# Gateway High CPU Usage

**URL:** <https://forum.inductiveautomation.com/t/gateway-high-cpu-usage/8180>\
**Category:** Ignition\
**Created:** [March 19, 2014, 10:04pm UTC](https://forum.inductiveautomation.com/t/gateway-high-cpu-usage/8180 "2014-03-19T22:04:30Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![jmartell](https://avatars.discourse-cdn.com/v4/letter/j/779978/32.png) [@jmartell](https://forum.inductiveautomation.com/u/jmartell)\
**Post date:** [March 19, 2014, 10:04pm UTC](https://forum.inductiveautomation.com/t/gateway-high-cpu-usage/8180/1 "2014-03-19T22:04:30Z")

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I am having a problem with 1 of a redundant pair of servers. The CPU usage has shot up to \> 90%. I have checked out the resource monitor on the server and confirmed that Java is the only process consuming any measurable amount of resources.

Checking the console on the gateway shows that the only threads using a significant amount of resources are two threads: http-8088-1 & http-8088-10

I have had to restart the gateway to restore functionality so all I have is a couple of screen shots and a thread dump file.

[attachment=0]Thread CPU Usage - Detail.png[/attachment]

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**Author:** ![dave.fogle](https://avatars.discourse-cdn.com/v4/letter/d/43a26b/32.png) [@dave.fogle](https://forum.inductiveautomation.com/u/dave.fogle)\
**Post date:** [March 20, 2014, 4:07pm UTC](https://forum.inductiveautomation.com/t/gateway-high-cpu-usage/8180/2 "2014-03-20T16:07:38Z")

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What version of Ignition are you currently running?

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**Author:** ![jmartell](https://avatars.discourse-cdn.com/v4/letter/j/779978/32.png) [@jmartell](https://forum.inductiveautomation.com/u/jmartell)\
**Post date:** [March 24, 2014, 9:54pm UTC](https://forum.inductiveautomation.com/t/gateway-high-cpu-usage/8180/3 "2014-03-24T21:54:43Z")

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Currently we are running 7.5.10. Both servers are running windows server 2008 r2.

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**Author:** ![Colby.Clegg](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/colby.clegg/32/3282_2.png) [@Colby.Clegg](https://forum.inductiveautomation.com/u/Colby.Clegg)\
**Post date:** [March 25, 2014, 8:58pm UTC](https://forum.inductiveautomation.com/t/gateway-high-cpu-usage/8180/4 "2014-03-25T20:58:53Z")

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Hi,

This appears to be an issue that has been fixed for 7.5.12. You can download the RC from the “early access” section of the downloads. The final should be released within another 2 weeks.

The problem comes from having the same tag defined multiple times in a tag history query. If you can track down where that is happening, you can avoid the issue for now. Otherwise, installing 7.5.12 is the easiest way to go.

Once it starts happening, unfortunately only restarting the gateway will help.

Regards,