{"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\/ro\/blog\/news\/dostupna-biblioteka-upravleniya-pamyatyu-jemalloc-5-3-1","title":{"rendered":"Biblioteca de gestionare a memoriei jemalloc 5.3.1 este disponibil\u0103","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dup\u0103 4 ani de la publicarea ultimei actualiz\u0103ri, este disponibil\u0103 versiunea 5.3.1 a bibliotecii de management al memoriei jemalloc, care ofer\u0103 o implementare alternativ\u0103 a func\u021biilor malloc, optimizat\u0103 pentru reducerea fragment\u0103rii \u0219i pentru a func\u021biona pe sisteme multiprocesor. Pentru a rezolva problemele de blocare pe sistemele multi-core, jemalloc folose\u0219te o zon\u0103 de alocare a memoriei izolat\u0103 pentru fiecare nucleu CPU, ceea ce permite ob\u021binerea unei scalabilit\u0103\u021bi liniare pe m\u0103sur\u0103 ce num\u0103rul de fire de execu\u021bie cre\u0219te.     <\/p>\n<p>\u00cen iunie 2025, autorul proiectului a oprit \u00eentre\u021binerea \u0219i a mutat repository-ul jemalloc \u00een modul de arhivare, dar acum o lun\u0103, compania Meta, care folose\u0219te jemalloc \u00een infrastructura sa, a reluat dezvoltarea. Ini\u021bial, biblioteca a fost dezvoltat\u0103 pentru FreeBSD \u0219i este utilizat\u0103 implicit \u00een acest sistem de operare din 2005. Codul bibliotecii este scris \u00een C \u0219i este distribuit sub licen\u021ba BSD.      <\/p>\n<p>Printre modific\u0103ri:  <\/p>\n<ul>\n<li class=\"l\"> A fost implementat\u0103 func\u021bia pvalloc, care poate fi util\u0103 \u00een \u00eenlocuirea alocatoarei de memorie libc.\n<li class=\"l\"> \u00cen versiunile de depanare, a fost inclus un mod de detectare a apelului dublu al func\u021biei free(). Pentru a ajusta dimensiunea stivei \u00een cadrul c\u0103reia se desf\u0103\u0219oar\u0103 scanarea, a fost ad\u0103ugat parametru debug_double_free_max_scan.\n<li class=\"l\"> A fost ad\u0103gat\u0103 op\u021biunea de compilare &#171;&#8212;enable-pageid&#187; pentru a seta etichete la maparea memoriei, utiliz\u00e2nd prctl cu flagul PR_SET_VMA. Dup\u0103 activare, maparea poate fi monitorizat\u0103 prin \/proc\/\/maps.\n<li class=\"l\"> A fost ad\u0103ugat parametrul &#171;prof_bt_max&#187;, care permite stabilirea ad\u00e2ncimii maxime a stivei pentru profilare.\n<li class=\"l\"> A fost ad\u0103gat\u0103 op\u021biunea de compilare &#171;&#8212;enable-force-getenv&#187; pentru a utiliza func\u021bia standard getenv() \u00een locul func\u021biei protejate secure_getenv().\n<li class=\"l\"> A fost ad\u0103gat\u0103 op\u021biunea de compilare &#171;&#8212;disable-dss&#187; pentru a dezactiva utilizarea func\u021biei sbrk().\n<li class=\"l\"> A fost ad\u0103ugat parametrul &#171;tcache_ncached_max&#187; pentru a limita num\u0103rul de elemente din cache-ul thread-urilor.\n<li class=\"l\"> A fost ad\u0103ugat parametrul &#171;calloc_madvise_threshold&#187; pentru a configura utilizarea mecanismului kernel-ului madvise sau func\u021biei memset pentru a clea memoria alocat\u0103 prin func\u021bia calloc.\n<li class=\"l\"> A fost ad\u0103gat\u0103 op\u021biunea de compilare &#171;&#8212;disable-user-config&#187; pentru a dezactiva \u00eenc\u0103rcarea set\u0103rilor din fi\u0219ierul \/etc\/malloc.conf sau din variabila de mediu MALLOC_CONF.\n<li class=\"l\"> A fost ad\u0103ugat parametrul &#171;process_madvise_max_batch&#187; pentru a limita num\u0103rul de blocuri de memorie pentru fiecare opera\u021biune batch madvise.\n<li class=\"l\"> A fost ad\u0103ugat parametrul &#171;disable_large_size_classes&#187; pentru a dezactiva noul algoritm de calcul al dimensiunii memoriei alocate, reduc\u00e2nd cheltuielile generale la alocarea blocurilor de mai mult de 4 pagini de memorie.\n<li class=\"l\"> Utilitarul mallctl a fost completat cu op\u021biuni: opt.prof_bt_max, arena.&lt;i&gt;.name, thread.tcache.max, thread.tcache.ncached_max.write, thread.tcache.ncached_max.read_sizeclass, arenas.hugepage \u0219i approximate_stats.active.      <\/ul>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65201\">opennet.ro<\/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 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fragmentarea.","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/dostupna-biblioteka-upravleniya-pamyatyu-jemalloc-5-3-1","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","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\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u0430\u043c\u044f\u0442\u044c\u044e jemalloc 5.3.1 | ProHoster","og:description":"\u0421\u043f\u0443\u0441\u0442\u044f 4 \u0433\u043e\u0434\u0430 \u043f\u043e\u0441\u043b\u0435 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