online since 1994 https://heikkisiltala.net/wiki/ 2026-09-09T18:37:06+00:00 https://heikkisiltala.net/wiki/ https://heikkisiltala.net/wiki/_media/wiki/logo.png text/html 2023-02-24T21:59:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/inside_sotkanet?rev=1677275965&do=diff Inside SOTKAnet This article was written in 2005. SOTKAnet indicator bank is a public accessible web information service that publishes detailed information on well-being and health in Finland. SOTKAnet was launched by STAKES, the National Research and Development Centre for Welfare and Health, on Monday 14th March 2005 at text/html 2023-09-22T21:31:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/one_disk_nas?rev=1695418296&do=diff Creating a small NAS server based on OpenMediaVault The initial version written 2020-07-15. Latest update 2020-08-01. See a separate page for long-term impressions. My goal was to create a small and simple network attached storage (NAS) server to serve as a file sharing server between devices connected to home network. The performance requirements for this system were low. I wanted to file storage to be encrypted. text/html 2023-02-22T22:37:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/dedicated_or_virtual_server?rev=1677105451&do=diff A dedicated server or a virtual server These are my notes on choosing between Hetzner's Dedicated Server EQ 4 and Virtual Private Server VQ 19. This was written in 2011 so this may not reflect the current similarities and differences between the two server types. text/html 2023-02-20T23:37:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/framework_comparison?rev=1676936233&do=diff Perl MVC frameworks: Catalyst, Dancer, Mojolicious Written in 2010. I used all the three Perl MVC frameworks (Catalyst, Dancer and Mojolicious) during this project. I started the project with Catalyst and implemented some of the core features and content pages with it. Then I started a side project to test Dancer framework. When the project started I found Mojolicious not to be mature enough for this system. But it developed a lot and later I decided to switch from Catalyst to Mojolicious. The… text/html 2023-02-26T05:16:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/seagate_external_hardrive_issues?rev=1677388611&do=diff Seagate Expansion Desktop performance issues and fixes Page created 2018-01-04. Last updated 2018-01-05. I had some issues with a brand new Seagate Expansion Desktop 4TB USB 3 hard drive (STEB4000200). Here are the issues and how they were fixed. Issue 1: Drive is extremely slow right from the beginning text/html 2023-10-25T15:51:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_ax_41_2020?rev=1698249104&do=diff Server benchmark 2020: Hetzner AX41 Dedicated Server 2020 * 2020 * AMD Ryzen 5 3600 Hexa-Core Simultaneous Multithreading * 64 GB DDR4 RAM * 2 x 2 TB SATA Enterprise HDD (software-RAID 1) * Connection 1 Gbit/s-Port * Guaranteed Bandwidth 1 GBit/s text/html 2023-10-25T16:21:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_ax_41_2023?rev=1698250892&do=diff Server benchmark 2023: Hetzner AX41 Dedicated Server * 2023 * AMD Ryzen 5 3600 Hexa-Core “Matisse” (Zen2) * 64 GB DDR4 RAM * The specification is 2 * 2 TB SATA 6 Gb/s Enterprise HDD; 7200 rpm (Software-RAID 1) * Delivered with 2 * 6 TB SATA 6 Gb/s Enterprise HDD text/html 2023-10-25T15:45:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_cx_21?rev=1698248747&do=diff Server benchmark 2019: Hetzner CX21 Cloud Server * 2019 * 2 vCPU * 4 GB RAM * 40 GB Local NVMe SSD * 20 TB Traffic * <https://www.hetzner.de/> * Debian 10.1 64 bit * Tests run 2019-09-22 Full test ======================================================================== BYTE UNIX Benchmarks (Version 5.1.3) System: *******: GNU/Linux OS: GNU/Linux -- 4.19.0-5-amd64 -- #1 SMP Debian 4.19.37-5+deb10u2 (2019-08-08) Machine: x86_64 (unknown) Language: en_US.utf8 (ch… text/html 2023-10-25T15:43:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_ex_41_ssd?rev=1698248627&do=diff Server benchmark 2018: Hetzner EX41-SSD Dedicated Server * 2018 * Intel® Core™ i7-7700 Quadcore Haswell incl. Hyper-Threading Technology * 32 GB RAM * Hard Drives 2 x 500 GB SSD (Software-RAID 1) * Backup Space 100 GB * <https://www.hetzner.de/> * Debian 9 64 bit text/html 2023-10-25T15:43:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_ex_42_nvme?rev=1698248616&do=diff Server benchmark 2019: Hetzner EX42-NVMe Dedicated Server * 2019 * Intel® Core™ i7-6700 Quad-Core incl. Hyper-Threading Technology * 64 GB DDR4 RAM * 2 x 512 GB NVMe SSD (software-RAID 1) * Connection 1 Gbit/s-Port * Guaranteed Bandwidth 1 GBit/s text/html 2023-02-22T22:37:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/cognos_bi?rev=1677105451&do=diff The automatic IBM Cognos BI Motto: Run your Business Intelligence, don't let your Business Intelligence run you! Written in 2013. I've been working with IBM Cognos BI (Business Intelligence) system for some years. Our application area for the BI system differs from typical application areas: we use it to provide public internet reporting and OLAP analysis tools. These are based on data extracted from our registers and other statistical data sources. text/html 2023-10-25T15:42:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_cpx_21_2020?rev=1698248555&do=diff Server benchmark 2020: Hetzner CPX21 Cloud Server * 2020 * 3 vCPU * 4 GB RAM * 80 GB Local NVMe SSD * 20 TB Traffic * 0.014 €/h * 8.56 €/mo * <https://www.hetzner.de/> * Debian 10.4 64 bit * Tests run 2020-05-27 Full test ======================================================================== BYTE UNIX Benchmarks (Version 5.1.3) System: ******: GNU/Linux OS: GNU/Linux -- 4.19.0-8-amd64 -- #1 SMP Debian 4.19.98-1+deb10u1 (2020-04-27) Machine: x86_64 (unknown)… text/html 2026-07-25T22:36:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/music/music_collection/d?rev=1785018968&do=diff Music: D A part of my music collection listing. Listing updated 2026-07-26. Music: C<<<<<< Music: E>>>>>> Artist Album Format Date Origin DGM Change Direction CD 18.8.2001 Veljekset Keskinen Tuuri DJ 2000 Häkkinen on ykkönen SD 1/2002 Anttila Asematunneli Helsinki DJ Bobo text/html 2023-02-24T21:55:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/catz/service_management?rev=1677275704&do=diff Catz service management Latest update 2022-07-16. This page contains short process descriptions, notes and checks for Catz application engine management and for version upgrades. This page is provided as public to show an example how a Perl- and Mojolicious-based application can be managed. This also gives me online access to the notes. text/html 2023-10-25T15:44:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_ex_40?rev=1698248656&do=diff Server benchmark 2014: Hetzner EX 40 Dedicated Server * 2014 * Intel® Core™ i7-4770 Quadcore Haswell incl. Hyper-Threading Technology * 32 GB DDR3 RAM * Hard Drives 2 x 2 TB SATA 6 Gb/s 7200 rpm (Software-RAID 1) Class Enterprise * Connection 1 Gbit/s-Port text/html 2023-10-25T15:44:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_ex_40_ssd?rev=1698248645&do=diff Server benchmark 2013: Hetzner EX 40 SSD Dedicated Server * 2013 * Intel® Core™ i7-4770 Quadcore Haswell incl. Hyper-Threading Technology * 32 GB DDR3 RAM * Hard Drives 2 x 240 GB SATA 6 Gb/s SSD (Software-RAID 1) * Connection 1 Gbit/s-Port text/html 2023-10-25T15:45:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_cax_21?rev=1698248719&do=diff Server benchmark 2023: Hetzner CAX21 Cloud Server * 2023 * 4 vCPU Ampere * 8 GB RAM * 80 GB * 20 TB Traffic * 8.05 €/mo * <https://www.hetzner.de/> * Debian 11 64 bit * Tests run 2023-04-29 Full test ======================================================================== BYTE UNIX Benchmarks (Version 5.1.3) System: *******: GNU/Linux OS: GNU/Linux -- 5.10.0-21-arm64 -- #1 SMP Debian 5.10.162-1 (2023-01-21) Machine: aarch64 (unknown) Language: en_US.utf8 (ch… text/html 2023-10-25T15:45:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_cpx_21_2023?rev=1698248729&do=diff Server benchmark 2023: Hetzner CPX21 Cloud Server 2023 * 2023 * 3 vCPU AMD * 4 GB RAM * 80 GB * 20 TB Traffic * 9.36 €/mo * <https://www.hetzner.de/> * Debian 11 64 bit * Tests run 2023-04-29 Full test ======================================================================== BYTE UNIX Benchmarks (Version 5.1.3) System: *******: GNU/Linux OS: GNU/Linux -- 5.10.0-21-amd64 -- #1 SMP Debian 5.10.162-1 (2023-01-21) Machine: x86_64 (unknown) Language: en_US.utf8 (c… text/html 2023-10-25T15:45:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_cx_11?rev=1698248739&do=diff Server benchmark 2023: Hetzner CX11 Cloud Server * 2023 * 1 vCPU Intel * 2 GB RAM * 20 GB * 20 TB Traffic * 4.70 €/mo * <https://www.hetzner.de/> * Debian 11 64 bit * Tests run 2023-04-29 Full test ======================================================================== BYTE UNIX Benchmarks (Version 5.1.3) System: *******: GNU/Linux OS: GNU/Linux -- 5.10.0-21-amd64 -- #1 SMP Debian 5.10.162-1 (2023-01-21) Machine: x86_64 (unknown) Language: en_US.utf8 (charm… text/html 2023-10-25T15:44:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_eq_4?rev=1698248682&do=diff Server benchmark 2011: Hetzner EQ 4 Dedicated Server * 2011 * Hetzner EQ 4 Dedicated Server * i7-920 Quadcore * 8 GB RAM * 750 GB HD RAID1 * 100 GB backup space * 10 TB traffic/mo * <https://www.hetzner.de/> * Debian 6.0 64 bit * Tests run 2011-07-26 UnixBench 5.1.2 ./Run dhry2reg whetstone-double syscall pipe context1 spawn execl shell1 shell8 shell16 ======================================================================== BYTE UNIX Benchmarks (Version 5.1.2) Syst… text/html 2023-10-25T15:44:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_ex_4?rev=1698248669&do=diff Server benchmark 2011: Hetzner EX 4 Dedicated Server * 2011 * Hetzner EQ 4 Dedicated Server * i7-2600 Quadcore * 16 GB RAM * 3 TB SATA 6 Gb/s HDD RAID1 * 100 GB backup space * 10 TB traffic/mo * <https://www.hetzner.de/> * Debian 6.0 64 bit * Tests run 2011-10-04 text/html 2023-10-25T15:43:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_vq_12_vps?rev=1698248606&do=diff Server benchmark 2012: Hetzner VQ 12 VPS * 2012 * Hetzner VQ 12 VPS * Single Core * 1 GB RAM * 40 GB HD on some sort of RAID * no backup space * 2 TB traffic/mo * <https://www.hetzner.de/> * Debian 6.0 64 bit * Tests run 2012-01-31 UnixBench 5.1.2 ./Run dhry2reg whetstone-double syscall pipe context1 spawn execl shell1 shell8 shell16 ======================================================================== BYTE UNIX Benchmarks (Version 5.1.2) System: ********: GNU/L… text/html 2023-10-25T15:42:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/hetzner_vq_19_vps?rev=1698248538&do=diff Server benchmark 2011: Hetzner VQ 19 VPS * 2011 * Hetzner VQ 19 VPS * Single Core * 2 GB RAM * 80 GB HD on some sort of RAID * no backup space * 4 TB traffic/mo * <https://www.hetzner.de/> * Debian 6.0 64 bit * Tests run 2011-07-26 UnixBench 5.1.2 ./Run dhry2reg whetstone-double syscall pipe context1 spawn execl shell1 shell8 shell16 ======================================================================== BYTE UNIX Benchmarks (Version 5.1.2) System: Debian-60-squee… text/html 2023-10-25T15:42:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/server_benchmarks/xencon_xpro_512_vps?rev=1698248520&do=diff Server benchmark 2011: Xencon x|pro 512 VPS * 2011 * Xencon x|pro 512 VPS * Dual CPU * 0.5 GB RAM * 40 GB HD (RAID 1/RAID 10) * with automated backups * 0.5 TB traffic/mo * <https://www.xencon.net/> * Debian 6.0 64 bit * Tests run 2011-07-26 UnixBench 5.1.2 ./Run dhry2reg whetstone-double syscall pipe context1 spawn execl shell1 shell8 shell16 ======================================================================== BYTE UNIX Benchmarks (Version 5.1.2) System: catz:… text/html 2023-02-23T23:24:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/photography/camera_bodies/the_future_of_dslr_bodies?rev=1677194660&do=diff The future of DSLR bodies This article was written in 2008. In my opinnion the DSLR bodies have been designed very conservatively. There is really not much new and innovative in them. The marketing hype just exaggerates all the minimal improvements. What are the features I would like to see on future DSLR bodies? text/html 2023-10-11T17:51:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/mixing_static_and_dynamic?rev=1697046717&do=diff Building a website mixing static and dynamic techniques An ongoing writing process. Started 2021-07-12. Latest update 2023-10-11. From where do we start I'm a content creator, maintainer, developer and webmaster of a few websites purely as a hobby. text/html 2023-02-20T23:37:13+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/postgresql_vs_sqlite?rev=1676936233&do=diff PostgreSQL vs SQLite Written in 2011. If you need a very fast relational database for a limited amount of data (up to some gigabytes) and don't need scalability on concurrent writes then SQLite is for you. It is a cleverly designed ultra-lightweight ACID compliant relational database that requires no administration. text/html 2023-10-11T17:13:25+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/the_nas_power_consumption?rev=1697044405&do=diff The small NAS server: about power consumption The measurements were made and the writing started 2023-09-23. Writing completed 2023-10-11. Why measure the power consumption As power consumption of ICT equipment and power consumption in general have became popular subjects I decided to measure the power consumption of text/html 2023-02-22T22:37:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/music/akai_mpc_live_effects?rev=1677105451&do=diff A quick dive into the effects of Akai MPC Live Created 2017-10-22 while my website celebrates its 23th anniversary. If you wonder what Akai MPC live is then check this review. You can use four effects at a time as insert effects. You can also set master effects to effect all the tracks in the mix. Effects can also be used when sampling, if you prefer. text/html 2023-02-26T17:32:10+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/information_technology/catz/system_description?rev=1677432730&do=diff About the design and implementation of Catz Written in 2011 so may contain outdated information. The key attributes * The service is stateless: the HTTP GET request's URL identifies the resource requested. There are no cookies nor sessions. * The public access is dynamic but read only. All data is loaded offline by a loader sumsystem. text/html 2026-07-25T22:36:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/music/music_collection/h?rev=1785018968&do=diff Music: H A part of my music collection listing. Listing updated 2026-07-26. Music: G<<<<<< Music: I>>>>>> Artist Album Format Date Origin H.E.A.T Tearing Down The Walls CD 2017 EMP webstore Halcyon Way Bloody but unbowed CD 22.9.2021 EMP webstore Halford Resurrection CD text/html 2026-07-25T22:36:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/music/music_collection/helloween?rev=1785018968&do=diff Helloween A part of my music collection listing. Listing updated 2026-07-26. An artist page is available for artists having at least 5 items