# Where can I find info on the status of G1GC in Lucene and ES?

**URL:** <https://discuss.elastic.co/t/where-can-i-find-info-on-the-status-of-g1gc-in-lucene-and-es/149526>\
**Category:** Elasticsearch\
**Created:** [September 21, 2018, 10:56pm UTC](https://discuss.elastic.co/t/where-can-i-find-info-on-the-status-of-g1gc-in-lucene-and-es/149526 "2018-09-21T22:56:21Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![jeroen1](https://avatars.discourse-cdn.com/v4/letter/j/47e85d/32.png) [@jeroen1](https://discuss.elastic.co/u/jeroen1)\
**Post date:** [September 23, 2018, 7:20pm UTC](https://discuss.elastic.co/t/where-can-i-find-info-on-the-status-of-g1gc-in-lucene-and-es/149526/2 "2018-09-23T19:20:22Z")

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I'm running G1 on my - large heap & many CPU cores - production systems for quite some time. Did this after benchmarking on ES 6.0. G1 was significantly faster for my setup.

I'm also very interested in the status: no reply on my last question about this [Reasons for not using G1 GC?](https://discuss.elastic.co/t/reasons-for-not-using-g1-gc/110853). I cannot find a currently valid reason for not using G1. Especially interesting since G1 is the default CG for Java 9...

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