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On Tue, 2015-01-06 at 15:20 +0100, Maarten Hoes wrote:
Well I tried this, and it produced a file of a whopping 383087 lines
and 30 MB.

        That is expected.

 I wouldnt expect any sane person to look through all of that in its
entirety on a page by page basis. 
;)

        Hit page-down in 'less' - and when you see the time-stamp 'jump' (ie.
we missed 20 seconds ;-) on the left - then that's the interesting bit.

Are the large amounts of 'futex(FUTEX_WAIT_PRIVATE) /
futex(FUTEX_WAKE_PRIVATE)' expected behavior in this case ?

        Yes - quite expected - and yes we take locks and release them just for
fun all over the place: then again, we shouldn't take contended locks a
lot so should avoid the syscall there mostly which is in itself odd -
but I doubt that that is related to your problem.

        ATB,

                Michael.

-- 
 michael.meeks@collabora.com  <><, Pseudo Engineer, itinerant idiot


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