Bug 13689

Hi everybody,

watching http://toowam.france3.fr/test/casse-noisette/ with adobe flash player is very slow with nouveau. On my nv17 on a athlon XP1800+, 46.1091 % is eaten by nouveau [1] (the guilty seems NVDownloadFromScreen [3]).
With nv, eat only 0.0254%. [2]

This mean using nouveau make impossible to watch this flash animation.

[1]
    71613 46.1091 nouveau_drv.so
    56841 36.5979 libflashplayer.so
     8394  5.4046 libpixman-1.so.0.9.6
     7742  4.9848 libc-2.7.so
     3291  2.1190 librt-2.7.so
     2863  1.8434 Xorg
        CPU_CLK_UNHALT...|
          samples|      %|
        ------------------
             2854 99.6856 Xorg
                9  0.3144 [vdso] (tgid:5681 range:0xa7eee000-0xa7eef000)
      971  0.6252 libexa.so

[2]
   119004 75.4494 libflashplayer.so
    16821 10.6646 libpixman-1.so.0.9.6
    16404 10.4002 libc-2.7.so
     1123  0.7120 Xorg
[...]
       40  0.0254 nv_drv.so

[3]
                symbol name
71147    45.4564  nv_exa.c:437                nouveau_drv.so           nouveau_drv.so           NVDownloadFromScreen
57004    36.4203  (no location information)   libflashplayer.so        libflashplayer.so        (no symbols)
8468      5.4103  (no location information)   libpixman-1.so.0.9.6     libpixman-1.so.0.9.6     (no symbols)
7718      4.9311  (no location information)   libc-2.7.so              libc-2.7.so              (no symbols)
4757      3.0393  nv_exa.c:608                nouveau_drv.so           nouveau_drv.so           NVUploadToScreen
2167      1.3845  (no location information)   Xorg                     Xorg                     (no symbols)
940       0.6006  (no location information)   librt-2.7.so             librt-2.7.so             (no symbols)