# Does this check the host in parallel?

**URL:** <https://discuss.elastic.co/t/does-this-check-the-host-in-parallel/203365>\
**Category:** Beats\
**Tags:** heartbeat\
**Created:** [October 14, 2019, 1:34am UTC](https://discuss.elastic.co/t/does-this-check-the-host-in-parallel/203365 "2019-10-14T01:34:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![111219](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/111219/32/55161_2.png) [@111219](https://discuss.elastic.co/u/111219)\
**Post date:** [October 14, 2019, 1:34am UTC](https://discuss.elastic.co/t/does-this-check-the-host-in-parallel/203365/1 "2019-10-14T01:34:58Z")

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I am wondering whether it is serial or parallel.

If it's parallel, I want to know how many things are processed at the same time.

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**Author:** ![Andrew\_Cholakian1](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/andrew_cholakian1/32/3612_2.png) [@Andrew\_Cholakian1](https://discuss.elastic.co/u/Andrew_Cholakian1)\
**Post date:** [October 14, 2019, 4:22pm UTC](https://discuss.elastic.co/t/does-this-check-the-host-in-parallel/203365/2 "2019-10-14T16:22:44Z")

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It is parallel and asynchronous. You can control this with the [limit](https://www.elastic.co/guide/en/beats/heartbeat/current/configuration-heartbeat-options.html#heartbeat-scheduler-limit) option.

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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:** [November 11, 2019, 4:22pm UTC](https://discuss.elastic.co/t/does-this-check-the-host-in-parallel/203365/3 "2019-11-11T16:22:44Z")

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