#G1GC
Why is Arrays.fill 265 times slower on G1GC
Good article from Krzysztof Ślusarski
krzysztofslusarski.github.io/2026/08/19/g...
[Java][JVM][Tuning][Profiling][G1][JIT] Why is Arrays.fill 265 times slower on G1GC?
[Java][JVM][Tuning][Profiling][G1][JIT] Why is Arrays.fill 265 times slower on G1GC?
krzysztofslusarski.github.io
August 19, 2026 at 8:47 PM
不知道为什么chatgpt和deepseek都说zgc占用只多百分之几,java21 mc实测下来占用多太多了,而且zgc在内存不足的时候会特别卡,比g1gc多分配2g堆内存还是个位数帧数
May 4, 2026 at 5:04 AM
ooooh my fursona is so big and round from JVM Garbage Collection Eden Space G1GC Heap Memory
February 12, 2025 at 4:08 AM
I present to you my article comparing the three GC types on JDK-23:
G1GC, ZGC+Generational, Shenandoah:
dev.to/vishalendu/c...

#Java #GC #Garbagecollection #G1GC #ZGC #Shenandoah #performance #performanceengineering
Comparing Java 23 GC types
So this is an article in response to the following...
dev.to
December 21, 2024 at 4:50 PM
あっ、 富士通の田端さんのセッションも私の裏だった 😭
G1GCの話は聞きたかったんだけどなぁ...
#jjug #jjug_ccc #java

sessionize.com/api/v2/x15nr...
sessionize.com
May 26, 2026 at 11:44 AM
In case you want to see what the final video I watched on YouTube was. It was this. Funny video, I had enjoyed it thoroughly.
www.youtube.com/watch?v=g1Gc...
Explaining Touhou To Someone Who Only Knows Touhou Through Memes
YouTube video by Kokoriko
www.youtube.com
August 13, 2025 at 10:46 AM
The biggest challenge was Gradle OutOfMemoryErrors in CI. The biggest wins were increasing JVM heap to 6GB, limiting Gradle workers, switching to G1GC, and disabling the daemon. This took builds from ~70% failures to 100% success
January 31, 2026 at 11:37 AM
Я изнасиловала свой макбук. Энивей результаты изнасилования:

- 71 FPS (потом дожала до 144 фпс)
- Жор 3-4 ГБ оперативы (G1GC)

НА МОДПАКЕ С 250+ МОДОВ НА ВЕРСИИ 1.20.1. Блять, да у некоторых ДЕСКТОПЫ эту сборку не вытягивают. Я на ПК играю - выделяю 12 гигов на игру и все равно мало. Тут 3-4 гига..
August 28, 2026 at 2:43 PM
Для технически грамотных людей:

Да, я в курсе, что при использовании G1GC эти 10 ГБ оперативы (-Xmx10G) не жрутся сразу, а просто резервируются. Как я поняла, суть в том, что ZGC эффективнее утилизирует мусорные объекты в памяти, а потому отпадает необходимость резервировать огромные куски памяти
August 8, 2026 at 1:18 PM
Trump Divorce Cold Open - SNL
YouTube video by Saturday Night Live
youtube.com
July 30, 2025 at 6:30 PM
Trump Divorce Cold Open - SNL
YouTube video by Saturday Night Live
youtube.com
August 9, 2025 at 8:03 PM
www.youtube.com/watch?v=g1Gc...

막내력이미쳣네
[NCT DREAM 천러, 지성] 천지 코어가 궁금하면 들어오세요
YouTube video by 드림에디터
www.youtube.com
May 23, 2026 at 7:30 PM
Last Friday, Utku kicked off our Scala month with a deep dive into ZGC vs. G1GC! He explored their pros, cons, and impact on Scala performance.
Check out the blog to help you make the right GC choice!
🔗 blog.lunatech.com/posts/2025-0...
#Lunatech #ScalaMonth #TechTalks
February 10, 2025 at 9:45 AM
На заметку: Java 21 + сборщик мусора ZGC вместо G1GC. Жор оперативы сервера Minecraft 1.20.1 с 208 модами (включая тяжелые GregTech, Ad Astra, TerraFirmaCraft, Create + аддоны) упал с 10 ГБ до 1.72 ГБ с одним игроком и около 2.8 ГБ если этот один игрок начнет бешено грузить/генерировать чанки.
August 8, 2026 at 1:14 PM
Microsoft Build of #OpenJDK 25 latest update includes a new G1GC feature:

