Hi,
On Tue, Jan 6, 2015 at 1:28 PM, Michael Meeks <michael.me...@collabora.com> wrote: > > As Tor suggested doing an strace on each end would show what's up: > > strace -f -ttt -s 256 -o /tmp/slog slow_proces > > And poke in the /tmp/slog for where there is a multi-second jump in the > time - and paste a dozen lines or so around that in each direction =) > Well I tried this, and it produced a file of a whopping 383087 lines and 30 MB. I wouldnt expect any sane person to look through all of that in its entirety on a page by page basis. ;) I guess that means I cant figure out what's going on. Which leaves me with one last question: Are the large amounts of 'futex(FUTEX_WAIT_PRIVATE) / futex(FUTEX_WAKE_PRIVATE)' expected behavior in this case ? I dont know enough about it to make the call, but it seems to me that inefficient locking may lead to performance issues. Also, futex() is as far as I can tell, a penguin-ism and not available on Mac which may account for the difference ? Just my 2$, please feel free to correct my incorrect assumptions. ;) Anyway, thanks for all the help. - Maarten
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