Well ideally you want to run the profiler during the scrubbing process
when the memory leaks appear :-).
--
Regards,
Sébastien Han.


On Tue, Jan 22, 2013 at 10:32 PM, Sylvain Munaut
<s.mun...@whatever-company.com> wrote:
> Hi,
>
>> I don't really want to try the mem profiler, I had quite a bad
>> experience with it on a test cluster. While running the profiler some
>> OSD crashed...
>> The only way to fix this is to provide a heap dump. Could you provide one?
>
> I just did:
>
> ceph osd tell 0 heap start_profiler
> ceph osd tell 0 heap dump
> ceph osd tell 0 heap stop_profiler
>
> and it produced osd.0.profile.0001.heap
>
> Is it enough or do I actually have to leave it running ?
>
> I had to stop the profiler because after doing the dump, the OSD
> process was taking 100% of CPU ... stopping the profiler restored it
> to normal.
>
> Cheers,
>
>     Sylvain
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