# Heap usage over time

**URL:** <https://discuss.elastic.co/t/heap-usage-over-time/135615>\
**Category:** Elasticsearch\
**Created:** [June 13, 2018, 2:45am UTC](https://discuss.elastic.co/t/heap-usage-over-time/135615 "2018-06-13T02:45:52Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![br14nb0](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/br14nb0/32/28814_2.png) [@br14nb0](https://discuss.elastic.co/u/br14nb0)\
**Post date:** [June 13, 2018, 2:45am UTC](https://discuss.elastic.co/t/heap-usage-over-time/135615/1 "2018-06-13T02:45:52Z")

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What happened in that period of time which Heap usage decreased so much ? Thanks

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/7/e/7e86dfd0dc611bfa48ae5e279104f818ab404c9f.png)

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**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:** [June 13, 2018, 5:20am UTC](https://discuss.elastic.co/t/heap-usage-over-time/135615/2 "2018-06-13T05:20:44Z")

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That pattern is normal then garbage collection occurs. Having a nice saw-tooth pattern for heap usage is healthy and expected.

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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 11, 2018, 5:20am UTC](https://discuss.elastic.co/t/heap-usage-over-time/135615/3 "2018-07-11T05:20:48Z")

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