilot
  20. 2023-05-15: Ahrefs: Infinite Loop on Login
  21. 2023-11-02: Cloudflare Dashboard Down
  22. 2024-05-29: IGYRC5108-U: IBM Cobol Compiler Terminating

classic

  1. 2021-01-23: Music from Max Bruch
  2. 2021-04-27: Music from Edward McDowell
  3. 2021-05-18: Music from Joachim Raff
  4. 2021-05-23: Music from Francis Poulenc
  5. 2021-08-07: Music played by Eliska Lenhartova
  6. 2021-08-08: Music from Rodrigo Riera
  7. 2021-08-09: Music played by Kristina Varlid
  8. 2021-10-16: Music from Heitor Villa-Lobos
  9. 2021-12-04: Music from Viktor Kosenko
  10. 2021-12-18: Music from Moritz Moszkowski
  11. 2022-02-05: Music from Alexander Scriabin
  12. 2022-02-20: Music from Camille Saint-Saens
  13. 2022-02-26: Music from Aram Khachaturian
  14. 2022-02-27: Music from Johannes Brahms
  15. 2022-04-10: Music from Anton Reicha
  16. 2022-07-23: Music from Felix Mendelssohn - orchestra
  17. 2022-07-24: Music from Felix Mendelssohn - duos, trios, quartets
  18. 2022-09-26: Music from Philip Glass
  19. 2022-11-05: Music from Domenico Scarlatti
  20. 2022-12-03: Music from Eduard Franck
  21. 2022-12-19: Music from Ferdinand Ries
  22. 2023-01-13: Music from Friedrich Kuhlau
  23. 2023-01-16: Music from Adolf Fredrik Lindblad
  24. 2023-02-26: Music from Norbert Burgmüller
  25. 2023-02-27: Music from Ignacy Feliks Dobrzynski
  26. 2023-03-04: Music from Wolfgang Amadeus Mozart
  27. 2023-03-26: Music from Henryk Wieniawski
  28. 2023-04-10: Music from Sergei Rachmaninoff
  29. 2023-04-14: Music played by Maria Zhirnykh
  30. 2023-04-17: Music played by Guitar Duo SoloDuo
  31. 2023-05-06: Music from Karol Lipinski
  32. 2023-05-13: Music from Reinhold Glier
  33. 2023-05-18: Music from Sergei Bortkiewicz
  34. 2023-07-10: Music from Antonin Dvorak
  35. 2023-08-10: Music from August Södermann
  36. 2024-01-12: Music from Ricardo Castro
  37. 2024-01-26: Cello Concerts
  38. 2024-03-04: Music from Henri Vieuxtemps
  39. 2024-04-16: Music from Franz Krommer
  40. 2024-04-19: Music from Mily Balakirev
  41. 2024-05-28: Music from César Franck
  42. 2024-09-29: Music from Viktor Novák
  43. 2024-10-02: Music from Henryk Pachulski
  44. 2024-10-03: Music from Georgy Sviridov
  45. 2025-06-12: Music from Ignaz Pleyel
  46. 2025-10-27: Music from Jan Dussek

college

  1. 2013-01-09: Dean Kamen at Bates College Commencement 2007
  2. 2013-11-02: Malcolm Gladwell: Don't go to Harvard, go to the Lousy Schools!
  3. 2015-07-12: Visiting GSI Helmholtz Centre in Darmstadt
  4. 2023-01-29: Price's Law
  5. 2025-03-31: Scanning Microfilm to PDF

cooling

  1. 2013-01-08: Computer Cooling
  2. 2013-09-06: Newer GPUGRID Tasks Keep GPU Really Hot
  3. 2015-07-23: PC overheating

database

  1. 2013-09-23: dotScale 2013 MySQL Talk
  2. 2019-01-11: Web Interface to Oracle Database
  3. 2019-01-19: java.sql.SQLRecoverableException: IO Error: Connection reset by peer, Authentication lapse
  4. 2019-08-02: Oracle Deadlock When Using Bitmap Index
  5. 2020-04-27: SQL Datamodel For J-Pilot
  6. 2022-10-09: Renumbering J-Pilot SQLite Data

economy

  1. 2013-09-06: China Built 600 Dams per Year Since 1950
  2. 2013-09-08: India is now the third largest Smartphone market in the world - Android Authority
  3. 2013-10-04: NASA Shutdown due to USA Government Shutdown
  4. 2013-11-27: How Academia Resembles a Drug Gang
  5. 2014-01-02: Effort Estimation Using Learning Curves
  6. 2014-06-28: 7-Day Week, 6-Day Week, 5-Day Week, Soviet Calendar
  7. 2023-01-29: Price's Law

