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Thread: More Mesa 10.2 + Linux 3.14 Benchmarks On Ubuntu 14.04 LTS

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  1. #1
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    Default More Mesa 10.2 + Linux 3.14 Benchmarks On Ubuntu 14.04 LTS

    Phoronix: More Mesa 10.2 + Linux 3.14 Benchmarks On Ubuntu 14.04 LTS

    In verifying and complementing the major R600/RadeonSI performance regressions noted earlier today for a wide-range of AMD Radeon hardware, here's some more tests that were done this weekend on a different system that also finds the newer code to be running slower than Linux 3.13 + Mesa 10.1..

    http://www.phoronix.com/vr.php?view=MTYxOTQ

  2. #2
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    good news about improving. I hope also tests by HD3850 AGP... that's my card.

  3. #3
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    However, this doesn't appear to be the only cause for the performance drop when upgrading Ubuntu 14.04's graphics stack. Other regressions have also been reported by other users of the open-source AMD driver. "This is not completely from HyperZ and so still worth investigating. We have reports from Luke and dungeon on this forum that confirm there's another regression besides the intended hyperz change. Luke specifically tested it, dungeon's case is media apps that do not use the Z buffer." There's more comments in this forum post about the issue unrelated to HyperZ.
    So for my r200 regression

    bad
    https://git.kernel.org/cgit/linux/ke.../next-20140228

    bad
    https://git.kernel.org/cgit/linux/ke...=next-20140115

    good
    https://git.kernel.org/cgit/linux/ke...=next-20140114

    and then:

    good
    http://cgit.freedesktop.org/~airlied...3e2c930f3f5706

    BINGO
    bad
    http://cgit.freedesktop.org/~airlied...a3867867216103
    Last edited by dungeon; 03-02-2014 at 10:01 PM.

  4. #4
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    That is enough for today . Maybe i will checked agd5f tree further for the right commit tomorrow

  5. #5
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    Found it . My bad it is not in radeon, but change in ttm... this commit:

    http://cgit.freedesktop.org/~airlied...fda6ef42b53eb5

    It says "Use PFNMAP instead of MIXEDMAP where possible for performance", but actually this make it running poor on r200 and consume nearly 500 MHz more CPU here .

  6. #6
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    Quote Originally Posted by dungeon View Post
    Found it . My bad it is not in radeon, but change in ttm... this commit:

    http://cgit.freedesktop.org/~airlied...fda6ef42b53eb5

    It says "Use PFNMAP instead of MIXEDMAP where possible for performance", but actually this make it running poor on r200 and consume nearly 500 MHz more CPU here .
    Please file a bug (https://bugs.freedesktop.org) and cc Thomas.

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