# Disabling swapiness

**URL:** <https://discuss.elastic.co/t/disabling-swapiness/29835>\
**Category:** Elasticsearch\
**Created:** [September 23, 2015, 11:33am UTC](https://discuss.elastic.co/t/disabling-swapiness/29835 "2015-09-23T11:33:57Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Phani\_Nadiminti](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/phani_nadiminti/32/45381_2.png) [@Phani\_Nadiminti](https://discuss.elastic.co/u/Phani_Nadiminti)\
**Post date:** [September 23, 2015, 11:33am UTC](https://discuss.elastic.co/t/disabling-swapiness/29835/1 "2015-09-23T11:33:57Z")

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Hi All,

All my PROD nodes are dedicated ES servers each and running under elasticsearch user

do I need to disable swapiness in order to prevent OOM killer issues?

Thanks,  
phani

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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:** [September 23, 2015, 9:51pm UTC](https://discuss.elastic.co/t/disabling-swapiness/29835/2 "2015-09-23T21:51:28Z")

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We recommend disabling swap - [https://www.elastic.co/guide/en/elasticsearch/guide/current/heap-sizing.html#\_swapping\_is\_the\_death\_of\_performance](https://www.elastic.co/guide/en/elasticsearch/guide/current/heap-sizing.html#_swapping_is_the_death_of_performance).

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**Author:** ![Phani\_Nadiminti](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/phani_nadiminti/32/45381_2.png) [@Phani\_Nadiminti](https://discuss.elastic.co/u/Phani_Nadiminti)\
**Post date:** [October 28, 2015, 11:20am UTC](https://discuss.elastic.co/t/disabling-swapiness/29835/3 "2015-10-28T11:20:26Z")

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Hi Mark,

Thank you for suggestion i have disabled swapiness on my production linux boxes. ES is suggesting any of the following methods in the following link so i did first one disabling swapiness completely on linux boxes.  
[https://www.elastic.co/guide/en/elasticsearch/reference/1.4/setup-configuration.html](https://www.elastic.co/guide/en/elasticsearch/reference/1.4/setup-configuration.html)

I enabled bootstrap "bootstrap.mlockall: true" too. can I disable this one since i already disabled swapiness on prod linux boxes or do we need to enabled this bootstrap too? please suggest me on this.

Thank & Regards,  
phani

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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:** [October 28, 2015, 9:33pm UTC](https://discuss.elastic.co/t/disabling-swapiness/29835/4 "2015-10-28T21:33:16Z")

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It doesn't really matter.

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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, 11:42pm UTC](https://discuss.elastic.co/t/disabling-swapiness/29835/5 "2017-07-05T23:42:00Z")

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