--- title: JDK 27: Default G1 in All Environments | daily.dev description: Starting with JDK 27, the HotSpot JVM will use G1 as the default garbage collector in all environments, including constrained ones (single CPU or less than... canonical: https://daily.dev/posts/jdk-27-default-g1-in-all-environments-5muohviuc twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: JDK 27: Default G1 in All Environments | daily.dev og:description: Starting with JDK 27, the HotSpot JVM will use G1 as the default garbage collector in all environments, including constrained ones (single CPU or less than... og:url: https://daily.dev/posts/jdk-27-default-g1-in-all-environments-5muohviuc og:image: https://api.daily.dev/og/posts/5MuoHvIUc.png og:image:alt: JDK 27: Default G1 in All Environments 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. # JDK 27: Default G1 in All Environments **[Inside Java](https://daily.dev/sources/inside_java)** · 2 min read · 0 upvotes · 0 comments ## Summary Starting with JDK 27, the HotSpot JVM will use G1 as the default garbage collector in all environments, including constrained ones (single CPU or less than 1792 MB RAM) where Serial GC was previously preferred. Recent improvements have made G1 competitive with Serial in those environments, offering similar native memory overhead, slightly lower throughput, and lower maximum latencies. Serial GC is not removed and remains available. Applications running in constrained environments without an explicit GC selection are advised to benchmark against different GCs or explicitly configure Serial if they want to preserve previous behavior. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [The Ultimate 10 Years Java Garbage Collection Guide \(2016–2026\) – Choosing the Right GC for Every Workload](https://daily.dev/posts/the-ultimate-10-years-java-garbage-collection-guide-2016-2026-choosing-the-right-gc-for-every-wo-gcjhfz5py) · Jakarta EE · 3 upvotes · 0 comments - [JEP targeted to JDK 27: 523: Make G1 the Default Garbage Collector in All Environments – Inside.java](https://daily.dev/posts/jep-targeted-to-jdk-27-523-make-g1-the-default-garbage-collector-in-all-environments-inside-java-iadewlhx5) · Inside Java · 2 upvotes · 0 comments - [foojay – a place for friends of OpenJDK](https://daily.dev/posts/foojay-a-place-for-friends-of-openjdk-yn6v0glcw) · Foojay.io · 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/jdk-27-default-g1-in-all-environments-5muohviuc) ```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":"JDK 27: Default G1 in All Environments","url":"https://daily.dev/posts/jdk-27-default-g1-in-all-environments-5muohviuc","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/jdk-27-default-g1-in-all-environments-5muohviuc"},"datePublished":"2026-07-20T14:10:14.421Z","dateModified":"2026-07-20T14:11:00.522Z","description":"Starting with JDK 27, the HotSpot JVM will use G1 as the default garbage collector in all environments, including constrained ones (single CPU or less than...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/8a590c6abfe6299c110ce5c325f2383e?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/8a590c6abfe6299c110ce5c325f2383e?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"Inside Java","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":"Inside Java","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/de5992d95f374790bdfd2ae03a16f6e3","url":"https://daily.dev/sources/inside_java"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/jdk-27-default-g1-in-all-environments-5muohviuc","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"java,jvm","timeRequired":"PT2M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Inside Java","item":"https://daily.dev/sources/inside_java"},{"@type":"ListItem","position":3,"name":"JDK 27: Default G1 in All Environments"}]} ```