On Thu, Aug 26, 2010 at 01:04:33PM -0400, Daniel J Walsh wrote: > > I don't know. My goal with sandbox was to allow users to startup > sandboxes in such a way that they could be still killed. > > Is there a way in cgroups to say > > dwalsh gets 80% CPU > Then allow dwalsh to specify sandboxes can only use 80% of His CPU. So > he can kill them. You can't directly specify absolute CPU%. You can only set relative prioritization between groups via the 'cpu_shares' tunable. A group with double the 'cpu_shares' value will get twice as much running time from the schedular. If you know all groups at a particular level of the hierarchy you can calculate the relative shares required to give the absolute 80% value, but it gets increasingly "fun" to calculate as you add more groups/shares :-) eg with 2 cgroups group1: cpu_shares=1024 (20%) group2: cpu_shares=4096 (80%) With 3 groups group1: cpu_shares=512 (10%) group2: cpu_shares=512 (10%) group3: cpu_shares=4096 (80%) Or with 3 groups group1: cpu_shares=342 (6.66%) group1: cpu_shares=682 (13.34%) group2: cpu_shares=4096 (80%) Regards, Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://deltacloud.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :| -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel
