{"id":98802,"date":"2020-12-25T02:42:12","date_gmt":"2020-12-25T00:42:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-yadre-versii-5-10-obnaruzhena-regressiya-proizvoditelnosti-btrfs"},"modified":"2020-12-25T02:42:12","modified_gmt":"2020-12-25T00:42:12","slug":"v-yadre-versii-5-10-obnaruzhena-regressiya-proizvoditelnosti-btrfs","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/v-yadre-versii-5-10-obnaruzhena-regressiya-proizvoditelnosti-btrfs","title":{"rendered":"V j\u00e1d\u0159e verze 5.10 byla zji\u0161t\u011bna regrese v\u00fdkonu BtrFS","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

U\u017eivatel Redditu nahl\u00e1sil zpomalen\u00ed vstupn\u011b-v\u00fdstupn\u00edch operac\u00ed na sv\u00e9 syst\u00e9m\u011b s btrfs po aktualizaci j\u00e1dra na verzi 5.10.<\/p>\n

\n

Na\u0161el jsem velmi jednoduch\u00fd zp\u016fsob, jak reprodukovat regresi, a to extrakc\u00ed obrovsk\u00e9ho tarballu, nap\u0159\u00edklad: tar xf firefox-84.0.source.tar.zst. Na m\u00e9m extern\u00edm USB3 SSD na Ryzen 5950x to trvalo m\u00edsto ~15s na j\u00e1d\u0159e 5.9 t\u00e9m\u011b\u0159 5 minut na 5.10! Abych vylou\u010dil fragmentaci souborov\u00e9ho syst\u00e9mu, testoval jsem tak\u00e9 zcela nov\u00fd, d\u0159\u00edve nepou\u017e\u00edvan\u00fd SSD PCIe 4.0 s kapacitou 1 TB, s podobnou, i kdy\u017e ne tak \u0161okuj\u00edc\u00ed regres\u00ed od 5.2s a\u017e do kolos\u00e1ln\u00edch ~34 sekund, co\u017e p\u0159edstavuje ~650% na 5.10 :-\\\/.<\/p>\n<\/blockquote>\n

<\/p>\n

Z\u0159ejm\u011b to souvis\u00ed s ned\u00e1vnou aktivitou<\/a> v ovlada\u010di btrfs.<\/p>\n

<\/noindex><\/noindex>
\n<\/p>\n

Zpr\u00e1va<\/a> o regresi na mailing listu linux-btrfs.<\/p>\n

<\/noindex><\/p>\n

Zdroj: linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u0440\u0435\u0434\u0434\u0438\u0442\u0430 \u0441\u043e\u043e\u0431\u0449\u0438\u043b \u043e \u0437\u0430\u043c\u0435\u0434\u043b\u0435\u043d\u0438\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0432\u0432\u043e\u0434\u0430-\u0432\u044b\u0432\u043e\u0434\u0430 \u043d\u0430 \u0435\u0433\u043e \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0441 btrfs, \u043f\u043e\u0441\u043b\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u044f\u0434\u0440\u0430 \u0434\u043e \u0432\u0435\u0440\u0441\u0438\u0438 5.10. \u042f \u043d\u0430\u0448\u0435\u043b \u043e\u0447\u0435\u043d\u044c \u043f\u0440\u043e\u0441\u0442\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431 \u0432\u043e\u0441\u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0441\u0442\u0438 \u0440\u0435\u0433\u0440\u0435\u0441\u0441\u0438\u044e, \u0430 \u0438\u043c\u0435\u043d\u043d\u043e \u0438\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u0435 \u043e\u0433\u0440\u043e\u043c\u043d\u043e\u0433\u043e \u0442\u0430\u0440\u0431\u043e\u043b\u0430, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440: tar xf firefox-84.0.source.tar.zst. \u041d\u0430 \u043c\u043e\u0435\u043c \u0432\u043d\u0435\u0448\u043d\u0435\u043c, USB3 SSD \u043d\u0430 Ryzen 5950x \u044d\u0442\u043e \u0437\u0430\u043d\u044f\u043b\u043e \u0432\u043c\u0435\u0441\u0442\u043e ~15s \u043d\u0430 \u044f\u0434\u0440\u0435 5.9, \u0434\u043e \u043f\u043e\u0447\u0442\u0438 5 \u043c\u0438\u043d\u0443\u0442 \u0432 5.10! 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