I'm running Boinc on my Debian 12 Desktop. My Ryzen CPU has 24 cores. I set boinc to run all the time (do work while in use = YES) and use 21 of the cores. This works fine most of the time, but I occasionally need to suspend operation from the Manager for a few minutes to let something "settle".
What I'd LIKE to do is use maybe 15 cores when I'm actively using the desktop, but let it run with 23 if I'm away from my desk.
But I can't do that as the "do work while computer is on use" setting is just yes or no.
If there is no other way to do this can I suggest this setting be modified to say yes/no/partial. With a second set of " use at most # processors"

My first post since the early days of SETI, but apologies if this is the wrong place.

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If using advanced view Options>computing preferences while computer is in use you can set it to 62.5% of the CPUs and under the while not in use settings use 87.5% of available cores should do it. If you have an old client it is possible you don't have the separate preferences for while computer is in use and while not in use. In that case you would have to update to a more recent BOINC client. If you look up the command line interface commands there will be commands to do it that way too.

Thanks Dave. Apparently I'm running7.20.5 of Boinc Manager. The boinc release notes say the not-in-use preferences came with 7.22.1 I'll have a look around to see if that's scheduled for debian or maybe install it directly
Many thanks for the help. All these years using the client and I'm two months late on my first suggestion!