{"id":168915,"date":"2026-04-16T11:12:42","date_gmt":"2026-04-16T09:12:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/jemalloc-5-3-1"},"modified":"2026-04-16T11:12:42","modified_gmt":"2026-04-16T09:12:42","slug":"jemalloc-5-3-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/jemalloc-5-3-1","title":{"rendered":"jemalloc 5.3.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex>      <noindex><\/p>\n<p>A k\u00f6zel n\u00e9gy \u00e9ves sz\u00fcnet ut\u00e1n (l\u00e1sd: &laquo;<a rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/forum\/development\/17998612\">jemalloc minden<\/a>&raquo;) megjelent az 5.3.1 allok\u00e1tor <a rel=\"nofollow\" href=\"https:\/\/jemalloc.net\">\u2014 az 5.1.0 verzi\u00f3ra,<\/a> \u2013 a malloc(3) megval\u00f3s\u00edt\u00e1sa, amely k\u00fcl\u00f6n\u00f6s figyelmet ford\u00edt a fragment\u00e1ci\u00f3 megakad\u00e1lyoz\u00e1s\u00e1ra \u00e9s a sk\u00e1l\u00e1zhat\u00f3 p\u00e1rhuzamoss\u00e1g t\u00e1mogat\u00e1s\u00e1ra.<\/p>\n<p><\/noindex><\/noindex> <\/p>\n<p>Az \u00faj kiad\u00e1s t\u00f6bb mint 390 commitot tartalmaz a hibajav\u00edt\u00e1sokkal, \u00faj funkci\u00f3kkal, teljes\u00edtm\u00e9nyoptimaliz\u00e1l\u00e1ssal \u00e9s a hordozhat\u00f3s\u00e1g jav\u00edt\u00e1s\u00e1val.<\/p>\n<p>A projekt C nyelven \u00edr\u00f3dott \u00e9s BSD licenc alatt terjesztik.<\/p>\n<p>\u00daj lehet\u0151s\u00e9gek:<\/p>\n<ul>\n<li>pvalloc(3) t\u00e1mogat\u00e1s.<\/li>\n<li>dupla mem\u00f3riakiad\u00e1s \u00e9szlel\u00e9se a hibakeres\u0151 buildben;<\/li>\n<li>hozz\u00e1adva a ford\u00edt\u00e1si opci\u00f3 &#8212;enable-pageid a megjelen\u00edtett mem\u00f3ria annot\u00e1ci\u00f3j\u00e1nak enged\u00e9lyez\u00e9s\u00e9hez.<\/li>\n<li>hozz\u00e1adva egy runtime param\u00e9ter: prof_bt_max a profiloz\u00e1s m\u00e9lys\u00e9g\u00e9nek maxim\u00e1lis szab\u00e1lyoz\u00e1s\u00e1ra;<\/li>\n<li>hozz\u00e1adva a ford\u00edt\u00e1si opci\u00f3 &#8212;enable-force-getenv a getenv helyett a secure_getenv haszn\u00e1lat\u00e1hoz;<\/li>\n<li>hozz\u00e1adva a ford\u00edt\u00e1si opci\u00f3 &#8212;disable-dss az sbrk(2) haszn\u00e1lat\u00e1nak letilt\u00e1s\u00e1hoz;<\/li>\n<li>hozz\u00e1adva a tcache_ncached_max ford\u00edt\u00e1si opci\u00f3 a sz\u00e1lakban l\u00e9v\u0151 elemek sz\u00e1m\u00e1nak kezel\u00e9s\u00e9re a cache-ben.<\/li>\n<li>hozz\u00e1adva a runtime param\u00e9ter: calloc_madvise_threshold annak meg\u00e1llap\u00edt\u00e1s\u00e1ra, hogy az kernel vagy a memset haszn\u00e1latos-e a calloc h\u00edv\u00e1sakor allok\u00e1lt blokkok null\u00e1z\u00e1s\u00e1ra;<\/li>\n<li>hozz\u00e1adva a ford\u00edt\u00e1si opci\u00f3 &#8212;disable-user-config a fut\u00e1sid\u0151ben a \/etc\/malloc.conf f\u00e1jlb\u00f3l vagy a MALLOC_CONF k\u00f6rnyezeti v\u00e1ltoz\u00f3b\u00f3l sz\u00e1rmaz\u00f3 konfigur\u00e1ci\u00f3k olvas\u00e1s\u00e1nak letilt\u00e1s\u00e1hoz;<\/li>\n<li>hozz\u00e1adva a disable_large_size_classes runtime param\u00e9ter az \u00faj elj\u00e1r\u00e1s m\u00e9ret kalkul\u00e1ci\u00f3j\u00e1nak biztos\u00edt\u00e1s\u00e1ra, amely minimaliz\u00e1lja a mem\u00f3riak\u00f6lts\u00e9geket nagy mem\u00f3ria blokkok allok\u00e1l\u00e1sakor, azaz ha a m\u00e9ret &gt;= 4 * PAGE;<\/li>\n<li>bekapcsolva a process_madvise haszn\u00e1lata, \u00e9s hozz\u00e1adva a process_madvise_max_batch fut\u00e1sid\u0151beli param\u00e9ter a mem\u00f3ria r\u00e9gi\u00f3k maxim\u00e1lis sz\u00e1m\u00e1nak kezel\u00e9s\u00e9re minden &laquo;p\u00e1r&raquo; madvise sor\u00e1n;<\/li>\n<li>mallctl interf\u00e9szek hozz\u00e1adva:\n<ul>\n<li>opt.prof_bt_max;<\/li>\n<li>arena.