# Is there a way to easily evaluate theoretically the necessary heap size for Logstash?

**URL:** <https://discuss.elastic.co/t/is-there-a-way-to-easily-evaluate-theoretically-the-necessary-heap-size-for-logstash/133817>\
**Category:** Logstash\
**Created:** [May 30, 2018, 8:10am UTC](https://discuss.elastic.co/t/is-there-a-way-to-easily-evaluate-theoretically-the-necessary-heap-size-for-logstash/133817 "2018-05-30T08:10:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dr01](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dr01/32/8482_2.png) [@dr01](https://discuss.elastic.co/u/dr01)\
**Post date:** [May 30, 2018, 8:10am UTC](https://discuss.elastic.co/t/is-there-a-way-to-easily-evaluate-theoretically-the-necessary-heap-size-for-logstash/133817/1 "2018-05-30T08:10:13Z")

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Hi all,

Is there a way to easily evaluate theoretically the necessary heap size for Logstash, based - for instance - on payload size and number of ingested logs per second?

Thanks.

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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:** [June 27, 2018, 8:10am UTC](https://discuss.elastic.co/t/is-there-a-way-to-easily-evaluate-theoretically-the-necessary-heap-size-for-logstash/133817/2 "2018-06-27T08:10:14Z")

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