On So, 2022-07-10 at 10:36 -0700, Gordon Messmer wrote: > On 7/10/22 04:38, Vitaly Zaitsev via devel wrote: > > Have you rebuilt all system packages with -fno-omit-frame-pointer or > > just tested packages? > > > No. Early in the thread, Tomasz Torcz posted a link to a Phoronix > article as evidence that Fedora's performance was behind other > distributions. At one point, I expressed doubt that intel_pstate in > performance mode was the reason for some significant differences, so I > ran some tests to try to either prove or disprove that explanation. > Having done so, I don't think the results that Phoronix published are > useful as evidence of anything. it is well known(TM) that ceph performance suffers when not running with "performance" governor. see e.g. this blog (CTRL-F "powersave"): https://croit.io/blog/ceph-performance-test-and-optimization where IOPS are roughly quadrupled, when disabling the powersaving features. see also the holy bible of ceph performance tuning: https://yourcmc.ru/wiki/Ceph_performance#CPUs but the internet is full with benchmarks and real workload scenarios which show that the cpu performance governor has a real impact on highly concurrent workloads. this might not apply to workstations, but it indeed does apply to datacenter workloads, like SDS. -- Mit freundlichen Grüßen / Regards Sven Kieske Systementwickler / systems engineer Mittwald CM Service GmbH & Co. KG Königsberger Straße 4-6 32339 Espelkamp Tel.: 05772 / 293-900 Fax: 05772 / 293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer, Florian Jürgens St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen Informationen zur Datenverarbeitung im Rahmen unserer Geschäftstätigkeit gemäß Art. 13-14 DSGVO sind unter www.mittwald.de/ds abrufbar.
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