--- title: jemalloc 5.3.1 Released With Many Improvements After... description: jemalloc 5.3.1 has been released after nearly four years since the previous 5.3.0 release, incorporating approximately 400 commits. The release follows Meta's... canonical: https://daily.dev/posts/jemalloc-5-3-1-released-with-many-improvements-after-nearly-four-year-hiatus-95zekya7t twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: jemalloc 5.3.1 Released With Many Improvements After Nearly Four Year Hiatus | daily.dev og:description: jemalloc 5.3.1 has been released after nearly four years since the previous 5.3.0 release, incorporating approximately 400 commits. The release follows Meta's... og:url: https://daily.dev/posts/jemalloc-5-3-1-released-with-many-improvements-after-nearly-four-year-hiatus-95zekya7t og:image: https://api.daily.dev/og/posts/95ZEKya7t.png og:image:alt: jemalloc 5.3.1 Released With Many Improvements After Nearly Four Year Hiatus og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # jemalloc 5.3.1 Released With Many Improvements After Nearly Four Year Hiatus **[Phoronix](https://daily.dev/sources/phoronix)** · 1 min read · 0 upvotes · 0 comments ## Summary jemalloc 5.3.1 has been released after nearly four years since the previous 5.3.0 release, incorporating approximately 400 commits. The release follows Meta's renewed investment in the project. Key improvements include pvalloc support, new compile-time and run-time optimizations, process_madvise usage, new mallctl interfaces, C23 compatibility (free_sized and free_aligned_sized), inlining for faster operator delete, pairing heap optimizations, Windows thread-local storage improvements, a redesigned TCACHE garbage collector, and better reuse efficiency. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Who even uses jemalloc in 2026 anyway? \(many major projects\)](https://daily.dev/posts/who-even-uses-jemalloc-in-2026-anyway-many-major-projects--0fzup9zdf) · Lobsters · 0 upvotes · 0 comments - [Meta Renewing Investment Into The jemalloc Memory Allocator](https://daily.dev/posts/meta-renewing-investment-into-the-jemalloc-memory-allocator-ou8az7u8r) · Phoronix · 0 upvotes · 0 comments - [Investing in Infrastructure: Meta’s Renewed Commitment to jemalloc](https://daily.dev/posts/investing-in-infrastructure-meta-s-renewed-commitment-to-jemalloc-8kexx6zxb) · Facebook Engineering · 0 upvotes · 0 comments --- Tags: [#performance](https://daily.dev/tags/performance), [#c](https://daily.dev/tags/c) [View this post on daily.dev](https://daily.dev/posts/jemalloc-5-3-1-released-with-many-improvements-after-nearly-four-year-hiatus-95zekya7t) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"jemalloc 5.3.1 Released With Many Improvements After Nearly Four Year Hiatus","url":"https://daily.dev/posts/jemalloc-5-3-1-released-with-many-improvements-after-nearly-four-year-hiatus-95zekya7t","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/jemalloc-5-3-1-released-with-many-improvements-after-nearly-four-year-hiatus-95zekya7t"},"datePublished":"2026-04-14T00:31:42.028Z","dateModified":"2026-04-15T06:35:45.903Z","description":"jemalloc 5.3.1 has been released after nearly four years since the previous 5.3.0 release, incorporating approximately 400 commits. 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