in the collection. Artist Album Format Date Origin Helloween 7 Sinners CD 6/2012 Veljekset Keskinen Tuuri Helloween Better Than Raw text/html 2026-07-25T22:36:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/music/music_collection/m?rev=1785018968&do=diff Music: M A part of my music collection listing. Listing updated 2026-07-26. Music: L<<<<<< Music: N>>>>>> Artist Album Format Date Origin Mac Bueno & Tatc Snadisti nollegee CD gift Machine Men Circus of Fools CD 19.9.2025 Levykauppa Äx Machine Men Elegies CD 10/2007 text/html 2026-07-25T22:36:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/music/music_collection/o?rev=1785018968&do=diff Music: O A part of my music collection listing. Listing updated 2026-07-26. Music: N<<<<<< Music: P>>>>>> Artist Album Format Date Origin Oceans Of Slumber Oceans Of Slumber CD 22.9.2021 EMP webstore Octavia Sperati Grace submerged CD 14.1.2025 Levykauppa Äx Offspring text/html 2026-07-25T22:36:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/music/music_collection/r?rev=1785018968&do=diff Music: R A part of my music collection listing. Listing updated 2026-07-26. Music: Q<<<<<< Music: S>>>>>> Artist Album Format Date Origin Rage End Of All Days CD 11/2001 Black and White Hakaniemi Helsinki Rage Execution Quaranteed CD Veljekset Keskinen Tuuri Rage Reign of Fear text/html 2026-07-25T22:36:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/music/music_collection/royal_hunt?rev=1785018968&do=diff Royal Hunt A part of my music collection listing. Listing updated 2026-07-26. An artist page is available for artists having at least 5 items in the collection. Artist Album Format Date Origin Royal Hunt Devil's Dozen CD 2017 EMP webstore Royal Hunt Eyewitness text/html 2026-07-25T22:36:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/music/music_collection/s?rev=1785018968&do=diff Music: S A part of my music collection listing. Listing updated 2026-07-26. Music: R<<<<<< Music: T>>>>>> Artist Album Format Date Origin S.I.B. vs The Tokens Feat. Jay Siegel The Lion Sleeps Tonight SD 1/2002 Anttila Asematunneli Helsinki Sabaton Carolus Rex CD 8/2012 Veljekset Keskinen Tuuri text/html 2026-07-25T22:36:08+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/music/music_collection/w?rev=1785018968&do=diff Music: W A part of my music collection listing. Listing updated 2026-07-26. Music: V<<<<<< Music: X>>>>>> Artist Album Format Date Origin WASP Helldorado CD 2000 Veljekset Keskinen Tuuri WASP Last Command CD 6.7.2026 Levykauppa Äx WASP The Last Command MCR WASP WASP MCR 28.1.1984 text/html 2023-02-22T22:33:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/photography/camera_bodies/canon_eos_40d?rev=1677105210&do=diff Canon EOS 40D Review created 2007, latest update 2009. catza.net photos: Canon EOS 40D Canon EOS 40D was my primary camera body from October 2007 to October 2009. It was a very good camera for my use. Changing from Canon 20D to 40D was partially an accident. I had a friend who needed a camera body at the same time when I was thinking whether to go with 20D for a year or so or to start looking for an upgrade. When the possiblity opened I decided to sell the 20D and then needed a replacement. T… text/html 2023-02-22T22:37:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://heikkisiltala.net/wiki/en/photography/compact_cameras/nytech_nd_4020?rev=1677105451&do=diff Nytech ND-4020 This review and in-depth description was created 2004 - 2007. The latest update was done in July 2015. See for more details. See some photos shot with Nytech ND-4020! Nytech ND-4020 was my first digital camera. I purchased it June 2004 and used it very actively for three months. During that time I shot about 5 000 photos with it. The enthusiasm of photography spread like a fire and so the camera got replaced with