# JVM Old gen will 100% used, as my ES long time running

**URL:** <https://discuss.elastic.co/t/jvm-old-gen-will-100-used-as-my-es-long-time-running/40809>\
**Category:** Elasticsearch\
**Created:** [February 3, 2016, 2:16am UTC](https://discuss.elastic.co/t/jvm-old-gen-will-100-used-as-my-es-long-time-running/40809 "2016-02-03T02:16:56Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![tianzongqi](https://avatars.discourse-cdn.com/v4/letter/t/a183cd/32.png) [@tianzongqi](https://discuss.elastic.co/u/tianzongqi)\
**Post date:** [February 3, 2016, 2:16am UTC](https://discuss.elastic.co/t/jvm-old-gen-will-100-used-as-my-es-long-time-running/40809/1 "2016-02-03T02:16:56Z")

</div>

I have set the properties:  
indices.fielddata.cache.size: 65%  
indices.breaker.fielddata.limit: 70%

but my old gen also can reach 100%, then frequent full gc . I should restart my ES cluster for the state.

any body know how to handle about this problem ? thank you !

---

<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:** [July 5, 2017, 11:19pm UTC](https://discuss.elastic.co/t/jvm-old-gen-will-100-used-as-my-es-long-time-running/40809/2 "2017-07-05T23:19:24Z")

</div>