# Using G1GC in ES 7.7.0

**URL:** <https://discuss.elastic.co/t/using-g1gc-in-es-7-7-0/239547>\
**Category:** Elasticsearch\
**Tags:** elastic-stack-monitoring\
**Created:** [July 1, 2020, 10:01pm UTC](https://discuss.elastic.co/t/using-g1gc-in-es-7-7-0/239547 "2020-07-01T22:01:27Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![praveenmak](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/praveenmak/32/22708_2.png) [@praveenmak](https://discuss.elastic.co/u/praveenmak)\
**Post date:** [July 1, 2020, 10:01pm UTC](https://discuss.elastic.co/t/using-g1gc-in-es-7-7-0/239547/1 "2020-07-01T22:01:28Z")

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Hello Guys,

I am using ES 7.7.0

JDK is

> bin/java --version  
> openjdk 14 2020-03-17  
> OpenJDK Runtime Environment AdoptOpenJDK (build 14+36)  
> OpenJDK 64-Bit Server VM AdoptOpenJDK (build 14+36, mixed mode, sharing)

-Xms28g  
-Xmx28g  
10-:-XX:+UseG1GC  
10-:-XX:G1ReservePercent=25  
10-:-XX:InitiatingHeapOccupancyPercent=30  
-XX:+UnlockDiagnosticVMOptions  
-XX:+PrintCompressedOopsMode

I have 10 node cluster  
1 Co-ord node  
6 Data  
3 Master  
SSD's in all each 8 TB.  
RAM: 128GB  
CPU: 16 core  
Centos 7.0

My JVM graph

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/5/9/596edeb5980f8656cd4a9bcf84875ba141d0b083.png)

**JVM Heap keeps raising and it crashes the nodes.  
I have to restart the cluster every week. Please help!!!**

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<div class="post-metadata">

**Author:** ![praveenmak](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/praveenmak/32/22708_2.png) [@praveenmak](https://discuss.elastic.co/u/praveenmak)\
**Post date:** [July 7, 2020, 1:29pm UTC](https://discuss.elastic.co/t/using-g1gc-in-es-7-7-0/239547/2 "2020-07-07T13:29:33Z")

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Has anyone encountered this?

Please let me know

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<div class="post-metadata">

**Author:** ![praveenmak](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/praveenmak/32/22708_2.png) [@praveenmak](https://discuss.elastic.co/u/praveenmak)\
**Post date:** [July 8, 2020, 6:52pm UTC](https://discuss.elastic.co/t/using-g1gc-in-es-7-7-0/239547/3 "2020-07-08T18:52:02Z")

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Just holler. Any experts out there?

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 5, 2020, 6:52pm UTC](https://discuss.elastic.co/t/using-g1gc-in-es-7-7-0/239547/4 "2020-08-05T18:52:15Z")

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