gallery

  1. 2008-01-02: Blog Header Images
  2. 2011-05-06: Wolfsburg
  3. 2012-07-24: Porto
  4. 2012-07-27: Lisbon
  5. 2020-09-19: Lyon
  6. 2021-09-26: Montpellier
  7. 2022-05-21: Krakow
  8. 2023-07-02: Tiger Cat in a Box
  9. 2023-09-17: Montreal
  10. 2024-07-22: Idstein
  11. 2024-09-22: Toulouse
  12. 2024-12-25: Saint-Raphaël in France
  13. 2025-04-05: Chicago
  14. 2025-04-11: Austin
  15. 2025-04-14: San Antonio
  16. 2025-06-09: Bad Orb
  17. 2025-10-04: Paris

guitar

  1. 2021-08-07: Music played by Eliska Lenhartova
  2. 2021-08-08: Music from Rodrigo Riera
  3. 2021-08-09: Music played by Kristina Varlid
  4. 2021-08-18: Music played by Yelena Nikoghosyan
  5. 2021-09-26: Music from Agustin Barrios
  6. 2021-10-16: Music from Heitor Villa-Lobos
  7. 2022-05-03: Music from Mauro Giuliani
  8. 2022-06-18: Music from Paulo Bellinati
  9. 2022-07-19: Music played by Epta Experience
  10. 2022-09-06: Music played by Carlos Barbosa-Lima
  11. 2022-09-10: Music played by Duo Siqueira Lima
  12. 2022-09-26: Music from Philip Glass
  13. 2022-10-23: Music played by Nemanja Bogunovic
  14. 2022-11-20: Music from Antonio Cano and Jose Vinas
  15. 2023-01-09: Music from Roland Dyens
  16. 2023-01-22: Music from Jean-Philippe Rameau
  17. 2023-01-23: Music from Jorge Morel
  18. 2023-04-09: Music played by Trio Elogio
  19. 2023-04-14: Music played by Maria Zhirnykh
  20. 2023-04-17: Music played by Guitar Duo SoloDuo
  21. 2023-05-27: Music from Joaquin Rodrigo
  22. 2023-07-23: Music played by Guitar Duo Bensa-Cardinot
  23. 2023-08-06: Music from Mathias Duplessy
  24. 2023-11-09: Music from Astor Piazzolla
  25. 2023-12-23: Music from Enrique Granados
  26. 2024-02-12: Music from Anibal Troilo
  27. 2024-03-11: Music from Los Indios Tacunau
  28. 2024-03-16: Music from Julián Plaza
  29. 2024-07-28: Music played by Beijing Guitar Duo
  30. 2024-11-01: Music from Regino Sainz de la Maza
  31. 2025-01-14: Music played by Anton Baranov
  32. 2025-06-18: Music played by Gentil Montaña
  33. 2025-07-15: Music played by Juano Dominguez
  34. 2025-07-18: Music played by Roberto Grela

hardware

  1. 2013-09-11: Harddisk Drive Speed in MB/s
  2. 2013-09-23: dotScale 2013 MySQL Talk
  3. 2013-10-06: AMD Bulldozer CPU Architecture Overview
  4. 2013-12-08: Surfing the internet with 100 MBit/s
  5. 2013-12-09: Wikipedia Infrastructure as of 2013
  6. 2014-01-07: Plotting Power Consumption of my Desktop PC
  7. 2014-03-23: Enabling Power-Aware Applications on Linux Using Cyrogenic Module
  8. 2014-10-21: Review of the OnePlus One Smartphone
  9. 2014-12-28: Hard-Disk and USB Drive Speed Comparisons
  10. 2014-12-30: Three Free Invites For the OnePlus One
  11. 2015-01-22: Two Free Invites for the OnePlus One
  12. 2015-03-20: Two Free Invites for the OnePlus One, #2
  13. 2015-04-05: Two Free Invites for the OnePlus One, #3
  14. 2015-04-09: Two Free Invites for the OnePlus One, #4
  15. 2015-04-17: Four Free Invites for the OnePlus One, #5
  16. 2015-05-25: Hard-Disk and SSD Speed Comparisons
  17. 2015-07-23: PC overheating
  18. 2015-08-09: Output of lstopo from hwloc
  19. 2015-11-03: Small Scale Computing
  20. 2016-07-27: SSD Speed on Dell XPS 13 9350
  21. 2016-10-11: Interior of Dell XPS-13 and Acer Aspire
  22. 2016-10-26: Bluetooth Headphones in Arch Linux
  23. 2016-11-22: Operation Costs Measured in CPU Clock Cycles
  24. 2017-06-12: HP ePrint Obsolescense
  25. 2017-12-09: Filippo Mantovani: ARM for HPC
  26. 2018-02-06: Parallelization and CPU Cache Overflow
  27. 2020-07-07: ASRock DeskMini A300M with AMD Ryzen 3400G
  28. 2020-08-09: SSD Speed on Dell XPS 13 9350 with Samsung EVO 970 Plus
  29. 2022-04-26: Various Quotes from Kristian Köhntopp
  30. 2022-05-03: Upgrade AMD Bulldozer to Cezanne
  31. 2022-05-26: Upgrading OnePlus Five to Oppo Reno4
  32. 2022-08-06: Nima Badizadegan on Cloud Computing
  33. 2022-09-11: Electricity Measurement with Shelly 3EM
  34. 2023-06-30: Data Centers in Africa
  35. 2023-08-28: Crucial 4TB SSD in Asrock A300M
  36. 2023-10-30: David Heinemeier Hansson on Cloud Computing
  37. 2024-01-04: Aus allen Wolken gefallen: Cloud-Repatriierung, Rückzug aus der Cloud
  38. 2024-11-25: Upgrading Oppo Reno4 to Xiaomi 14T Pro
  39. 2025-07-19: ASRock DeskMini X300 with AMD Ryzen 5700G
  40. 2023-07-02: Uses

