# Can I find out why is my elastic node has a high read rate every 12 hours **URL:** \ **Category:** Elasticsearch\ **Created:** [July 12, 2023, 9:23am UTC](https://discuss.elastic.co/t/can-i-find-out-why-is-my-elastic-node-has-a-high-read-rate-every-12-hours/338194 "2023-07-12T09:23:50Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![JasonREC](https://avatars.discourse-cdn.com/v4/letter/j/858c86/32.png) [@JasonREC](https://discuss.elastic.co/u/JasonREC)\ **Post date:** [July 12, 2023, 9:23am UTC](https://discuss.elastic.co/t/can-i-find-out-why-is-my-elastic-node-has-a-high-read-rate-every-12-hours/338194/1 "2023-07-12T09:23:50Z")
Hi, Above is my elastic 3 days IO rate chart, it does have a special pattern between every 12 hours, the read will reach to a peak, but I am not sure what is the thing that can potentially cause this happens... is there a way to find it out? currently, I have set up couple watchers, but it runs per 10mins, and I did not set anything related to read/search per 12 hours . ![rate](https://us1.discourse-cdn.com/elastic/original/3X/2/0/20fb255c300dc5c5d59868b6ae2a315aa94c90a1.png) ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [July 12, 2023, 12:11pm UTC](https://discuss.elastic.co/t/can-i-find-out-why-is-my-elastic-node-has-a-high-read-rate-every-12-hours/338194/2 "2023-07-12T12:11:22Z")
It might be the merge segments which triggers that? ---
**Author:** ![JasonREC](https://avatars.discourse-cdn.com/v4/letter/j/858c86/32.png) [@JasonREC](https://discuss.elastic.co/u/JasonREC)\ **Post date:** [July 13, 2023, 4:28am UTC](https://discuss.elastic.co/t/can-i-find-out-why-is-my-elastic-node-has-a-high-read-rate-every-12-hours/338194/3 "2023-07-13T04:28:50Z")
@dadoonet Thanks for the reply. I capture my segment count chart picure below, but seems like the time does not match... when the segment count has a huge drop, the read rate andrthe write rate is not very high, ![se-count](https://us1.discourse-cdn.com/elastic/original/3X/a/2/a27582502322f03f6c6257cc962437e2bf3e0e95.png) ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [July 17, 2023, 9:32am UTC](https://discuss.elastic.co/t/can-i-find-out-why-is-my-elastic-node-has-a-high-read-rate-every-12-hours/338194/4 "2023-07-17T09:32:30Z")
Do you have snapshots? Where is this running? On [cloud.elastic.co](http://cloud.elastic.co)? ---
**Author:** ![JasonREC](https://avatars.discourse-cdn.com/v4/letter/j/858c86/32.png) [@JasonREC](https://discuss.elastic.co/u/JasonREC)\ **Post date:** [July 18, 2023, 1:42am UTC](https://discuss.elastic.co/t/can-i-find-out-why-is-my-elastic-node-has-a-high-read-rate-every-12-hours/338194/5 "2023-07-18T01:42:29Z")
I think currently I have 45206 snapshots, and my elastic service is running on cloud ![snap2](https://us1.discourse-cdn.com/elastic/original/3X/d/d/dda5cf356d03bf8a55038218361b17d2befabdbc.png) ![snap1](https://us1.discourse-cdn.com/elastic/original/3X/6/8/68e8c08a2888adae2d5cc38bd73d833a9ae40def.png) ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [July 18, 2023, 7:34am UTC](https://discuss.elastic.co/t/can-i-find-out-why-is-my-elastic-node-has-a-high-read-rate-every-12-hours/338194/6 "2023-07-18T07:34:08Z")
What is the output of: ```auto GET / GET /_cat/nodes?v GET /_cat/health?v GET /_cat/indices?v ``` ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [August 15, 2023, 7:35am UTC](https://discuss.elastic.co/t/can-i-find-out-why-is-my-elastic-node-has-a-high-read-rate-every-12-hours/338194/7 "2023-08-15T07:35:02Z")
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