Message boards : ATLAS application : 100% CPU Use
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Message 45764 - Posted: 29 Nov 2021, 22:19:42 UTC

Anyone else having Vbox headless suddenly having 100% (or close) CPU usage? Looking at the VDI settings, under system they are now set to use ALL 8 cores, 10GB of main memory and 100% CPU time. The settings are grayed out so all I can change it the CPU max usage. the next 10 coming up in que are the same way. and they dont seem to want to slow down when I use my machine (other BOINC projects do). As a side issue, when I shut down windows the headless do not seem to want to shut down on there own, I have to tell windows to restart anyhow. Has been that way even with win7. I do have latest VBox, Win10 X64, 24GBRAM. AMD 8 core processor.
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Message 45765 - Posted: 30 Nov 2021, 1:11:16 UTC - in response to Message 45764.  

That sounds like the normal behavior for Virtual Box projects. You can set Max # cpus to get a lower cpu count per task and try Max # Jobs to limit running tasks. You can also control the behavior using app_config.xml method.

Virtual Box tasks run at normal priority and require a bit of time to shut down / save the running VM state. I just exit Boinc Manager and have it kill the processes. Give it a minute or two and then reboot or shut down.
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Toby Broom
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Message 45767 - Posted: 30 Nov 2021, 20:08:11 UTC

Yes, normally this reason, change these 2 settings until it works as expected

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Message boards : ATLAS application : 100% CPU Use

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