history

  1. 2014-11-24: Thank You Hungary
  2. 2015-03-22: Malcolm Gladwell on the importance of stubbornness

humor

  1. 2013-08-31: Mark Twain Commentary on the MacBook Air

mainframe

  1. 2013-06-09: Mainframe Rehosting: Cost Reduction, Hardware Sizing, Tools, and Methodology
  2. 2013-06-22: Memory Limitations with IBM Enterprise COBOL Compiler
  3. 2013-08-15: SyncSort Sort is Not Stable
  4. 2014-07-10: No Perl and PHP on Mainframe from IBM
  5. 2022-01-23: IMS/DC MFS To PHP
  6. 2022-11-13: Fixed Block Files

mathematics

  1. 2011-08-14: Mainframe Rehosting
  2. 2013-01-07: Number of Combinations for German Tax Id
  3. 2013-04-30: 0x5f3759df - calculating inverse square root
  4. 2013-06-01: Vasily Volkov (UC Berkeley): Unrolling parallel loops
  5. 2013-07-27: SUNDIALS (SUite of Nonlinear and DIfferential/ALgebraic equation Solvers)
  6. 2013-08-11: Design Notes on System for the Analysis of Order- and Stepsize Changes for Cyclic Composite Multistep Methods
  7. 2013-08-21: Average Size of Web Pages plus Prediction
  8. 2013-09-13: Torricelli's Trumpet: Infinite Surface Area but Finite Volume
  9. 2013-09-16: Line Integral of a Vector Field
  10. 2013-09-27: Gil Kalai on Zhang's Breakthrough in Number Theory
  11. 2013-09-30: Electronic Mathematical Journals
  12. 2014-01-02: Effort Estimation Using Learning Curves
  13. 2014-05-10: Simple Exercises for a C Programming Language Course
  14. 2014-07-16: Day 1, Workshop Programming of Heterogeneous Systems in Physics
  15. 2014-07-17: Day 2, Workshop Programming of Heterogeneous Systems in Physics
  16. 2015-02-07: Announcement: 11th International Conference on Parallel Programming and Applied Mathematics
  17. 2015-03-15: On Differential Forms
  18. 2015-06-13: Methods of Proof — Diagonalization
  19. 2016-10-08: Why does deep and cheap learning work so well?
  20. 2017-06-05: Five-Value Theorem of Nevanlinna
  21. 2017-11-30: Optimal Product Portfolio
  22. 2020-06-30: Reply to: Neural Network Back-Propagation Revisited with Ordinary Differential Equations
  23. 2020-10-15: Online Dial-A-Ride
  24. 2021-02-09: Poisson Log-Normal Distributed Random Numbers
  25. 2021-07-25: Diagonal of Squared Jacobian
  26. 2023-01-29: Price's Law
  27. 2023-06-06: Theorem of Stein and Rosenberg
  28. 2023-06-07: Neural Network Training using Stiff ODE Solvers
  29. 2023-07-01: Steve Jobs on Bicycles
  30. 2023-08-03: A Parsec-Scale Galactic 3D Dust Map out to 1.25 kpc from the Sun
  31. 2024-01-23: Matrixpolynome
  32. 2024-01-30: Das äußere Produkt und Determinanten
  33. 2024-01-31: Elementarsymmetrische Polynome
  34. 2024-02-03: Hermitesche, unitäre und normale Matrizen
  35. 2024-02-04: Die Spur einer Matrix
  36. 2024-02-05: Stetigkeit der Eigenwerte in Abhängigkeit der Matrixkomponenten
  37. 2024-02-06: Holomorphe Matrixfunktionen
  38. 2024-02-07: Differentiation von Matrizen und Determinanten
  39. 2024-02-08: Taylorformel für Vektorfunktionen
  40. 2024-02-09: Die Formel von Faà di Bruno
  41. 2024-02-10: Stabilität und Polynome
  42. 2024-06-09: Projektionsmatrix eines Raumes
  43. 2024-06-10: Lösung linearer Gleichungssysteme
  44. 2024-06-11: Konvergenzresultate für feste Schrittweiten
  45. 2024-06-17: Divergenz der Korrektoriteration: Theorie und Experimente
  46. 2024-06-18: Stabilitätsfunktionale und Semistabilitätsfunktionale
  47. 2024-07-01: Das Fehlerverhalten zusammengesetzer linearer Mehrschrittformeln
