{"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\/pt\/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>Ap\u00f3s quase quatro anos de pausa (veja &laquo;<a rel=\"nofollow\" href=\"https:\/\/www.linux.org.ru\/forum\/development\/17998612\">jemalloc tudo<\/a>&raquo;), foi lan\u00e7ado o 5.3.1 do alocador <a rel=\"nofollow\" href=\"https:\/\/jemalloc.net\">jemalloc<\/a> \u2013 a implementa\u00e7\u00e3o do malloc(3), que foca especialmente na preven\u00e7\u00e3o da fragmenta\u00e7\u00e3o e no suporte \u00e0 paraleliza\u00e7\u00e3o escal\u00e1vel.<\/p>\n<p><\/noindex><\/noindex> <\/p>\n<p>A nova vers\u00e3o inclui mais de 390 commits com corre\u00e7\u00f5es de bugs, novas funcionalidades, otimiza\u00e7\u00f5es de desempenho e melhorias de portabilidade.<\/p>\n<p>O projeto \u00e9 escrito em C e \u00e9 distribu\u00eddo sob a licen\u00e7a BSD.<\/p>\n<p>Novas funcionalidades:<\/p>\n<ul>\n<li>suporte a pvalloc(3).<\/li>\n<li>detec\u00e7\u00e3o de dupla libera\u00e7\u00e3o de mem\u00f3ria na vers\u00e3o de depura\u00e7\u00e3o;<\/li>\n<li>foi adicionada a op\u00e7\u00e3o de compila\u00e7\u00e3o &#8212;enable-pageid para ativar a anota\u00e7\u00e3o da mem\u00f3ria exibida.<\/li>\n<li>adicionado o par\u00e2metro runtime prof_bt_max para controlar a profundidade m\u00e1xima da pilha para profiling;<\/li>\n<li>foi adicionada a op\u00e7\u00e3o de compila\u00e7\u00e3o &#8212;enable-force-getenv para usar getenv em vez de secure_getenv;<\/li>\n<li>foi adicionada a op\u00e7\u00e3o de compila\u00e7\u00e3o &#8212;disable-dss para desativar o uso de sbrk(2);<\/li>\n<li>adicionada a op\u00e7\u00e3o de compila\u00e7\u00e3o tcache_ncached_max para controlar a quantidade de elementos no cache de threads.<\/li>\n<li>adicionado o par\u00e2metro runtime calloc_madvise_threshold para determinar se o kernel ou memset \u00e9 usado para zerar blocos de mem\u00f3ria alocados ao chamar calloc;<\/li>\n<li>foi adicionada a op\u00e7\u00e3o de compila\u00e7\u00e3o &#8212;disable-user-config para desativar a leitura durante a execu\u00e7\u00e3o das configura\u00e7\u00f5es do arquivo \/etc\/malloc.conf ou da vari\u00e1vel de ambiente MALLOC_CONF;<\/li>\n<li>adicionado o par\u00e2metro runtime disable_large_size_classes para garantir o funcionamento do novo algoritmo de c\u00e1lculo do tamanho dispon\u00edvel, que minimiza a sobrecarga de mem\u00f3ria ao alocar grandes blocos de mem\u00f3ria, ou seja, com tamanho &gt;= 4 * PAGE;<\/li>\n<li>foi habilitado o uso do process_madvise e adicionado o par\u00e2metro de runtime process_madvise_max_batch para controlar o n\u00famero m\u00e1ximo de regi\u00f5es de mem\u00f3ria em cada &laquo;batch&raquo; madvise;<\/li>\n<li>adicionados interfaces mallctl:\n<ul>\n<li>opt.prof_bt_max;<\/li>\n<li>arena.&lt;i&gt;.name para alterar e obter os nomes das &laquo;arenas&raquo;;<\/li>\n<li>thread.tcache.max para alterar e obter tcache_max do thread atual;<\/li>\n<li>thread.tcache.ncached_max.write e thread.tcache.ncached_max.read_sizeclass para alterar e obter ncached_max do thread atual;<\/li>\n<li>arenas.hugepage para retornar o tamanho usado de hugepage, tamb\u00e9m exportando para as estat\u00edsticas de malloc;<\/li>\n<li>approximate_stats.active para obter um valor aproximado do volume atual de bytes ativos, que n\u00e3o deve ser comparado com outros dados estat\u00edsticos obtidos.<\/li>\n<\/ul>\n<\/li>\n<li>tamb\u00e9m foram corrigidos muitos bugs e melhorada a documenta\u00e7\u00e3o.<\/li>\n<\/ul>\n<p>Fonte: <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 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