# Thread Pool Behaviour

**URL:** <https://forums.percona.com/t/thread-pool-behaviour/34045>\
**Category:** Percona Server for MySQL 8.0\
**Created:** [October 1, 2024, 5:24am UTC](https://forums.percona.com/t/thread-pool-behaviour/34045 "2024-10-01T05:24:21Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Senthil](https://avatars.discourse-cdn.com/v4/letter/s/c89c15/32.png) [@Senthil](https://forums.percona.com/u/Senthil)\
**Post date:** [October 1, 2024, 5:24am UTC](https://forums.percona.com/t/thread-pool-behaviour/34045/1 "2024-10-01T05:24:21Z")

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Hi team,  
I am running with thead pool enabled and want to verify that only thread\_pool\_size connections are being made in the backend. Running “show processlist” is not helpful here as it just lists all the connections made by the clients. Is there any other command I can run to verify the actual number of connections in the backend?  
Also, when there are more connections than the configured thread\_pool\_size, what happens to these additional connections? Are they kept in waiting?

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<div class="post-metadata">

**Author:** ![matthewb](https://sea1.discourse-cdn.com/flex019/user_avatar/forums.percona.com/matthewb/32/34_2.png) [@matthewb](https://forums.percona.com/u/matthewb)\
**Post date:** [October 1, 2024, 1:28pm UTC](https://forums.percona.com/t/thread-pool-behaviour/34045/2 "2024-10-01T13:28:31Z")

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Closing due to similar conversations in other threads.