--- title: Performance Improvements in JDK 26 | daily.dev description: JDK 26 delivers a broad set of performance improvements across four areas. In JDK Libraries: the new LazyConstant API (formerly StableValue) enables... canonical: https://daily.dev/posts/performance-improvements-in-jdk-26-4as8hy8yl twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Performance Improvements in JDK 26 | daily.dev og:description: JDK 26 delivers a broad set of performance improvements across four areas. In JDK Libraries: the new LazyConstant API (formerly StableValue) enables... og:url: https://daily.dev/posts/performance-improvements-in-jdk-26-4as8hy8yl og:image: https://api.daily.dev/og/posts/4AS8hy8yL.png og:image:alt: Performance Improvements in JDK 26 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. # Performance Improvements in JDK 26 **[Inside Java](https://daily.dev/sources/inside_java)** · 10 min read · 19 upvotes · 2 comments ## Summary JDK 26 delivers a broad set of performance improvements across four areas. In JDK Libraries: the new LazyConstant API (formerly StableValue) enables at-most-once, thread-safe lazy initialization with JVM constant-folding optimizations; MemorySegment::getString reduces intermediate allocations for faster string extraction from off-heap memory; record hashCode() is now as fast as hand-written implementations; and cryptographic algorithms (AES, ML-DSA, P-256), GZIPInputStream, and reflection utilities receive targeted speedups. In Garbage Collectors: G1 gains a dual card-table design (JEP 522) that cuts write-barrier synchronization overhead, yielding 5–15% throughput gains in reference-heavy workloads. In Runtime: the AOT cache now supports all GCs including ZGC via a GC-agnostic streamable object format (JEP 516); the default initial heap size is reduced to MinHeapSize for faster startup; and virtual threads can now yield during class initialization, reducing carrier-thread starvation. In the Compiler: C2 JIT can now compile methods with very large parameter lists, and its loop-vectorization cost model is improved for better SIMD decisions. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@hideyoshi** · 1 upvotes >  **@abirshaikh** · 1 upvotes >  ## Similar posts on daily.dev - [New Features in Java 26](https://daily.dev/posts/new-features-in-java-26-x8pp9vbj4) · Baeldung · 76 upvotes · 9 comments - [Java 26 Delivers Language Innovation, Library Improvements, Performance and Security](https://daily.dev/posts/java-26-delivers-language-innovation-library-improvements-performance-and-security-26rrhgwjk) · InfoQ · 0 upvotes · 0 comments --- Tags: [#java](https://daily.dev/tags/java), [#jvm](https://daily.dev/tags/jvm) [View this post on daily.dev](https://daily.dev/posts/performance-improvements-in-jdk-26-4as8hy8yl) ```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":"Performance Improvements in JDK 26","url":"https://daily.dev/posts/performance-improvements-in-jdk-26-4as8hy8yl","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/performance-improvements-in-jdk-26-4as8hy8yl"},"datePublished":"2026-06-09T06:51:28.545Z","dateModified":"2026-06-09T06:51:55.747Z","description":"JDK 26 delivers a broad set of performance improvements across four areas. 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