[Bug 23262] New: ATI Radeon Mobility KMS modeset=1 is slower than modeset=0

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=23262

           Summary: ATI Radeon Mobility KMS modeset=1 is slower than
                    modeset=0
           Product: xorg
           Version: 7.4
          Platform: All
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: high
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: bryce at canonical.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=28531)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=28531)
results.html

Forwarding this bug report from Ubuntu reporter Jerry Lamos.

[Problem]
Performance regression when using the KMS -ati driver corresponding to version
1:6.12.99+git20090805.bd03977e along with kernel, mesa, and libdrm from the kms
ppa: https://edge.launchpad.net/~ubuntu-x-swat/+archive/kms.

[Original Report]
Performance is actually worse than -vesa on this system.

Measurements are from IBM Thinkpad T40 with ATI Radeon Mobility 7500.  See
attached file for specific data.

Col 1 is measurements with xorg driver vesa.
Col 2 is nomodeset no KMS xorg ati driver 6.12.99+git.....
Col 3 is modeset=1 KMS xorg ati driver 6.12.99+git.....


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