# How to count service-down with formula KQL

**URL:** <https://discuss.elastic.co/t/how-to-count-service-down-with-formula-kql/288887>\
**Category:** Synthetics\
**Created:** [November 10, 2021, 12:25pm UTC](https://discuss.elastic.co/t/how-to-count-service-down-with-formula-kql/288887 "2021-11-10T12:25:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![rschirin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rschirin/32/45283_2.png) [@rschirin](https://discuss.elastic.co/u/rschirin)\
**Post date:** [November 10, 2021, 12:25pm UTC](https://discuss.elastic.co/t/how-to-count-service-down-with-formula-kql/288887/1 "2021-11-10T12:25:27Z")

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Hey there,  
I am trying to collect monitor event with timeout reached. Heartbeat, according with [official docs](https://www.elastic.co/guide/en/beats/heartbeat/6.8/configuration-heartbeat-options.html#monitor-timeout), will create a service-down.

Is there a way to count them?  
Something like:

`count(kql='http.response.status_code = empty') / count()`

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<div class="post-metadata">

**Author:** ![rschirin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rschirin/32/45283_2.png) [@rschirin](https://discuss.elastic.co/u/rschirin)\
**Post date:** [November 10, 2021, 4:06pm UTC](https://discuss.elastic.co/t/how-to-count-service-down-with-formula-kql/288887/2 "2021-11-10T16:06:59Z")

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solution:  
`count(kql='NOT http.response.status_code: *') / count()`

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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:** [December 4, 2021, 4:07pm UTC](https://discuss.elastic.co/t/how-to-count-service-down-with-formula-kql/288887/3 "2021-12-04T16:07:21Z")

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