# How to measure an 'Empty' operation

**URL:** <https://discuss.elastic.co/t/how-to-measure-an-empty-operation/195122>\
**Category:** Elasticsearch\
**Tags:** rally\
**Created:** [August 14, 2019, 1:02am UTC](https://discuss.elastic.co/t/how-to-measure-an-empty-operation/195122 "2019-08-14T01:02:44Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![dliappis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dliappis/32/56174_2.png) [@dliappis](https://discuss.elastic.co/u/dliappis)\
**Post date:** [August 14, 2019, 8:06am UTC](https://discuss.elastic.co/t/how-to-measure-an-empty-operation/195122/5 "2019-08-14T08:06:41Z")

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Also please check the documentation for [custom parameter sources](https://esrally.readthedocs.io/en/stable/adding_tracks.html?highlight=custom%20parameter%20sources#custom-parameter-sources).

There is a similar (older) discussion containing more guidance regarding the use of a custom parameter source for updates in [this topic](https://discuss.elastic.co/t/does-rally-support-benchmarking-partial-updates-doc-as-upsert/101081/2).

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_[View the full topic](https://discuss.elastic.co/t/how-to-measure-an-empty-operation/195122)._