  48. 2024-08-13: Recursive Generation of Runge-Kutta Formulas
  49. 2024-09-03: Direct st-connectivity with few paths is in quantum logspace
  50. 2024-10-08: On The Stability Of The Solar System
  51. 2025-01-07: Praktische Gewinnung zyklischer, steif-stabiler Verfahren
  52. 2025-03-09: Stiffness in Neural Networks
  53. 2025-03-24: Die verwendeten zyklischen Formeln im Programm TENDLER
  54. 2025-04-03: A-Stability and Composite Multistep Methods
  55. 2025-04-04: A Stiffly Stable Integration Process Using Cyclic Composite Methods
  56. 2025-05-20: Computing Generalized Eigenvalues with LAPACK
  57. 2025-06-01: Stability Regions for BDF and Tendler's Formulas
  58. 2025-06-19: Stability Regions for Tischer's Formulas
  59. 2025-07-06: Stability Regions for Mihelčić's Formulas
  60. 2025-07-09: Stability Regions for Donelson and Hansen Formulas
  61. 2025-07-14: Stability Mountains for BDF1
  62. 2025-07-14: Stability Mountains for BDF2
  63. 2025-07-14: Stability Mountains for BDF3
  64. 2025-07-14: Stability Mountains for BDF4
  65. 2025-07-14: Stability Mountains for BDF5
  66. 2025-07-14: Stability Mountains for BDF6
  67. 2025-07-14: Stability Mountains for Donelson & Hansen 1-6
  68. 2025-07-14: Stability Mountains for Mihelčić's Formulas
  69. 2025-07-14: Stability Mountains for Tendler3
  70. 2025-07-14: Stability Mountains for Tendler4
  71. 2025-07-14: Stability Mountains for Tendler5
  72. 2025-07-14: Stability Mountains for Tendler6
  73. 2025-07-14: Stability Mountains for Tendler7
  74. 2025-07-14: Stability Mountains for Tischer3
  75. 2025-07-14: Stability Mountains for Tischer4
  76. 2025-07-14: Stability Mountains for Tischer5
  77. 2025-07-14: Stability Mountains for Tischer6
  78. 2025-07-14: Stability Mountains for Tischer7
  79. 2025-07-14: Stability Mountains for Tischer8
  80. 2025-10-06: Readings in Quantum Computing
  81. 2025-10-26: Weitere zyklische und blockimplizite lineare Mehrschritt-Verfahren
  82. 2025-10-28: Prädiktor-Korrektor-Verfahren und Verallgemeinerungen
  83. 2025-11-03: Erfahrungsmaterial mit bisherigen Lösern

network

  1. 2013-03-05: Fon and Deutsche Telekom Partner Together in Germany
  2. 2013-06-14: Cisco Cablemodem Signal to Noise Ratio
  3. 2013-06-15: Positive Erfahrungen mit Unitymedia
  4. 2013-08-25: Copy Directories with Symbolic Links via ssh
  5. 2013-10-03: Patrick Pichette on Google Fiber
  6. 2013-12-08: Surfing the internet with 100 MBit/s
  7. 2016-12-31: Cablesurf Channel Statistics
  8. 2017-04-14: Using Odroid as IP Router
  9. 2018-03-03: Towards web-based delta synchronization for cloud storage systems
  10. 2018-10-06: Blocking Network Attackers
  11. 2019-07-06: Updating IP Address in Dynu
  12. 2020-02-29: Aggressive Vodafone Router
  13. 2020-03-04: Surfing the internet with 1 GBit/s
  14. 2020-06-02: Automated Rebooting of Auerswald Communication System
  15. 2020-07-14: Blocking IP addresses with ipset
  16. 2021-01-16: Unitymedia und SIP VoIP
  17. 2021-02-21: ssh as SOCKS server
  18. 2021-02-28: Analysis And Usage of SSHGuard
  19. 2021-03-15: Add Disjoint IP Addresses To SSHGuard Blacklist
  20. 2021-06-05: Using NUC as WLAN Router
  21. 2022-06-14: eklausmeier.goip.de down
  22. 2022-06-16: Breaking Vodafone Router
  23. 2024-01-08: Vodafone Internet Outage
  24. 2024-08-25: Replacing SSHGuard with 20 Lines of Perl Code
  25. 2024-10-14: Vodafone Internet Outage #2
  26. 2025-07-04: Vodafone Internet Outage #3

