# ES 2.4 GC time % unmanageable. Any tip? **URL:** \ **Category:** Elasticsearch\ **Created:** [July 20, 2021, 7:44am UTC](https://discuss.elastic.co/t/es-2-4-gc-time-unmanageable-any-tip/279124 "2021-07-20T07:44:04Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![rschirin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rschirin/32/45283_2.png) [@rschirin](https://discuss.elastic.co/u/rschirin)\ **Post date:** [July 20, 2021, 7:44am UTC](https://discuss.elastic.co/t/es-2-4-gc-time-unmanageable-any-tip/279124/1 "2021-07-20T07:44:04Z")
Hey there, I am trying to find the sweet spot for my application. I got these results: _DATA nodes 8cpu-32gb ram with 16gb heap size and 8gb young heap size_ _GC time % is generally around 5% (this is in case the limit)_ _DATA nodes 8cpu-64gb ram with 16gb heap size and 8gb young heap size_ _GC time % is generally over 10%_ In the second scenario, I doubled up the DATA's ram to try to handles more events. Instead, I am able to process lower events because DATA resources are stressed by GC time %. All the surrounded details (input traffic, indices size, number of shards etc etc) are the same. I read several docs on blog and also somewhere else but I cannot find a way to understand correctly this behaviour. I just know that I should find a way to decrease that GC time % value. is there anyone that can help me? The ES version is so old, I know. I have another branch with latest one but values cannot be compared. ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [July 20, 2021, 8:26am UTC](https://discuss.elastic.co/t/es-2-4-gc-time-unmanageable-any-tip/279124/2 "2021-07-20T08:26:03Z")
What is the full output of the cluster stats API? Do you have any non-default cluster or JVM settings? ---
**Author:** ![rschirin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rschirin/32/45283_2.png) [@rschirin](https://discuss.elastic.co/u/rschirin)\ **Post date:** [July 20, 2021, 8:44am UTC](https://discuss.elastic.co/t/es-2-4-gc-time-unmanageable-any-tip/279124/3 "2021-07-20T08:44:59Z")
Cluster is composed by 3 simple MASTER and 3 DATA. No particular settings. Regarding JVM I am just specifying Xmx-Xms-Xmn I cannot post the \_stats output due to limited number of chars in the post 😢 ---
**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\ **Post date:** [July 20, 2021, 9:21am UTC](https://discuss.elastic.co/t/es-2-4-gc-time-unmanageable-any-tip/279124/4 "2021-07-20T09:21:32Z")
Then please make it available some other way, e.g. through a gist or using paste in or some similar tool. ---
**Author:** ![rschirin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rschirin/32/45283_2.png) [@rschirin](https://discuss.elastic.co/u/rschirin)\ **Post date:** [July 20, 2021, 9:37am UTC](https://discuss.elastic.co/t/es-2-4-gc-time-unmanageable-any-tip/279124/5 "2021-07-20T09:37:04Z")
\_stats [https://paste.in/l0AIC4](https://paste.in/l0AIC4) \_nodes/stats [https://paste.in/iXx0cw](https://paste.in/iXx0cw) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [August 17, 2021, 9:37am UTC](https://discuss.elastic.co/t/es-2-4-gc-time-unmanageable-any-tip/279124/6 "2021-08-17T09:37:30Z")
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