{"id":167524,"date":"2026-04-04T23:11:54","date_gmt":"2026-04-04T21:11:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-yadre-linux-7-0-vyyavili-regressiyu-v-dva-raza-snizhayushhuyu-proizvoditelnost-postgresql"},"modified":"2026-04-04T23:11:54","modified_gmt":"2026-04-04T21:11:54","slug":"v-yadre-linux-7-0-vyyavili-regressiyu-v-dva-raza-snizhayushhuyu-proizvoditelnost-postgresql","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/v-yadre-linux-7-0-vyyavili-regressiyu-v-dva-raza-snizhayushhuyu-proizvoditelnost-postgresql","title":{"rendered":"W j\u0105drze Linux 7.0 wykryto regresj\u0119, kt\u00f3ra dwukrotnie obni\u017ca wydajno\u015b\u0107 PostgreSQL","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

In\u017cynier z firmy Amazon odkry\u0142 regresj\u0119 specyficzn\u0105 dla j\u0105dra Linux 7.0, kt\u00f3rego wydanie planowane jest na 13 kwietnia. Zmiana ustawie\u0144 planisty zada\u0144 spowodowa\u0142a znaczne obni\u017cenie przepustowo\u015bci i responsywno\u015bci podczas pracy z baz\u0105 danych PostgreSQL na systemach z architektur\u0105 ARM64. Przy u\u017cyciu j\u0105dra 7.0 wyniki wydajno\u015bci w te\u015bcie pgbench \u00absimple-update\u00bb spad\u0142y prawie dwukrotnie \u2014 z 98565 do 50751. <\/p>\n

Spowolnienie jest spowodowane zmian\u0105 trybu preempcji w domy\u015blnym planerze z PREEMPT_NONE na PREEMPT_LAZY na architekturach obs\u0142uguj\u0105cych ten tryb, co sprawi\u0142o, \u017ce w u\u017cytkowym przestrzeni PostgreSQL zacz\u0119\u0142o sp\u0119dza\u0107 55% czasu CPU na wywo\u0142aniu s_lock(). Aby rozwi\u0105za\u0107 problem, zaproponowano powr\u00f3t do domy\u015blnego trybu PREEMPT_NONE i usuni\u0119cie jego zwi\u0105zku z ustawieniem ARCH_NO_PREEMPT. <\/p>\n

Peter Zijlstra, autor zmian, kt\u00f3re spowodowa\u0142y regresj\u0119, oraz maintainer planisty zada\u0144 i zwi\u0105zanych z blokadami subsystem\u00f3w j\u0105dra, stwierdzi\u0142, \u017ce poprawki nale\u017cy wprowadzi\u0107 w kodzie PostgreSQL. Aby rozwi\u0105za\u0107 problem spadku wydajno\u015bci, zaleci\u0142 u\u017cycie w PostgreSQL niedawno dodanego do j\u0105dra rozszerzenia \u00abrseq slice\u00bb (Restartable Sequences), aby ograniczy\u0107 prawdopodobie\u0144stwo wymuszenia blokuj\u0105cego. <\/p>\n

