Re: cgroup: rmdir() does not complete

[Peter Zijlstra]

On Thu, 2010-09-09 at 12:36 +0100, Mark Hills wrote:

> I am still finding the problem incredibly hard to reproduce, so I'd like 
> to observe as much data as possible from the current case before 
> rebooting. If I could capture some kind of stack trace in the kernel for 
> the running process that would be great, any suggestions appreciated.

echo l > /proc/sysrq-trigger

another thing you can do is run something like: perf record -gp $pid
which will give you a profile of that task.
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