[Nouveau] [Bug 93573] New: bad performance with 4k h264 video

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93573

            Bug ID: 93573
           Summary: bad performance with 4k h264 video
           Product: xorg
           Version: git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau at lists.freedesktop.org
          Reporter: freedesktop at karolherbst.de
        QA Contact: xorg-team at lists.x.org

I noticed a while back already, that nouveau handles 4k video not that well
currently.

I tried it out with the cactus-4k video from here:
http://www.elementaltechnologies.com/resources/4k-test-sequences

Nvidia doesn't have any problem playing that video at full speed, but on my
kepler nve6 card even full reclocked nouveau only handles this at 45% speed and
the PVLD engine is at max load (only around 80% with nvidia)

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