orchestra

  1. 2021-01-23: Music from Max Bruch
  2. 2021-04-27: Music from Edward McDowell
  3. 2021-05-18: Music from Joachim Raff
  4. 2021-05-23: Music from Francis Poulenc
  5. 2022-07-23: Music from Felix Mendelssohn - orchestra

performance

  1. 2013-09-12: Dramatic Faster Sorting in Linux Using Nsort
  2. 2013-12-30: Performance of Dalvik versus native C compilation
  3. 2015-05-14: Speeding-Up Software Builds: Parallelizing Make and Compiler Cache
  4. 2016-02-03: Performance Comparison of mmap() versus read() versus fread()
  5. 2021-05-23: Speed-Tests With Pingdom.com
  6. 2021-07-13: Performance Comparison C vs. Java vs. Javascript vs. LuaJIT vs. PyPy vs. PHP vs. Python vs. Perl
  7. 2021-08-26: Bandwidth Diet for This Blog
  8. 2021-10-19: Making Static Site Generator 30-Times Faster
  9. 2021-11-12: Making Static Site Generator 500-Times Faster
  10. 2021-11-13: Performance Comparison Saaze vs. Hugo vs. Zola
  11. 2021-11-16: Accelerating Page Load Times by Reducing Requests
  12. 2022-03-26: Accelerating Page Load Times by Reducing Requests, Part #2
  13. 2022-07-11: Josep Stuhli On Scaling to 20 Million Users
  14. 2022-08-22: Analysis of Website Performance
  15. 2022-12-27: Analysis of Website Performance #2
  16. 2023-01-24: Analysis of Performance of Demo Open E-Mobility Site
  17. 2023-03-25: Performance Comparison C vs. Java vs. Javascript vs. PHP vs. Python vs. Cobol vs. Dart
  18. 2023-06-27: Performance Remarks on PublicoMag Website
  19. 2023-09-28: Performance Comparison of Ristorante Panorama Website: WordPress vs. Simplified Saaze
  20. 2024-01-14: Performance Comparison of Lemire Website: WordPress vs. Simplified Saaze
  21. 2024-05-14: Performance Comparison of Wendt Website: WordPress vs. Simplified Saaze

personal

  1. 2014-08-27: Turning 50 - Now What?
  2. 2015-05-27: Commuting to Work with an E-Bike
  3. 2017-01-01: Arnold Heinrich Klausmeier
  4. 2023-01-07: Harald Herminghaus
  5. 2024-06-04: Turning 60 - Now What?
  6. 2008-01-02: About

piano

  1. 2021-04-27: Music from Edward McDowell
  2. 2021-08-30: Music from Ernesto Nazareth
  3. 2022-02-06: Music from Mel Bonis
  4. 2022-07-25: Music from Felix Mendelssohn - piano
  5. 2022-10-03: Music from Robert Schumann
  6. 2023-02-25: Music from Louise Farrenc
  7. 2023-05-15: Music from Felix Blumenfeld
  8. 2023-05-18: Music from Sergei Bortkiewicz
  9. 2023-06-02: Music from Adolf von Henselt
  10. 2023-06-11: Music from Thomas Tellefsen
  11. 2023-07-02: Music from Charles-Valentin Alkan
  12. 2023-10-25: Music from Charles-Marie Widor
  13. 2024-03-25: Music played by Patil Zakarian
  14. 2024-07-08: Music played by Margarita Glebov
  15. 2024-10-22: Music from Ernesto Lecuona
  16. 2025-05-13: Music from Teresa Carreno
  17. 2025-08-01: Music from Agathe Backer Grondahl
  18. 2025-08-19: Music from Anton Arensky
  19. 2025-08-24: Music from Cecile Chaminade
  20. 2025-10-27: Music from Jan Dussek

pop

  1. 2021-08-18: Music played by Yelena Nikoghosyan
  2. 2023-07-17: Music from Alfredo Zitarrosa
  3. 2023-09-17: French Pop Music
  4. 2023-10-22: Music from Eduardo Falu

