# Java High CPU usage

**URL:** <https://forum.inductiveautomation.com/t/java-high-cpu-usage/75931>\
**Category:** General Discussion\
**Tags:** ignition80\
**Created:** [July 5, 2023, 11:53am UTC](https://forum.inductiveautomation.com/t/java-high-cpu-usage/75931 "2023-07-05T11:53:45Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![thomas.hauptman](https://avatars.discourse-cdn.com/v4/letter/t/439d5e/32.png) [@thomas.hauptman](https://forum.inductiveautomation.com/u/thomas.hauptman)\
**Post date:** [July 5, 2023, 11:53am UTC](https://forum.inductiveautomation.com/t/java-high-cpu-usage/75931/1 "2023-07-05T11:53:45Z")

</div>

Hi,

I have a problem with high CPU usage on gateway. Every hour, at the same time, a process (named HttlClient-1-Worker-8 or somethin similar) is added to the threads that consumes approximately 20-25% of the processor. Eventually, the gateway stop working due to 100% CPU usage. If I restart the whole gateway, it works normally for an hour, until a new process is added.  
I am attaching a thread dump in the attachment for easier debugging.

Thanks for all your help in advance

[Ignition-DESKTOP-D9RHR9P\_thread\_dump20230705-131516.txt](https://forum.inductiveautomation.com/uploads/short-url/4oD2j8zDXt2iNRcPyKMs8dz11ga.txt) (98.4 KB)

---

<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [July 5, 2023, 12:24pm UTC](https://forum.inductiveautomation.com/t/java-high-cpu-usage/75931/2 "2023-07-05T12:24:53Z")

</div>

Huh. interesting. Those all appear to be SSL connections spinning. Does your IT do an hourly probe/scan of your network? It might be triggering an SSL bug. You should contact support.

---

<div class="post-metadata">

**Author:** ![thomas.hauptman](https://avatars.discourse-cdn.com/v4/letter/t/439d5e/32.png) [@thomas.hauptman](https://forum.inductiveautomation.com/u/thomas.hauptman)\
**Post date:** [July 20, 2023, 5:48am UTC](https://forum.inductiveautomation.com/t/java-high-cpu-usage/75931/3 "2023-07-20T05:48:42Z")

</div>

Thank you for your response. We did some testing and we determined that the cause of this error is a license (I am using the maker edition on VMWare virtual machine).  
We think while checking the license each hour the CPU usage increased by 25%. After 4 hours CPU is at 100%. If we disconnect from the Internet this error will not occur.

We duplicated the virtual machine and created a new license and the error is no longer present. We try to change the license number also on the original virtual machine, but the error is still there.

---

<div class="post-metadata">

**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [July 20, 2023, 11:35am UTC](https://forum.inductiveautomation.com/t/java-high-cpu-usage/75931/4 "2023-07-20T11:35:12Z")

</div>

Who is "we" ? Maker is for personal use only, not commercial, not even for testing. (And this topic should be in the Maker category.)

---

<div class="post-metadata">

**Author:** ![kcollins](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kcollins/32/19646_2.png) [@kcollins](https://forum.inductiveautomation.com/u/kcollins)\
**Post date:** [July 20, 2023, 8:05pm UTC](https://forum.inductiveautomation.com/t/java-high-cpu-usage/75931/5 "2023-07-20T20:05:25Z")

</div>

No reason not to move off of the _original_ version of Maker Edition (8.0.14). No sense in trying to troubleshoot it, just upgrade to the latest!