Messages in this thread | | | Date | Mon, 13 May 2013 10:57:36 -0700 | From | Dirk Brandewie <> | Subject | Re: 3.9.0 + CONFIG_X86_INTEL_PSTATE=y -> ThinkPad T420 with i5 lost ACPI functionality |
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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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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