# Two opc-ua-executor threads consuming high amounts of CPU

**URL:** <https://forum.inductiveautomation.com/t/two-opc-ua-executor-threads-consuming-high-amounts-of-cpu/35946>\
**Category:** Ignition\
**Created:** [June 23, 2020, 8:43pm UTC](https://forum.inductiveautomation.com/t/two-opc-ua-executor-threads-consuming-high-amounts-of-cpu/35946 "2020-06-23T20:43:09Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![jordan.richardson](https://avatars.discourse-cdn.com/v4/letter/j/94ad74/32.png) [@jordan.richardson](https://forum.inductiveautomation.com/u/jordan.richardson)\
**Post date:** [June 23, 2020, 8:43pm UTC](https://forum.inductiveautomation.com/t/two-opc-ua-executor-threads-consuming-high-amounts-of-cpu/35946/1 "2020-06-23T20:43:10Z")

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Gateway version 8.0.7

My issue appears to be rather odd in the fact that I have two opc-ua-executor threads consuming nearly 80% of my CPU at any given moment. It has not been always been like this, and our usage is usually at about 20-30% overall. The odd part is that I am not seeing a large stack of errors like you’d expect. All of my OPC devices (55) are connected as well as the OPC servers (5). I have uploaded the latest thread dump during high usage. [mfgsiignition\_thread\_dump20200623-162138.txt](https://forum.inductiveautomation.com/uploads/short-url/bbdlwDEHCFCkbbXppN8muoQ9bf.txt) (342.5 KB) Any help or directions are very much appreciated!

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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:** [June 23, 2020, 8:45pm UTC](https://forum.inductiveautomation.com/t/two-opc-ua-executor-threads-consuming-high-amounts-of-cpu/35946/2 "2020-06-23T20:45:06Z")

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I think this was fixed in 8.0.13.

The release note mentions a different thread but the stack trace is the same.

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**Author:** ![jordan.richardson](https://avatars.discourse-cdn.com/v4/letter/j/94ad74/32.png) [@jordan.richardson](https://forum.inductiveautomation.com/u/jordan.richardson)\
**Post date:** [June 23, 2020, 8:51pm UTC](https://forum.inductiveautomation.com/t/two-opc-ua-executor-threads-consuming-high-amounts-of-cpu/35946/3 "2020-06-23T20:51:07Z")

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I’ll look into installing this on our test server to make sure everything goes alright. I know it’s supposed to be a minor update, but I usually only get a once in a blue moon shot to take our server out of production because it is running a lot of our comms for automated systems. Thanks Kevin!

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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:** [June 23, 2020, 8:53pm UTC](https://forum.inductiveautomation.com/t/two-opc-ua-executor-threads-consuming-high-amounts-of-cpu/35946/4 "2020-06-23T20:53:07Z")

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Always a good idea to test upgrades in a staging environment.

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**Author:** ![jordan.richardson](https://avatars.discourse-cdn.com/v4/letter/j/94ad74/32.png) [@jordan.richardson](https://forum.inductiveautomation.com/u/jordan.richardson)\
**Post date:** [June 30, 2020, 1:34pm UTC](https://forum.inductiveautomation.com/t/two-opc-ua-executor-threads-consuming-high-amounts-of-cpu/35946/5 "2020-06-30T13:34:46Z")

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Updated to 8.0.14 on 6/26. So far so good! CPU usage has stayed well below 20% since. Our RAM usage even looks a lot cleaner too. Solution Verified!