--- title: Improved G1 Performance in #Java 26 #IJN #Coding | daily.dev description: JDK Enhancement Proposal (JEP) 522 improves the throughput of G1, Java's default garbage collector, by reducing contention and synchronization over the card... canonical: https://daily.dev/posts/improved-g1-performance-in-java-26-ijn-coding-i3w3ml8kx twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Improved G1 Performance in #Java 26 #IJN #Coding | daily.dev og:description: JDK Enhancement Proposal (JEP) 522 improves the throughput of G1, Java's default garbage collector, by reducing contention and synchronization over the card... og:url: https://daily.dev/posts/improved-g1-performance-in-java-26-ijn-coding-i3w3ml8kx og:image: https://api.daily.dev/og/posts/i3W3ml8kX.png og:image:alt: Improved G1 Performance in #Java 26 #IJN #Coding 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. # Improved G1 Performance in #Java 26 #IJN #Coding **[Java \(Official Oracle\)](https://daily.dev/sources/java-oracle)** · 1 min read · 0 upvotes · 0 comments ## Summary JDK Enhancement Proposal (JEP) 522 improves the throughput of G1, Java's default garbage collector, by reducing contention and synchronization over the card table data structure. This yields performance gains of a few percent up to 15%, depending on how heavily an application modifies object-reference fields. A deeper technical breakdown covering GC basics, regional collectors, card tables, write barriers, and JIT compiler involvement is available in Inside Java Newscast #99. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Inside Java Newscast \#99 – Inside.java](https://daily.dev/posts/inside-java-newscast-99-inside-java-jmyybhuya) · Inside Java · 0 upvotes · 0 comments - [Episode 54 “How JDK 26 Improves G1's Throughput” \[AtA\] – Inside.java](https://daily.dev/posts/episode-54-how-jdk-26-improves-g1-s-throughput-ata-inside-java-6ok2qo9gw) · Inside Java · 0 upvotes · 0 comments - [Performance Improvements in JDK 26](https://daily.dev/posts/performance-improvements-in-jdk-26-2dhfwn7ad) · Baeldung · 7 upvotes · 0 comments --- Tags: [#java](https://daily.dev/tags/java), [#jvm](https://daily.dev/tags/jvm), [#jdk](https://daily.dev/tags/jdk) [View this post on daily.dev](https://daily.dev/posts/improved-g1-performance-in-java-26-ijn-coding-i3w3ml8kx) ```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":"Improved G1 Performance in #Java 26 #IJN #Coding","url":"https://daily.dev/posts/improved-g1-performance-in-java-26-ijn-coding-i3w3ml8kx","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/improved-g1-performance-in-java-26-ijn-coding-i3w3ml8kx"},"datePublished":"2026-03-16T08:13:31.967Z","dateModified":"2026-03-16T08:20:20.144Z","description":"JDK Enhancement Proposal (JEP) 522 improves the throughput of G1, Java's default garbage collector, by reducing contention and synchronization over the card...","image":"https://i.ytimg.com/vi/GeQj6cpgIyg/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/GeQj6cpgIyg/sddefault.jpg","isAccessibleForFree":true,"articleSection":"Java (Official Oracle)","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Java (Official Oracle)","logo":"https://media.daily.dev/image/upload/s--SM9hIYUY--/f_auto,q_auto/v1773648791/logos/java-oracle?_a=BAMAMiiu0","url":"https://daily.dev/sources/java-oracle"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/improved-g1-performance-in-java-26-ijn-coding-i3w3ml8kx","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"java,jvm,jdk","timeRequired":"PT1M","video":{"@type":"VideoObject","name":"Improved G1 Performance in #Java 26 #IJN #Coding","description":"JDK Enhancement Proposal (JEP) 522 improves the throughput of G1, Java's default garbage collector, by reducing contention and synchronization over the card...","thumbnailUrl":"https://i.ytimg.com/vi/GeQj6cpgIyg/sddefault.jpg","uploadDate":"2026-03-16T08:13:31.967Z","duration":"PT1M","url":"https://api.daily.dev/r/i3W3ml8kX","embedUrl":"https://www.youtube.com/embed/GeQj6cpgIyg"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Java (Official Oracle)","item":"https://daily.dev/sources/java-oracle"},{"@type":"ListItem","position":3,"name":"Improved G1 Performance in #Java 26 #IJN #Coding"}]} ```