# High IOwiats on ELK Linux Instance

**URL:** <https://discuss.elastic.co/t/high-iowiats-on-elk-linux-instance/309597>\
**Category:** Elasticsearch\
**Created:** [July 14, 2022, 2:57am UTC](https://discuss.elastic.co/t/high-iowiats-on-elk-linux-instance/309597 "2022-07-14T02:57:37Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![AmarKolhapuri](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/amarkolhapuri/32/102372_2.png) [@AmarKolhapuri](https://discuss.elastic.co/u/AmarKolhapuri)\
**Post date:** [July 14, 2022, 2:57am UTC](https://discuss.elastic.co/t/high-iowiats-on-elk-linux-instance/309597/1 "2022-07-14T02:57:37Z")

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Hi All,

We have a Weblogic server and other applications/servers(HTTP server) that write logs to the Logs mount. In order to monitor the performance of the application, this mount is shared with the ELK stack.

After restarting ELK, we see high IOwiats on all Application Server instances where the /log mount is shared. Furthermore, ELK Linux instances have high IOwiat around the same time of restart.

ELK dockers are running on OEL 7.x ,16 core CPU and 31 GB memory

Elasticsearch is 3 node cluster .

logs mount is NFS mount

Is there a need to tune the ELK stack or how can we overcome this problem.

Thanks  
Ak

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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 14, 2022, 8:34am UTC](https://discuss.elastic.co/t/high-iowiats-on-elk-linux-instance/309597/2 "2022-07-14T08:34:39Z")

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Elasticsearch can be very I/O intensive and generally require fast storage in order to work well. Although it may [be possible to run Elasticsearch on NFS](https://www.elastic.co/guide/en/elasticsearch/reference/8.3/modules-node.html#data-path) it is generally not recommended as it can be very slow and limit performance. If you are indexing a lot of data [it is recommended to use as fast storage as possible](https://www.elastic.co/guide/en/elasticsearch/reference/8.3/tune-for-indexing-speed.html#_use_faster_hardware).

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<div class="post-metadata">

**Author:** ![AmarKolhapuri](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/amarkolhapuri/32/102372_2.png) [@AmarKolhapuri](https://discuss.elastic.co/u/AmarKolhapuri)\
**Post date:** [July 16, 2022, 12:34am UTC](https://discuss.elastic.co/t/high-iowiats-on-elk-linux-instance/309597/3 "2022-07-16T00:34:23Z")

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Thank you for your prompt response.

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 13, 2022, 12:34am UTC](https://discuss.elastic.co/t/high-iowiats-on-elk-linux-instance/309597/4 "2022-08-13T00:34:51Z")

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