# Is this normal seeing JVM Heap Zigzag chart

**URL:** <https://discuss.elastic.co/t/is-this-normal-seeing-jvm-heap-zigzag-chart/139215>\
**Category:** Elasticsearch\
**Created:** [July 9, 2018, 4:52pm UTC](https://discuss.elastic.co/t/is-this-normal-seeing-jvm-heap-zigzag-chart/139215 "2018-07-09T16:52:52Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![saad](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/saad/32/17214_2.png) [@saad](https://discuss.elastic.co/u/saad)\
**Post date:** [July 9, 2018, 4:52pm UTC](https://discuss.elastic.co/t/is-this-normal-seeing-jvm-heap-zigzag-chart/139215/1 "2018-07-09T16:52:53Z")

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Hi,

I have cluster of elasticsearch and the assigned Heap is 10GB. we are using 6.3 elasticsearch version.  
I am seeing the JVM heap Chart in the monoritng looks like Zigzag chart groing from about 750MB to 7.5GB gradually and then goes down directly back to 7.5GB.

Is this normal JVM Heap behavior ??

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/7/d/7d5ef6dfdb1d047432a571c8a3b19eee07b181c3.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:** [July 9, 2018, 5:32pm UTC](https://discuss.elastic.co/t/is-this-normal-seeing-jvm-heap-zigzag-chart/139215/2 "2018-07-09T17:32:16Z")

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Yes, that is normal and a very healthy pattern.

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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:** [August 6, 2018, 5:32pm UTC](https://discuss.elastic.co/t/is-this-normal-seeing-jvm-heap-zigzag-chart/139215/3 "2018-08-06T17:32:20Z")

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