CPU load and stuck processes

sclg

Noticed yesterday that I had a high CPU load from Vivaldi.
CPU sitting at about 20% all the time in W10 task manager.
Mail and Calendar are switched off.
Tried disabling all extensions - no change.
Close Vivaldi and there is STILL a Vivaldi process sitting there taking 20%+

Been using V for years and not seen this before.
Any ideas what to try?

Pathduck

@sclg Find what process is causing the CPU using the internal Task Manager (Shift+ESC/Tools Menu). Find its PID. Close Vivaldi and verify it's the same PID running.
Find the command line of this PID using Process Explorer.
https://docs.microsoft.com/en-us/sysinternals/downloads/process-explorer

Check chrome://settings/system and turns off "Continue running background apps when Vivaldi is closed"

Check chrome://apps if you have installed some PWA apps and uninstall them to test if the problem goes away.

Some extensions and web apps might turn this setting on and cause processes to hang around after browser close.

sclg

@Pathduck said in CPU load and stuck processes:

chrome://apps

The process is called 'Browser' and CPU is sitting around 101 while all other processes are less than 1. Checking the PID, it is vivaldi.exe.

Have turned off running things in the background.
No PWA apps

However, turning off "Continue running background apps when Vivaldi is closed" seems to have fixed the problem. It's now back to normal and stops correctly when closed.

Does seem odd though as that's not something I have ever touched before!

Thanks for the advice

Pathduck

@sclg said in CPU load and stuck processes:

Have turned off running things in the background.

And did you try closing the browser and seeing if the process stayed around and if it was the same PID?

vivaldi.exe is not a PID, a PID is a number like 2335.
All browser processes are called vivaldi.exe so that's not saying much.

sclg

@sclg
See my edited answer above - it does seem to have fixed the problem so no longer any process hanging on after it's shut.

I know PID is a number. I took the number of the offending process in the internal task manager then looked it up in process explorer and it said it was vivaldi.exe!

Thanks again.

Pathduck

@sclg said in CPU load and stuck processes:

it does seem to have fixed the problem so no longer any process hanging on after it's shut.

Good, so it was something causing the process to hang around, my guess is an extension probably.

What about CPU load, still high when running?
If so I suggest first testing in a clean profile to see if the same occurs.
Then disabling all extensions, closing all tabs and restarting the browser.

If it was the main "Browser" process it might be the Mail/Calendar/RSS client but you say you've disabled that.

The full command line is interesting to know, because it tells what kind of process we're talking about. Here for instance, pid 8396 is an extension process:

sclg

@Pathduck said in CPU load and stuck processes:

What about CPU load, still high when running?

No! As soon as I turned off the running in background business and restarted it, the whole thing was normal.
All extensions were already disabled to try and sort the problem. I've since re-enabled them and all is still well.

If it happens again, i'll know what to do!
Thanks