{"id":183404,"date":"2026-09-18T22:54:22","date_gmt":"2026-09-18T20:54:22","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/opublikovana-biblioteka-upravleniya-pamyatyu-jemalloc-5-3"},"modified":"2026-09-18T22:54:25","modified_gmt":"2026-09-18T20:54:25","slug":"jemalloc-5-3-memory-management-library-released","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/jemalloc-5-3-memory-management-library-released","title":{"rendered":"Byla zve\u0159ejn\u011bna knihovna pro spr\u00e1vu pam\u011bti jemalloc 5.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byla p\u0159edstavena nov\u00e1 verze knihovny pro spr\u00e1vu pam\u011bti jemalloc 5.4.0, kter\u00e1 nab\u00edz\u00ed alternativn\u00ed implementaci funkc\u00ed malloc, optimalizovanou pro sn\u00ed\u017een\u00ed fragmentace a provoz na v\u00edcero procesorov\u00fdch syst\u00e9mech. Pro \u0159e\u0161en\u00ed probl\u00e9m\u016f se z\u00e1mky na v\u00edcej\u00e1drov\u00fdch syst\u00e9mech vyu\u017e\u00edv\u00e1 jemalloc pro ka\u017ed\u00e9 j\u00e1dro CPU vlastn\u00ed izolovanou oblast pro alokaci pam\u011bti, co\u017e umo\u017e\u0148uje dos\u00e1hnout line\u00e1rn\u00ed \u0161k\u00e1lovatelnosti s rostouc\u00edm po\u010dtem vl\u00e1ken.     <\/p>\n<p>V \u010dervnu 2025 ukon\u010dil autor projektu podporu a p\u0159evedl repozit\u00e1\u0159 jemalloc do archiva\u010dn\u00edho re\u017eimu, ale v b\u0159eznu tohoto roku obnovila v\u00fdvoj spole\u010dnost Meta, kter\u00e1 jemalloc pou\u017e\u00edv\u00e1 ve sv\u00e9 infrastruktu\u0159e. Knihovna byla p\u016fvodn\u011b vyvinuta pro FreeBSD a od roku 2005 se pou\u017e\u00edv\u00e1 v tomto syst\u00e9mu jako v\u00fdchoz\u00ed. K\u00f3d knihovny je naps\u00e1n v C a \u0161\u00ed\u0159\u00ed se pod licenci BSD.      <\/p>\n<p>Mezi zm\u011bnami:  <\/p>\n<ul>\n<li class=\"l\"> Byla zjednodu\u0161ena logika pln\u011bn\u00ed a vypr\u00e1zdn\u011bn\u00ed tcache (Thread Local Cache), stejn\u011b jako spr\u00e1va alokace pam\u011bti.\n<li class=\"l\"> Byly sjednoceny alok\u00e1tory str\u00e1nek pam\u011bti PAC (Page Allocator Classic) a HPA (Huge Page Allocator). Byla odstran\u011bna komplikovan\u00e1 mechanika nep\u0159\u00edm\u00fdch vol\u00e1n\u00ed p\u0159es vtable (PAI vtable).\n<li class=\"l\"> Pro zjednodu\u0161en\u00ed \u00fadr\u017eby a roz\u0161\u00ed\u0159en\u00ed platforem byly v\u0161echny platformov\u011b z\u00e1visl\u00e9 operace p\u0159esunuty do samostatn\u00fdch z\u00e1hlav\u00ed.\n<li class=\"l\">  Byla zjednodu\u0161ena spr\u00e1va p\u0159\u00edkaz\u016f mallctl a rovn\u011b\u017e byla p\u0159epracov\u00e1na infrastruktura generov\u00e1n\u00ed a v\u00fdstupu statistik.\n<li class=\"l\">  Byla p\u0159id\u00e1na vlajka EXTENT_ALLOC_FLAG_PINNED, kter\u00e1 umo\u017e\u0148uje ozna\u010dovat nevytla\u010diteln\u00e9 oblasti mapov\u00e1n\u00ed pam\u011bti, jako jsou str\u00e1nky HugeTLB, pro jejich prioritn\u00ed znovu pou\u017eit\u00ed. Pro z\u00edsk\u00e1v\u00e1n\u00ed statistik o vyu\u017eit\u00ed p\u0159i\u0159azen\u00e9 pam\u011bti byly p\u0159id\u00e1ny nov\u00e9 rozhran\u00ed mallctl: stats.pinned, stats.arenas.<i>.pinned, stats.arenas.<i>.extents..npinned, stats.arenas.<i>.extents..pinned_bytes a stats.arenas.<i>.mutexes.extents_pinned.{counter}.\n<li class=\"l\"> Obsah statistik malloc byl synchronizov\u00e1n v \u010diteln\u00e9 a JSON form\u011b.\n<li class=\"l\"> Byly odstran\u011bny zastaral\u00e9 parametry lg_tcache_nslots_mul, tcache_nslots_small_min, tcache_nslots_small_max, tcache_nslots_large, tcache_gc_delay_bytes, lg_tcache_flush_small_div a lg_tcache_flush_large_div.      <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66304\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\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 5.4.0, \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 \u0447\u0438\u0441\u043b\u0430 \u043f\u043e\u0442\u043e\u043a\u043e\u0432. \u0412 \u0438\u044e\u043d\u0435 2025 \u0433\u043e\u0434\u0430 \u0430\u0432\u0442\u043e\u0440 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-183404","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\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 5.4.0, 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5.4.0, kter\u00e1 nab\u00edz\u00ed alternativn\u00ed implementaci funkc\u00ed malloc, optimalizovanou pro sn\u00ed\u017een\u00ed fragmentace a provoz na v\u00edcero procesorov\u00fdch syst\u00e9mech.","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/jemalloc-5-3-memory-management-library-released","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","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\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 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