Hi,
On Wed, 30 May 2012, Robert Haas wrote:
> I'd really like to find out exactly where all those s_lock calls are
> coming from. Is there any way you can get oprofile to output a
> partial stack backtrace? If you have perf it's very easy, just 'perf
> record -g -a <command to launch your test case>' and then 'perf report
> -g'.
I repeated my test with 8 threads (without tasksetting) and with
sharedbuffers=48g (because that seemed to trigger in particular long
times ~ 80 seconds). And I attach the perf report.
Cheers, S
*****************************************************
Sergey E. Koposov, PhD, Research Associate
Institute of Astronomy, University of Cambridge
Madingley road, CB3 0HA, Cambridge, UK
Tel: +44-1223-337-551 Web: http://www.ast.cam.ac.uk/~koposov/