&lt;i&gt;.name az &laquo;ar\u00e9n\u00e1k&raquo; nev\u00e9nak m\u00f3dos\u00edt\u00e1s\u00e1hoz \u00e9s lek\u00e9r\u00e9s\u00e9hez;<\/li>\n<li>thread.tcache.max a jelenlegi sz\u00e1l tcache_max-j\u00e1nak m\u00f3dos\u00edt\u00e1s\u00e1hoz \u00e9s megszerz\u00e9s\u00e9hez;<\/li>\n<li>thread.tcache.ncached_max.write \u00e9s thread.tcache.ncached_max.read_sizeclass a jelenlegi sz\u00e1l ncached_max-j\u00e1nak m\u00f3dos\u00edt\u00e1s\u00e1hoz \u00e9s megszerz\u00e9s\u00e9hez;<\/li>\n<li>arenas.hugepage a haszn\u00e1lt hugepage m\u00e9ret\u00e9nek visszaad\u00e1s\u00e1hoz, amely a malloc statisztik\u00e1ban is export\u00e1l\u00e1sra ker\u00fcl;<\/li>\n<li>approximate_stats.active a jelenleg akt\u00edv byte-ok hozz\u00e1vet\u0151leges mennyis\u00e9g\u00e9nek beszerz\u00e9s\u00e9hez, amelyet nem szabad m\u00e1s beszerzett statisztikai adatokkal \u00f6sszehasonl\u00edtani.<\/li>\n<\/ul>\n<\/li>\n<li>sz\u00e1mos hiba jav\u00edtva \u00e9s a dokument\u00e1ci\u00f3 jav\u00edtva.<\/li>\n<\/ul>\n<p>Forr\u00e1s: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/news\/development\/18266167\">linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u043f\u043e\u0447\u0442\u0438 \u0447\u0435\u0442\u044b\u0440\u0451\u0445\u043b\u0435\u0442\u043d\u0435\u0439 \u043f\u0430\u0443\u0437\u044b (\u0441\u043c. &laquo;jemalloc \u0432\u0441\u0451&raquo;) \u0441\u043e\u0441\u0442\u043e\u044f\u043b\u0441\u044f \u0432\u044b\u043f\u0443\u0441\u043a 5.3.1 \u0430\u043b\u043b\u043e\u043a\u0430\u0442\u043e\u0440\u0430 jemalloc &ndash; \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 malloc(3), \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043e\u0441\u043e\u0431\u043e\u0435 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u0443\u0434\u0435\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u0440\u0435\u0434\u043e\u0442\u0432\u0440\u0430\u0449\u0435\u043d\u0438\u044e \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u0438 \u0438 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0435 \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u0443\u0435\u043c\u043e\u0439 \u043f\u0430\u0440\u0430\u043b\u043b\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438. \u041d\u043e\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u0432\u043a\u043b\u044e\u0447\u0430\u0435\u0442 \u0432 \u0441\u0435\u0431\u044f \u0431\u043e\u043b\u0435\u0435 390 \u043a\u043e\u043c\u043c\u0438\u0442\u043e\u0432 \u0441 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435\u043c \u043e\u0448\u0438\u0431\u043e\u043a, \u043d\u043e\u0432\u044b\u043c\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u044f\u043c\u0438, \u043e\u043f\u0442\u0438\u043c\u0438\u0437\u0430\u0446\u0438\u0435\u0439 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0438 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u0435\u043c \u043f\u0435\u0440\u0435\u043d\u043e\u0441\u0438\u043c\u043e\u0441\u0442\u0438. \u041f\u0440\u043e\u0435\u043a\u0442 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421 \u0438 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0438 BSD. \u041d\u043e\u0432\u044b\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-168915","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\u043e\u0441\u043b\u0435 \u043f\u043e\u0447\u0442\u0438 \u0447\u0435\u0442\u044b\u0440\u0451\u0445\u043b\u0435\u0442\u043d\u0435\u0439 \u043f\u0430\u0443\u0437\u044b (\u0441\u043c.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Erik 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