programming

  1. 2013-01-07: Number of Combinations for German Tax Id
  2. 2013-01-11: OpenGL Program: Earth with Moon Rotating around Sun
  3. 2013-04-21: Counting to Ten on Linux
  4. 2013-06-21: Generators are now in PHP 5.5
  5. 2013-06-29: GNU C: Extensions to the C Language Family
  6. 2013-06-29: Hash functions: An empirical comparison -- article by Peter Kankowski
  7. 2013-06-30: Hashing Just Random Numbers
  8. 2013-06-30: Very simple SHA1 test program written in C
  9. 2013-07-24: HipHop Virtual Machine can run WordPress
  10. 2013-08-15: SyncSort Sort is Not Stable
  11. 2013-09-12: Dramatic Faster Sorting in Linux Using Nsort
  12. 2013-09-18: Graphs with JpGraph by Asial
  13. 2013-09-21: Georg Hager's Blog: Intel vs. GCC for the OpenMP vector triad: Barrier shootout!
  14. 2013-10-13: JavaScript grid editor: I want to be Excel
  15. 2013-10-18: What Makes a Good Programming Environment?
  16. 2013-10-27: Programming in Excel VBA Compared To LibreOffice (OpenOffice) Calc
  17. 2013-10-30: Good, Fast, Cheap: You Can Only Pick Two!
  18. 2013-11-30: Working with System V IPC queues
  19. 2013-12-01: Output from deviceQuery for NVidia GTX 560
  20. 2013-12-12: Linux commands: expect and kibitz
  21. 2014-01-02: Effort Estimation Using Learning Curves
  22. 2014-01-10: Working with System V IPC queues in Perl and PHP
  23. 2014-01-13: Changing euid (effective user ID)
  24. 2014-02-09: Scheduling Cron Jobs on Business Days
  25. 2014-02-24: Calculating number of seats in parliament using d'Hondt's method
  26. 2014-05-01: Defeating Annoying Timeout in OpenShift SSH Access
  27. 2014-05-03: Announcement: Workshop Programming of Heterogeneous Systems in Physics, July 2014
  28. 2014-05-10: Simple Exercises for a C Programming Language Course
  29. 2014-05-15: Patching Faulty EDID Information
  30. 2014-07-05: Splitting Large Files on Microsoft Windows
  31. 2014-10-27: Effect of Optimizer in gcc on Intel/AMD and Power8
  32. 2015-02-07: Announcement: 11th International Conference on Parallel Programming and Applied Mathematics
  33. 2015-02-12: Downloading Binary Data, for example Boost C++ Library
  34. 2015-10-27: Working with Windows Junctions in Python
  35. 2016-02-03: Performance Comparison of mmap() versus read() versus fread()
  36. 2016-03-23: Slides on OpenMP by Christian Terboven & Dirk Schmidl
  37. 2016-04-05: Performance Comparison C vs. Lua vs. LuaJIT vs. Java
  38. 2016-05-23: Convert ASCII to Hex and vice versa in C and Excel VBA
  39. 2016-05-30: GCC 6.1 Compiler Optimization Level Benchmarks
  40. 2016-11-22: Operation Costs Measured in CPU Clock Cycles
  41. 2017-06-26: Text Analysis using Concordance
  42. 2017-07-17: C Pointer Surprises
  43. 2018-01-23: Hashing with Iterator in C
  44. 2018-01-30: Rewriting Perl to plain C
  45. 2018-02-06: Parallelization and CPU Cache Overflow
  46. 2018-02-22: Unix Command comm: Compare Two Files
  47. 2018-03-03: Towards web-based delta synchronization for cloud storage systems
  48. 2018-05-17: Using Scooter Software Beyond Compare
  49. 2018-07-22: Passing HashMap from Java to Java Nashorn
  50. 2019-01-19: java.sql.SQLRecoverableException: IO Error: Connection reset by peer, Authentication lapse
  51. 2020-05-05: Performance Comparison in Computing Exponential Function
  52. 2020-05-12: Installing Pallene Compiler
  53. 2020-05-14: Performance Comparison Pallene vs. Lua 5.1, 5.2, 5.3, 5.4 vs. C
  54. 2020-06-23: Calling C from Julia
  55. 2020-12-19: Compiling Java source to binary (native)
  56. 2021-02-01: Performance comparison Ryzen vs. Intel vs. Bulldozer vs. ARM
  57. 2021-03-29: PHP extension seg-faulting
  58. 2021-07-11: Calling MD4C from PHP via FFI
  59. 2021-07-13: Performance Comparison C vs. Java vs. Javascript vs. LuaJIT vs. PyPy vs. PHP vs. Python vs. Perl
  60. 2021-08-17: Generating JSON with COBOL
  61. 2021-08-19: Printing COBOL Section Names
  62. 2021-10-02: Parallel Mass-File Processing
  63. 2021-10-03: Compiling GnuCOBOL
  64. 2021-10-05: Comparing GnuCOBOL to IBM COBOL
  65. 2021-10-06: PECL's Yaml Way Faster Than Symfony's Yaml
  66. 2021-10-18: Profiling PHP Programs
  67. 2021-10-29: Saving Attachments in Outlook via VBA
  68. 2022-01-23: IMS/DC MFS To PHP
  69. 2022-02-07: Mass Lowercasing of File Names
  70. 2022-03-20: Testing COBOLworx gcc-cobol
  71. 2022-03-21: PHPMagazin On Simplified Saaze
  72. 2022-06-15: Decompressing ZIP Files on Mainframe
  73. 2022-11-12: Line Length Distribution in Files
  74. 2022-11-13: Fixed Block Files
  75. 2022-11-19: Introduction to Hashing
  76. 2023-02-12: Testing COBOLworx gcc-cobol #2
  77. 2023-03-25: Performance Comparison C vs. Java vs. Javascript vs. PHP vs. Python vs. Cobol vs. Dart
  78. 2023-07-09: Profiling PHP Programs #2
  79. 2023-11-14: Introduction to mle: Small Terminal Based Editor
  80. 2024-01-24: Lines of Code of various Open-Source Projects
  81. 2024-02-24: MD4C PHP Extension
  82. 2024-02-27: Parallelizing the Output of Simplified Saaze
  83. 2024-03-18: Is Binary Compiled with Frame Pointer Support?
  84. 2024-05-03: Converting UNIX Timestamps to Year, Month, Day in COBOL
  85. 2024-08-25: Replacing SSHGuard with 20 Lines of Perl Code
  86. 2025-05-20: Computing Generalized Eigenvalues with LAPACK
  87. 2025-05-25: Filtering Lines with Specific Length

