# Nodes Stats: disk\_service\_time

**URL:** <https://discuss.elastic.co/t/nodes-stats-disk-service-time/67179>\
**Category:** Elasticsearch\
**Created:** [November 25, 2016, 11:04am UTC](https://discuss.elastic.co/t/nodes-stats-disk-service-time/67179 "2016-11-25T11:04:27Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![larghir](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/larghir/32/61526_2.png) [@larghir](https://discuss.elastic.co/u/larghir)\
**Post date:** [November 25, 2016, 11:04am UTC](https://discuss.elastic.co/t/nodes-stats-disk-service-time/67179/1 "2016-11-25T11:04:27Z")

</div>

Hi,

debugging a performance problem on an Elasticsearch cluster (running Elasticsearch version 1.7.5) and I suspect that disk I/O might be the bottleneck (since CPU and memory are clearly not).  
I am monitoring the /\_nodes/stats metrics from all the nodes, and I noticed disk\_service\_time among the fs metrics.  
Can someone explain what this metric says precisely?

Thanks in advance

---

<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:** [December 23, 2016, 11:04am UTC](https://discuss.elastic.co/t/nodes-stats-disk-service-time/67179/2 "2016-12-23T11:04:33Z")

</div>

Closed on December 23, 2016, 11:04am UTC

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.