High CPU after upgrade from 11.3 to TrueNAS

[aakelley]

I have a ~2yo FreeNAS (now TrueNAS CORE) system. I started with 11.1 and most recently upgrade from 11.3 to TrueNAS using the 12.0 Stable release train. Ever since the upgrade, my CPU seems to be getting eaten up, with little recovery. I can get it back down to low usage if I reboot, but a few days later, its back up again. CPU Utilization chart with a few key points annotated:

System details:

• CPU: Intel(R) Pentium(R) Gold G5420 CPU @ 3.80GHz
• 32 GB ECC Memory
• 4 x 6 TB WD Red HDD in RaidZ2
• Jails: PLEX (manual install of latest), Unifi Controller (manual install of v5 controller), Homebridge (plugin)
• Tasks: Backup subset of data to S3

 

[aakelley]

Also, here is a snapshot from top:

 

[sretalla]

Have a look here:

Massive System Slowdown

So, I have been having issues with my FreeNAS/TrueNAS server. I get the following errors in the log that come back after rebooting. Usually 6-12 hours later. Nothing else is in the /var/log/messages file before or after these types of entry. Oct 22 11:10:42 freenas 1...

www.truenas.com

There are some suggestions about some jails making system calls further down the thread (last few pages) in a way that's not good.

Press J while top is running to see the jail ID, then use jls to get the JID of the jails to see if you can get a clue about which one it might be (although homebridge is certainly mentioned as one of the bad actors).

 

[aakelley]

Appreciate the pointer. After clicking few a few other threads, I think I found the culprit: Homebridge and specifically the issue here: https://github.com/oznu/homebridge-config-ui-x/issues/956

I turned off the Homebridge Jail and my CPU dropped back to normal.