# Performance dropping every 10 min, is it GC?

**URL:** <https://discuss.elastic.co/t/performance-dropping-every-10-min-is-it-gc/39740>\
**Category:** Elasticsearch\
**Created:** [January 21, 2016, 8:31am UTC](https://discuss.elastic.co/t/performance-dropping-every-10-min-is-it-gc/39740 "2016-01-21T08:31:46Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![alienmind](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alienmind/32/10799_2.png) [@alienmind](https://discuss.elastic.co/u/alienmind)\
**Post date:** [January 21, 2016, 8:31am UTC](https://discuss.elastic.co/t/performance-dropping-every-10-min-is-it-gc/39740/1 "2016-01-21T08:31:47Z")

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Hi

Sorry for the noob post, I'm diving into ES and runing a preliminary test. I can see a consistent performance drop every 10 minutes in both indexing and searching (monitoring with marvel). Server has 32GB RAM / 16 GB Heap for ES. No other settings differ from defaults. Can I presume is this the GC?

 ![](https://us1.discourse-cdn.com/elastic/original/2X/1/137929419dc5cc0e8995e69c7f2102db18f5f2b9.png)

Is there a way to monitor when the GC is happening? Any other possible explanation?

PS: Centos 7.1, SAN disk, kvm virtualized environment in a dedicated server, no other processes running.

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [January 21, 2016, 8:54am UTC](https://discuss.elastic.co/t/performance-dropping-every-10-min-is-it-gc/39740/2 "2016-01-21T08:54:11Z")

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Check your logs, it'll state if it's GC.

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**Author:** ![alienmind](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/alienmind/32/10799_2.png) [@alienmind](https://discuss.elastic.co/u/alienmind)\
**Post date:** [January 21, 2016, 9:37am UTC](https://discuss.elastic.co/t/performance-dropping-every-10-min-is-it-gc/39740/3 "2016-01-21T09:37:41Z")

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I can't see any clue that GC is happening in the logs.

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [January 21, 2016, 9:41am UTC](https://discuss.elastic.co/t/performance-dropping-every-10-min-is-it-gc/39740/4 "2016-01-21T09:41:12Z")

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Then that's not it 🙂

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**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, 11:22pm UTC](https://discuss.elastic.co/t/performance-dropping-every-10-min-is-it-gc/39740/5 "2017-07-05T23:22:38Z")

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