# Web API - Diagnostics/Threads

**URL:** <https://forum.inductiveautomation.com/t/web-api-diagnostics-threads/29643>\
**Category:** Ignition\
**Created:** [November 4, 2019, 4:19pm UTC](https://forum.inductiveautomation.com/t/web-api-diagnostics-threads/29643 "2019-11-04T16:19:26Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![plarochelle](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/plarochelle/32/29608_2.png) [@plarochelle](https://forum.inductiveautomation.com/u/plarochelle)\
**Post date:** [November 4, 2019, 4:19pm UTC](https://forum.inductiveautomation.com/t/web-api-diagnostics-threads/29643/1 "2019-11-04T16:19:26Z")

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Trying to troubleshot some resource issues on a couple of Ignition gateways and in the threads section of the diagnostic page on the gateway “Web API” is using 6% of the CPU. This system has ~ 100 Java Web Start clients hooked up to it - is that what the Web API is indicative of? On another system with only 15 clients the Web API is utilizing 3% of CPU.

Thanks,  
Pete

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [November 4, 2019, 4:23pm UTC](https://forum.inductiveautomation.com/t/web-api-diagnostics-threads/29643/2 "2019-11-04T16:23:16Z")

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“Web API” represents most all the calls to various HTTP endpoints on the Ignition gateway, including those made by the status pages. I don’t think it includes Vision Clients at all.

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**Author:** ![plarochelle](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/plarochelle/32/29608_2.png) [@plarochelle](https://forum.inductiveautomation.com/u/plarochelle)\
**Post date:** [November 4, 2019, 4:28pm UTC](https://forum.inductiveautomation.com/t/web-api-diagnostics-threads/29643/3 "2019-11-04T16:28:46Z")

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Thanks for the quick response! That being said would you think that 6% is high? This is a system with 100K tags and 50+ projects, 70 device connections and a lot of database transactions and the Web API is using more CPU than any other thread.

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [November 4, 2019, 4:29pm UTC](https://forum.inductiveautomation.com/t/web-api-diagnostics-threads/29643/4 "2019-11-04T16:29:54Z")

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Some of the status pages, like the thread viewer and log viewer in particular, are resource heavy. Maybe there’s one or more of those left open somewhere. I wouldn’t really worry about it unless it’s negatively affecting your Ignition gateway in other ways though.