Na razie nie wiadomo, jakie rozwi\u0105zanie przyjmie Linus Torvalds, kt\u00f3ry przestrzega zasady, \u017ce j\u0105dro nie powinno pogarsza\u0107 wydajno\u015bci i \u0142ama\u0107 zgodno\u015bci z przestrzeni\u0105 u\u017cytkownika. Z jednej strony j\u0105dro 7.0 znajduje si\u0119 na ostatnim etapie test\u00f3w przed wydaniem i przywr\u00f3cenie ustawie\u0144 planera mo\u017ce prowadzi\u0107 do innych regresji, z drugiej strony u\u017cytkownicy mog\u0105 napotka\u0107 dwukrotny spadek wydajno\u015bci jednej z najpopularniejszych baz danych.
\n
\u0179r\u00f3d\u0142o: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u043d\u0436\u0435\u043d\u0435\u0440 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Amazon \u0432\u044b\u044f\u0432\u0438\u043b \u0440\u0435\u0433\u0440\u0435\u0441\u0441\u0438\u044e, \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u0447\u043d\u0443\u044e \u0434\u043b\u044f \u044f\u0434\u0440\u0430 Linux 7.0, \u0440\u0435\u043b\u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043e\u0436\u0438\u0434\u0430\u0435\u0442\u0441\u044f 13 \u0430\u043f\u0440\u0435\u043b\u044f. \u0418\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u043d\u0430\u0441\u0442\u0440\u043e\u0435\u043a \u043f\u043b\u0430\u043d\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0437\u0430\u0434\u0430\u0447 \u043f\u0440\u0438\u0432\u0435\u043b\u043e \u043a \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u043c\u0443 \u0441\u043d\u0438\u0436\u0435\u043d\u0438\u044e \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u043d\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u043e\u0441\u0442\u0438 \u0438 \u043e\u0442\u0437\u044b\u0432\u0447\u0438\u0432\u043e\u0441\u0442\u0438 \u043f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0421\u0423\u0411\u0414 PostgreSQL \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043e\u0439 ARM64. \u041f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u044f\u0434\u0440\u0430 7.0 \u043f\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0438 \u043f\u0440\u043e\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u0438 \u0442\u0435\u0441\u0442\u0430 pgbench «simple-update» \u0441\u043d\u0438\u0437\u0438\u043b\u0438\u0441\u044c \u043f\u043e\u0447\u0442\u0438 \u0432 \u0434\u0432\u0430 \u0440\u0430\u0437\u0430 — \u0441 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-167524","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47W j\u0105dra Linux 7.0 zidentyfikowano regresj\u0119, kt\u00f3ra dwukrotnie obni\u017ca wydajno\u015b\u0107 PostgreSQL | ProHoster","description":"In\u017cynier z firmy Amazon zidentyfikowa\u0142 regresj\u0119 specyficzn\u0105 dla j\u0105dra Linux 7.0, kt\u00f3rego wydanie przewidziano na 13 kwietnia.","canonical_url":"https:\/\/prohoster.info\/pl\/blog\/news\/v-yadre-linux-7-0-vyyavili-regressiyu-v-dva-raza-snizhayushhuyu-proizvoditelnost-postgresql","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"pl_PL","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412 \u044f\u0434\u0440\u0435 Linux 7.0 \u0432\u044b\u044f\u0432\u0438\u043b\u0438 \u0440\u0435\u0433\u0440\u0435\u0441\u0441\u0438\u044e, \u0432 \u0434\u0432\u0430 \u0440\u0430\u0437\u0430 \u0441\u043d\u0438\u0436\u0430\u044e\u0449\u0443\u044e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c PostgreSQL | ProHoster","og:description":"\u0418\u043d\u0436\u0435\u043d\u0435\u0440 \u0438\u0437 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438 Amazon \u0432\u044b\u044f\u0432\u0438\u043b \u0440\u0435\u0433\u0440\u0435\u0441\u0441\u0438\u044e, \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u0447\u043d\u0443\u044e \u0434\u043b\u044f \u044f\u0434\u0440\u0430 Linux 7.0, \u0440\u0435\u043b\u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043e\u0436\u0438\u0434\u0430\u0435\u0442\u0441\u044f 13 \u0430\u043f\u0440\u0435\u043b\u044f.","og:url":"https:\/\/prohoster.info\/pl\/blog\/news\/v-yadre-linux-7-0-vyyavili-regressiyu-v-dva-raza-snizhayushhuyu-proizvoditelnost-postgresql","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-04-04T21:11:54+00:00","article:modified_time":"2026-04-04T21:11:54+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/posts\/167524","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/comments?post=167524"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/posts\/167524\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/media?parent=167524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/categories?post=167524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/pl\/wp-json\/wp\/v2\/tags?post=167524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}