security

  1. 2013-06-30: Very simple SHA1 test program written in C
  2. 2013-11-22: Reblog: Beware sexy honeybots spear phishing on social media
  3. 2014-01-15: Ignoring Security Certificate Errors in Google Chrome
  4. 2014-01-19: Cisco 2014 Annual Security Report: Java continues to be most vulnerable of all web exploits
  5. 2014-06-01: Setting-Up LUKS/dm-crypt for External USB-Drive
  6. 2014-07-07: Creating User Account With Empty Password on Linux
  7. 2014-09-14: On Password Security and Cracking
  8. 2014-11-09: Short Review on Film Citizenfour
  9. 2015-02-28: Using GnuPG for encryption and decryption
  10. 2015-10-05: Linux pam and /etc/shells
  11. 2018-04-17: Remote Unlocking of Encrypted Disks
  12. 2020-01-21: Chinese Hackers
  13. 2020-02-29: Aggressive Vodafone Router
  14. 2020-07-14: Blocking IP addresses with ipset
  15. 2021-02-21: ssh as SOCKS server
  16. 2021-02-28: Analysis And Usage of SSHGuard
  17. 2021-03-15: Add Disjoint IP Addresses To SSHGuard Blacklist
  18. 2024-03-05: Chinese Hackers #2
  19. 2024-08-25: Replacing SSHGuard with 20 Lines of Perl Code

sociology

  1. 2013-01-09: Dean Kamen at Bates College Commencement 2007
  2. 2013-07-19: Blend "Söhne und Weltmacht" and "Why Nations Fail"
  3. 2013-08-31: Mark Twain Commentary on the MacBook Air
  4. 2013-10-18: What Makes a Good Programming Environment?
  5. 2013-11-02: Malcolm Gladwell: Don't go to Harvard, go to the Lousy Schools!
  6. 2013-11-27: How Academia Resembles a Drug Gang
  7. 2014-06-28: 7-Day Week, 6-Day Week, 5-Day Week, Soviet Calendar
  8. 2015-03-03: Average daily commuting time in Europe and the U.S.
  9. 2015-03-22: Malcolm Gladwell on the importance of stubbornness
  10. 2015-03-28: Malcolm Gladwell on the financial crisis
  11. 2021-12-31: Internet Adoption
  12. 2023-01-29: Price's Law
  13. 2023-09-23: Malcolm Gladwell: Meritocracies don't work

