On 05/13/2013 10:20 AM, Toralf Förster wrote:
On 05/13/2013 06:43 PM, Dirk Brandewie wrote:
I spent some more time looking for a solution to this you can get same
behavior
by setting a config option in BOINC "Use at most X % CPU time"
yes - that's true. But BOINC is just an example.
If "nice -19 <loooong running background job" is nowadays so uncommon,
then I'm just curious what's the modern (easy) way of doing that ?
I believe using CGROUP's is the right answer for limiting this type
of load.
I have not tested it but from reading:
Documentation/scheduler/sched-design-CFS.txt
https://wiki.archlinux.org/index.php/Cgroups
You should be able to do something like the following:
cd /sys/fs/cgroup/cpu
mkdir bonic
echo 400 > boinc/cpu.shares
boinc &
echo $! > boinc/tasks
Should limit the boinc group to ~40% of the cpu.
WARNING completely untested YMMV
--Dirk
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