Software raid and hardware raid without BBU has a huge performace hit : https://ib-aid.com/en/articles/45-ways-to-speed-up-firebird-database/ https://ib-aid.com/en/articles/45-ways-to-speed-up-firebird-database/
EXT3, EXT4 : file system barrier property has huge performance hit https://www.firebirdnews.org/understanding-barrier-on-linux/ https://www.firebirdnews.org/understanding-barrier-on-linux/ https://www.firebirdnews.org/forced-writes-performance-impact-on-ubuntu/ https://www.firebirdnews.org/forced-writes-performance-impact-on-ubuntu/ Hyperthreading could harm performance : https://blogs.msdn.microsoft.com/slavao/2005/11/12/be-aware-to-hyper-or-not-to-hyper/ https://blogs.msdn.microsoft.com/slavao/2005/11/12/be-aware-to-hyper-or-not-to-hyper/
