On Tue, 15 Feb 2011 09:52:51 +0200 Zvi Dubitzky <DUBI@il.ibm.com> wrote:
Hi
I was asking about the fedora 14 kernel if it is good enough for cgroup usage because I am trying to set a cgroup under cpu subsytem ( /dev/cgroup/cpu/group1/ ) that have /cpu.rt_runtime_us of 100000 while cpu.rt_period_us has a value of 1000000 i.e a ratio of 1/10 . still when I run a task (endless loop) in that group (cgexec -g cpu,cpuset:group1 ./test) it gets all the cpu core time that is assigned to it ( i watch via top utility) , so it seems that the quota set via the group does not take effect although I restart the cgconfig service . I also verified libcgroup is installed by: rpm -q libcgroup
Am I missing something or top is not the right utility to watch the cpu usage in this case ?
rt_runtime_us and rt_period_us are parameters for handling realtime class (SCHED_RR, SCHED_FIFO) applications. Does your 'test' run in which priority ? (see sched_setscheduler()) Thanks, -Kame
thanks
Zvi Dubitzky Email:dubi@il.ibm.com
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