- Automatic uncommitting of unused G1 heap regions during idle periods to reduce memory footprint

It is the best #OpenJDK 25 implementation for containerized and cloud environments.

devblogs.microsoft.com/java/java-op...
Java OpenJDK April 2026 Patch & Security Update - Microsoft for Java Developers
Hello Java customers! We are happy to announce the latest April 2026 patch & security update release for the Microsoft Build of OpenJDK. Check our release notes page for details on fixes and enhanceme...
devblogs.microsoft.com
May 5, 2026 at 4:22 PM
Ooh finally going back and remodelling classic mobs! Also nice change from G1GC to ZGC, less things I need to tweak on new installs the better
January 7, 2026 at 3:16 PM
Learn how to optimize JVM for Kubernetes by configuring thread pools, selecting garbage collectors (ZGC/G1GC), and setting heap size with `-XX:MaxRAMPercentage` for efficient resource use and guaranteed QoS

➤ https://ku.bz/8QJCDNfml
July 5, 2025 at 3:11 PM
jdk 27 targets vector api, compact headers, g1gc default. for data teams: simd support cuts transform latency, smaller object overhead means tighter memory, predictable gc pauses improve cluster stability. real operational wins.

#OpenSource #DataEngineering #DataStrategy
May 25, 2026 at 1:28 PM
Thanks Broadway!
Keanu Reeves & Alex Winter Tease Jamie Lloyd's 'Waiting For Godot'
www.youtube.com/watch?v=g1Gc...
Broadway.com
The most comprehensive source for Broadway Shows, Broadway Tickets, Off-Broadway, London theater information, Tickets, Gift Certificates, Videos, News & Features, Reviews, Photos.
Broadway.com
August 26, 2025 at 5:44 PM
Java 27 removes the app-freezing GC from cheap servers and cuts object memory 33% #GarbageCollection #Jvm #G1Gc
Java 27 removes the app-freezing GC from cheap servers and cuts object memory 33%
Java 27 makes G1 the mandatory garbage collector on every runtime — ending the Serial collector holdout on constrained hardware — and shrinks object headers from 96 to 64 bits. Both changes are automa
www.martincid.com
September 21, 2026 at 2:30 PM
Да, спасибо за подробное описание. Насколько я знаю, суть ZGC в том, что он чистит объекты в памяти сразу, как они освобождаются, а не ждет, когда накопится "критическое" количество объектов, чтобы разом вычистить, как делает G1GC, ну и, собственно, JVM не резервирует сразу кучу памяти заранее.
August 8, 2026 at 5:24 PM
🚀 Animado com o Java 24! A nova expansão tardia de barreiras no G1 reduz a sobrecarga da JVM, tornando o Java ainda melhor para apps em nuvem. Ao mover a expansão mais adiante no pipeline, otimizamos o desempenho e economizamos recursos. Fique ligado! #Java24 #G1GC #CloudComputing
February 22, 2025 at 3:42 PM
OK, we are conflating a couple of things: JVM as a platform/runtime and the Java language itself. For the JVM I'd say the biggest change were VirtualThreads and all related; in addition improvements to G1GC and new GCs like ZGC. And people are working on value classes and compact headers that…
November 19, 2024 at 10:28 PM
Xでソースコードが話題になっていますが、Javaの標準ライブラリのソースコードを淡々と読むだけのセッションを5/30の #jjug_ccc で行います。
まぁ、聞きに来ても仕事で役に立つわけでもないので、私のセッションよりも裏のG1GCの方が役に立つはず! #jjug

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jjug.doorkeeper.jp/events/196011
May 27, 2026 at 5:12 AM
GraalVM is now freely available with what were previously paid enterprise features inside Oracle GraalVM.
This includes G1GC and Profile Guided Optimization, which brings better performance and better resource efficiency (request/GB of memory).
This is awesome! https://t.co/2bb9a1h9El
November 26, 2024 at 12:02 PM