On 11/22/2016 02:00 PM, Piotr Dałek wrote:
On Tue, Nov 22, 2016 at 11:42:48AM -0800, Victor Denisov wrote:
Hello ceph developers,
I'm learning how to profile ceph and came across this page:
http://docs.ceph.com/docs/giant/rados/troubleshooting/cpu-profiling/
The page suggests to use oprofile. I compiled oprofile version
1.1.0(http://oprofile.sourceforge.net/faq/), but it doesn't have
opcontrol binary.
Am I doing something wrong? Is it an outdated procedure for profiling?
Is there a newer one?
Well, they actually noted (in the faq you linked) that opcontrol is a
legacy tool. And the cpu profiling guide is for "Giant" Ceph release
(also quite legacy).
Anyway, operf + opreport tandem is sufficient for me and I'm sure it
will be enough for you.
I like perf myself:
sudo perf record --call-graph dwarf -F99 -p <ceph daemon pid>
sudo perf report
Mark
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