22.05-RC high CPU load

MoonKnight

@renegade
Hi I don't see that problem here after upgrading to 22.05 RC.

renegade

Thanks for the feedback.

I have upgraded on Thursday.
This is how it look like.

There is a high increase on CPU.

MoonKnight

@renegade
hmm interesting, did you reboot your firewall after the updating to 22.05 RC?
What packages have you installed?

renegade

@moonknight
pfblocker. And it seems to be the same issue as described in 3-1-0-4-high-cpu-load
I killed the php_pfb task and cpu load dropped down to 0.02 as before.

I had no issues with pfblocker in 22.05

MoonKnight

@renegade
Did you try to reinstall pfBlockerNG-Dev?

I'm running pfBlockerNG-Dev, never seen as high CPU usage as you have.
And I'm running other packages also.

renegade

@moonknight
Yes, I did and no change unfortunately.
I now deactivated the services.
When the final arrives, I will make a clean install I guess.

stephenw10

@renegade said in 22.05-RC high CPU load:

got so hot that the CPU turnend off

That should not be possible. You should be able to run the CPU 100% without running into thermal shutdown. If you can't then I suggest checking and/or improving your cooling solution.

I have one system here running pfBlocker that behaves like that. After some minutes (not immediately) one CPU core get stuck at 100% until pfBlocker is disabled. Is that what you're seeing?

Steve

renegade

@stephenw10
Yeah, you are right. I have to improve that. Unfortunately the device is in a quite warm environment.

And yes, that's what I can see on my installation. Same behaviour.
thanks for confirming, Steven.

dennypage

FWIW, I've seen similar.

Screen Shot 2022-06-12 at 10.16.33.png

Hasn't resulted in a problem though.

stephenw10

Also running pfBlocker? Does it start after some time, not immediately?

dennypage

@stephenw10 Yes, running pfBlockerNG-devel.

At first I thought I noticed that it didn't start right after boot, but I didn't investigate sufficiently.

I just rebooted and checked carefully, and you are right, CPU starts ramping up approximately 2 minutes after boot is complete.

dennypage

@stephenw10 Without rebooting, stopping the pfb_filter returns the cpu to normal levels.

Restarting pfb_filter cause cpu to return to higher levels after approximately 2 minutes and 30 seconds..

renegade

I noticed that there is a new Snapshot version of the 22.05 RC this morning.
Is it fixed already? Or has pfblocker maybe to fix it?

stephenw10

It is not fixed as far as I know. Tracking it here: https://redmine.pfsense.org/issues/13154

Add any additional details you may uncover there.

Steve

dennypage

@stephenw10, I've updated the redmine issue with a temporary fix. I make no representation that this fix is the best approach.

@BBcan177, please take a look. Thanks.

stephenw10

Nice. Looks like work is already in progress here: https://redmine.pfsense.org/issues/13156

dennypage

@stephenw10 Well shucks. Seeing that would have saved me a bunch of work. I guess I need to spend more time spelunking redmine.

stephenw10

Yup I missed that too. Or at least I failed to realise the root cause was the same.

Still when you independently come up with the same fix that's always a good sign.

Working for me here on 2.7.

Steve

drewsaur

Thank you all and @BBcan177 for the simple patch, because I was about to make a long post looking for help, and the little edit to line 4139 solved my CPU load issues with 22.05 completely.

I think this fix should be made more prominent - I am not using a 22.05 development snapshot, but rather 22.05 final, and I found this thread via a search and not via a browse of the forums. I feel lucky to have found it.