{"id":183001,"date":"2026-08-15T10:53:29","date_gmt":"2026-08-15T08:53:29","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/v-systemd-journald-spustya-6-let-priznali-problemu-izbytochnoj-nagruzki-na-nakopiteli"},"modified":"2026-08-15T10:53:32","modified_gmt":"2026-08-15T08:53:32","slug":"systemd-journald-acknowledges-excessive-disk-load-problem-after-6-years","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/systemd-journald-acknowledges-excessive-disk-load-problem-after-6-years","title":{"rendered":"systemd-journald on tunnistas probleemi \u00fclekoormuse kohta salvestites p\u00e4rast 6 aastat","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Systemd projekti arendajad on alustanud pikaaegse arhitektuuriprobleemi uurimist ja k\u00f5rvaldamist komponendis \"systemd-journald\", mis p\u00f5hjustab andmete kirjutamise kordustaset (write amplification) v\u00f5rreldes tegeliku logimahtu mitmekordseks t\u00f5usmiseks. <\/p>\n

Lugu algab m\u00e4rtsist 2020, kui veaj\u00e4lgimisse s\u00fcsteemis registreeriti aruanne, milles n\u00e4idati, et umbes 500 KB tekstiliste logide genereerimine toob kaasa \u00fcle 700 MB f\u00fc\u00fcsilisi kirjutamisoperatsioone SSD-l. Systemd arendajad keeldusid toona kategooriliselt probleemi tunnustamisest, vastasid stiilis \"te ei m\u00f5ista, kuidas failis\u00fcsteemid t\u00f6\u00f6tavad\", keeldusid profileerimise l\u00e4biviimisest ja sulgesid p\u00e4ringu otsusega \"not actionable\". Arendajate kommentaarid kogusid sadu negatiivseid hinnanguid kasutajatelt, kuid projekti seisukoht j\u00e4i j\u00e4releandmatuks. <\/p>\n

2026. aasta alguses saadeti probleemist uus aruanne, mille arutelu k\u00e4igus viis s\u00f5ltumatu arendaja ValdikSS l\u00e4bi p\u00f5hjaliku profiilimisprotseduuri isoleeritud cgroupide ja loop-seadmete abil, t\u00f5estades selgelt probleemi tekkemehhanismi: m\u00e4lus kuvatud failide (mmap) ja binaarsete r\u00e4sitabelite t\u00f5ttu toob isegi \u00fche 750 baitise tekstis\u00f5numi kirjutamine kaasa m\u00e4lupiltide kuvamiste modifitseerimise, p\u00f5hjustades 4 KB lehtede kirjutamise ketasse ja genereerides 50 kuni 70 KB l\u00f5pp- \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430 blooki seadme tasemel. <\/p>\n

P\u00e4rast eilset probleemiaruande sattumist Hacker News'i esilehele ja vaieldamatute s\u00fcnteetiliste testide avaldamist muutsid projekti hooldajad retoorikat ning alustasid t\u00f6\u00f6de tegemist vahem\u00e4lu t\u00fchjendamise mehhanismide ja journald indeksite hoidmise struktuuri optimeerimise kallal.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 systemd \u043f\u0440\u0438\u0441\u0442\u0443\u043f\u0438\u043b\u0438 \u043a \u0438\u0437\u0443\u0447\u0435\u043d\u0438\u044e \u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e \u0434\u0430\u0432\u043d\u0435\u0439 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043d\u043e\u0439 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0432 \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u0435 «systemd-journald», \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0435\u0439 \u043a \u043c\u043d\u043e\u0433\u043e\u043a\u0440\u0430\u0442\u043d\u043e\u043c\u0443 \u0437\u0430\u0432\u044b\u0448\u0435\u043d\u0438\u044e \u043e\u0431\u044a\u0451\u043c\u0430 \u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u043c\u044b\u0445 \u043d\u0430 \u0434\u0438\u0441\u043a \u0434\u0430\u043d\u043d\u044b\u0445 (write amplification) \u043f\u043e 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