{"id":168709,"date":"2026-04-14T17:12:49","date_gmt":"2026-04-14T15:12:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/dostupna-biblioteka-upravleniya-pamyatyu-jemalloc-5-3-1"},"modified":"2026-04-14T17:12:49","modified_gmt":"2026-04-14T15:12:49","slug":"dostupna-biblioteka-upravleniya-pamyatyu-jemalloc-5-3-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/dostupna-biblioteka-upravleniya-pamyatyu-jemalloc-5-3-1","title":{"rendered":"Saadaval on m\u00e4lu haldamise teek jemalloc 5.3.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Neli aastat p\u00e4rast eelmise versiooni v\u00e4ljaandmist on saadaval m\u00e4luhaldusraamatukogu jemalloc 5.3.1, mis pakub alternatiivset malloc-funktsioonide rakendust, optimeeritud fragmenteerimise v\u00e4hendamiseks ja mitmepoolsete s\u00fcsteemide jaoks. Jemallocis kasutatakse iga CPU tuuma jaoks oma isoleeritud m\u00e4lujaotuse ala, et lahendada lukustamisprobleeme multituumsetes s\u00fcsteemides, saavutades lineaarse skaleeritavuse koos teede arvu kasvuga.     <\/p>\n<p>Juuni 2025. aastal l\u00f5petas projekti autor hooldamise ja arhiivis\u00fcsteemi viidud jemalloci hoidla, kuid kuu aega tagasi j\u00e4tkas arendust ettev\u00f5te Meta, kes kasutab jemalloci oma infrastruktuuris. Raamatukogu loodi algselt FreeBSD jaoks ja see on alates 2005. aastast vaikimisi selles ops\u00fcsteemis kasutusel. Raamatukogu kood on kirjutatud C keeles ja jagatakse BSD litsentsi alusel.      <\/p>\n<p>Muudatuste seas:  <\/p>\n<ul>\n<li class=\"l\"> Rakendatud on funktsioon pvalloc, mis v\u00f5ib osutuda kasulikuks libc m\u00e4luhalduri asendamisel.\n<li class=\"l\"> Silumisversioonides on lubatud re\u017eiim, mis tuvastab funktsiooni free() topeltkutsumise. Staki suuruse seadmiseks, mille raames toimub skaneerimine, on lisatud parameeter debug_double_free_max_scan.\n<li class=\"l\"> Lisatud koostamisv\u00f5imalus &#171;&#8212;enable-pageid&#187; m\u00e4lukaardistamise t\u00e4histe seadmiseks, kasutades prctl'i PR_SET_VMA lipuga. P\u00e4rast aktiveerimist on kaardistamine j\u00e4lgitav l\u00e4bi \/proc\/&lt;pid&gt;\/maps.\n<li class=\"l\"> Lisatud parameeter &#171;prof_bt_max&#187;, mis v\u00f5imaldab seadistada maksimaalset steki s\u00fcgavust profileerimiseks.\n<li class=\"l\"> Lisatud koostamisv\u00f5imalus &#171;&#8212;enable-force-getenv&#187; tavalise getenv() funktsiooni kasutamiseks varjatud secure_getenv() asemel.\n<li class=\"l\"> Lisatud koostamisv\u00f5imalus &#171;&#8212;disable-dss&#187; sbrk() funktsiooni kasutamise keelamiseks.\n<li class=\"l\"> Lisatud parameeter &#171;tcache_ncached_max&#187; voogude vahem\u00e4lu elementide arvu piiramise jaoks.\n<li class=\"l\"> Lisatud parameeter &#171;calloc_madvise_threshold&#187; kernel'i madvise mehhanismi v\u00f5i memset funktsiooni kasutamise seadistamiseks calloc funktsiooni kaudu eraldatud m\u00e4lu nullimiseks.\n<li class=\"l\"> Lisatud koostamisv\u00f5imalus &#171;&#8212;disable-user-config&#187; seadete laadimise keelamiseks failist \/etc\/malloc.conf v\u00f5i keskkonnamuutujast MALLOC_CONF.\n<li class=\"l\"> Lisatud parameeter &#171;process_madvise_max_batch&#187; m\u00e4luplokkide arvu piiramiseks iga madvise partiioperatsiooni jaoks.\n<li class=\"l\"> Lisatud parameeter &#171;disable_large_size_classes&#187; uue algoritmi keelamiseks, mis arvutab eraldatava m\u00e4lu suurust ja v\u00e4hendab \u00fcle 4 lehek\u00fclje suuruste plokkide eraldamise kulusid.\n<li class=\"l\"> T\u00f6\u00f6riista mallctl on lisatud valikud: opt.prof_bt_max, arena.<i>.name, thread.tcache.max, thread.tcache.ncached_max.write, thread.tcache.ncached_max.read_sizeclass, arenas.hugepage ja approximate_stats.active.      <\/ul>\n<p>Allikas: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65201\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043f\u0443\u0441\u0442\u044f 4 \u0433\u043e\u0434\u0430 \u043f\u043e\u0441\u043b\u0435 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0448\u043b\u043e\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u044c\u044e jemalloc 5.3.1, \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0449\u0435\u0439 \u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u043d\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u0439 malloc, \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0443\u044e \u0434\u043b\u044f \u0441\u043d\u0438\u0436\u0435\u043d\u0438\u044f \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u0438 \u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u043d\u0430 \u043c\u043d\u043e\u0433\u043e\u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445. \u0414\u043b\u044f \u0440\u0435\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043a\u0430\u043c\u0438 \u043d\u0430 \u043c\u043d\u043e\u0433\u043e\u044f\u0434\u0435\u0440\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0432 jemalloc \u0434\u043b\u044f \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u044f\u0434\u0440\u0430 CPU \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0441\u0432\u043e\u044f \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u0430\u044f \u043e\u0431\u043b\u0430\u0441\u0442\u044c \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u0438, \u0447\u0442\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u043b\u0438\u043d\u0435\u0439\u043d\u043e\u0439 \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u0443\u0435\u043c\u043e\u0441\u0442\u0438 \u043f\u0440\u0438 \u0440\u043e\u0441\u0442\u0435 [&hellip;]<\/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-168709","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043f\u0443\u0441\u0442\u044f 4 \u0433\u043e\u0434\u0430 \u043f\u043e\u0441\u043b\u0435 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438 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