statistics

  1. 2013-08-21: Average Size of Web Pages plus Prediction
  2. 2014-05-07: Statistics of this Blog: Crossed 5.000 Views
  3. 2014-09-10: Statistics of this Blog: Crossed 10.000 Views
  4. 2014-12-27: Statistics of this Blog: Crossed 15.000 Views
  5. 2014-12-30: 2014 in review - report generated by WordPress
  6. 2015-02-13: WordPress.com News and Numbers: Year 2014 in Review
  7. 2015-04-23: Statistics of this Blog: Crossed 20.000 Views
  8. 2016-01-24: Statistics of this Blog: Crossed 30.000 Views
  9. 2016-11-12: Statistics of this Blog: Crossed 40.000 Views
  10. 2017-05-18: Statistics of this Blog: Crossed 50.000 Views
  11. 2017-11-21: Statistics of this Blog: Crossed 60.000 Views
  12. 2018-07-15: Statistics of this Blog: Crossed 70.000 Views
  13. 2018-12-31: Statistics of this Blog: Crossed 80.000 Views
  14. 2019-07-01: Statistics of this Blog: Crossed 90.000 Views
  15. 2020-02-12: Statistics of this Blog: Crossed 100.000 Views
  16. 2020-10-07: Statistics of this Blog: Crossed 110.000 Views
  17. 2021-12-14: URL Count Statistics
  18. 2022-01-11: Statistics of this Blog in 2021
  19. 2022-09-18: Statistics of this Blog: Crossed 120.000 Views
  20. 2022-12-11: Twitter Boom
  21. 2024-12-31: Website Analytics

tax

  1. 2013-01-07: Number of Combinations for German Tax Id
  2. 2014-09-16: The Cost of Installing wine
  3. 2015-07-22: Lexware Financial Office Pro 2015 does not work with wine
  4. 2020-06-16: Gunnar Uldall's Tax Tariff

transportation

  1. 2014-09-20: Advances in Automotive Technology
  2. 2015-05-27: Commuting to Work with an E-Bike
  3. 2015-08-16: Urban planning
  4. 2017-04-05: Exceeding 10.000 km with E-Bike

uncategorized

  1. 2013-03-08: Download "Sent Mail" from Google Mail via POP3
  2. 2017-05-29: Embedded Documents in MS Word
  3. 2025-05-12: A treatment for "untreatable"

web-browsing

  1. 2013-10-20: Clearing Cookie Junk in Google Chrome Web Browser
  2. 2013-11-22: Reblog: Beware sexy honeybots spear phishing on social media
  3. 2014-01-15: Ignoring Security Certificate Errors in Google Chrome
  4. 2014-04-01: Youtube video to mp3
  5. 2014-05-01: Defeating Annoying Timeout in OpenShift SSH Access
  6. 2014-07-01: Microsoft Brought Down No-IP.org With Federal Court Order
  7. 2015-10-15: Suppressing Advertisement on Web-Pages a.k.a. Ad-Blocking
  8. 2017-04-19: Browsing Linux Kernel Source with Grokbit
  9. 2018-03-03: Towards web-based delta synchronization for cloud storage systems
  10. 2019-05-19: Showing History of Visits in Mozilla Firefox
  11. 2023-03-11: Simple Web-Clipboard
  12. 2023-03-14: Streaming Desktop with Audio to the Internet
  13. 2024-02-25: GitHub RSS Atom Feeds
  14. 2025-09-09: Clear Cache in Brave for Android

web-server

  1. 2013-12-09: Wikipedia Infrastructure as of 2013
  2. 2015-11-07: nginx: 413 Request Entity Too Large - File Upload Issue
  3. 2018-03-06: Set-Up Hiawatha Web-Server
  4. 2018-03-14: Set-Up "Let's Encrypt" for Hiawatha Web-Server
  5. 2021-05-22: Using GoAccess with Hiawatha Web-Server
  6. 2021-05-29: Configure Lighttpd With PHP and HTTPS
  7. 2021-06-03: Matomo with Hiawatha
  8. 2021-11-30: AWStats and Hiawatha
  9. 2021-12-13: Filtering Bots and Crawlers from Access.log
  10. 2021-12-14: URL Count Statistics
  11. 2022-01-04: HashOver Comment System with Hiawatha
  12. 2022-03-06: ReverseProxy and UrlToolkit in Hiawatha
  13. 2023-06-30: Data Centers in Africa
  14. 2023-08-13: Installing OpenLiteSpeed on Arch Linux
  15. 2023-08-29: From Hiawatha to NGINX
  16. 2023-08-30: Performance Comparison gzip vs Brotli
  17. 2024-02-19: Let's Encrypt Certbot Usage with NGINX
  18. 2024-04-13: Installing and Configuring the H2O Web-Server
  19. 2024-10-01: XHProf with NGINX
  20. 2024-12-31: Website Analytics
  21. 2025-07-20: PHP stuttering under load



Author: Elmar Klausmeier