[Mesa-dev] [Bug 84570] Borderlands 2: Constant frame rate drops while playing; really bad with additionl lighting

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Oct 15 08:46:24 PDT 2014


--- Comment #19 from Andreas Hartmetz <ahartmetz at gmail.com> ---
I've noticed that disabling CPU frequency scaling makes a big difference in the
severity of micro-hangs (3.17, dynamic lights off). My explanation is that,
when threads are waiting for each other, the scheduler doesn't know that the
apparently "idle-blocked" threads would all run faster overall if the CPU went
faster. Doesn't matter if that's wrong, the difference is there...

At least on AMD (some Intel CPUs use a special frequency scaling driver), you
can effectively disable CPU frequency scaling like so:
echo performance | tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

Maybe that also helps a bit with dynamic lights on?

You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/mesa-dev/attachments/20141015/eefcc313/attachment.html>

More information about the mesa-dev mailing list