Running GPROF on Samba

[Ralph Böhme]

On Sun, Mar 01, 2015 at 07:38:33PM +0100, Ralph Böhme wrote:
> On Sun, Mar 01, 2015 at 04:21:51PM +0000, Richard Schmitt wrote:
> > I've seen some old discussion on profiling but nothing recent.  Is
> > there a procedure for running gprof on Samba?  I've added the
> > appropriate flags to the Makefiles and do get a gmon.out file but I
> > suspect my issue is that I am not cleanly shutting down Samba when I
> > wish to collect the profile data.  Is there a way to cleanly shut
> > down Samba?  Or are there some other suggestions on how to collect
> > gprof data on smbd.
> > 
> > What I really want to get is a call graph when running various
> > benchmarks.
> 
> Can't help with gprof, but there's Flamegraph which can use output
> from perf:
> 
> <https://github.com/brendangregg/FlameGraph>
> <http://www.brendangregg.com/FlameGraphs/cpuflamegraphs.html>

fwiw, here's an example of briefly profiling a session smbd while the
client opened a directory with lots of files:

<https://www.samba.org/~slow/perf-smbd.svg>

-Ralph

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