# Question about latency and response time

**URL:** <https://discuss.elastic.co/t/question-about-latency-and-response-time/290753>\
**Category:** Elasticsearch\
**Tags:** elastic-stack-monitoring\
**Created:** [December 2, 2021, 10:56am UTC](https://discuss.elastic.co/t/question-about-latency-and-response-time/290753 "2021-12-02T10:56:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ain\_Ryushika](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ain_ryushika/32/77273_2.png) [@Ain\_Ryushika](https://discuss.elastic.co/u/Ain_Ryushika)\
**Post date:** [December 2, 2021, 10:56am UTC](https://discuss.elastic.co/t/question-about-latency-and-response-time/290753/1 "2021-12-02T10:56:53Z")

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Hi, I have 2 question regarding latency and response time in Elasticsearch.

1. Why on different monitoring clients there are different response time?

For example in Kibana average request time is 700ms:

 ![kibana](https://us1.discourse-cdn.com/elastic/original/3X/e/d/ed90fe672669e986ac29eb35d7de075816b216f4.png)

In Graphana average request time is about ~300-500ms:

 ![graphana](https://us1.discourse-cdn.com/elastic/original/3X/4/1/41250eae580be610dbb138d20ec33c6febc49de6.png)

In Dynatrace it's about 100-150ms, though I'm not sure if its measure it correctly:

 ![dynatrace](https://us1.discourse-cdn.com/elastic/original/3X/8/f/8f5445de0e3b48e1a1be0ff4abc1a32044c69fcb.png)

1. Why response time suddenly changed?

We've average response time in a cluster about 400ms, but after the new mapping update (we added 3 new fields), response time decreased to 100-250 ms, and kept it that way throughout the day.

 ![decreased](https://us1.discourse-cdn.com/elastic/original/3X/4/d/4de9fc6173614906e5c81a2037a64e73dc56e0d9.png)

The next day, the response time increased again

 ![increased](https://us1.discourse-cdn.com/elastic/original/3X/b/8/b88f4563feeff76968bca04a241b4bc46c765f8f.png)

What could cause a decrease in response time after updating the mapping? And why did the response time rise back?

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:** [December 30, 2021, 10:57am UTC](https://discuss.elastic.co/t/question-about-latency-and-response-time/290753/2 "2021-12-30T10:57:07Z")

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