[Bug 82055] [HAWAII] Running some programs, when HW acceleration is on, causes X to spike in CPU usage → unresponsive desktop

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=82055

--- Comment #14 from Michel Dänzer <michel@daenzer.net> ---
(In reply to comment #13)
> According to the sysprof output, libpixman is the place where moste CPU time
> goes.

That just means the problem is a software rendering fallback path, but it
doesn't show which one. You'd need to make sure at least the X server binaries
are compiled with -fno-omit-frame-pointer and have debugging symbols.


(In reply to comment #7)
> Do you know which commit resolves this?

Not sure, but my guess would be
http://cgit.freedesktop.org/xorg/xserver/commit/?id=45ebc4e3fac7f1a85167d05e2833949b89f02d64
or one of the commits surrounding it.

> If not, do you need a bisect?

That would be interesting.

> If yes, will that commit be backported to the 1.16 branch?

I can't predict the future, you'll have to nominate it and see. :)

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