[Trac #748] X performance regression between build218 and build221

[Zarro Boogs per Child]

#748: X performance regression between build218 and build221
--------------------+-------------------------------------------------------
 Reporter:  ajax    |       Owner:  ajax     
     Type:  defect  |      Status:  new      
 Priority:  normal  |   Milestone:  Untriaged
Component:  distro  |    Keywords:           
--------------------+-------------------------------------------------------
 {{{
 1: build218.cooked
 2: build221.cooked

     1              2           Operation
 --------   -----------------   -----------------
  38500.0    20600.0 (  0.54)   Copy 10x10 from window to window
  10400.0      647.0 ( 0.062)   Copy 100x100 from window to window
    525.0       27.3 ( 0.052)   Copy 500x500 from window to window
  34600.0    30200.0 (  0.87)   Copy 10x10 from pixmap to window
  10000.0     3440.0 (  0.34)   Copy 100x100 from pixmap to window
    532.0      194.0 (  0.36)   Copy 500x500 from pixmap to window
  52400.0    24700.0 (  0.47)   Copy 10x10 from window to pixmap
  10600.0      639.0 ( 0.060)   Copy 100x100 from window to pixmap
    534.0       26.4 ( 0.049)   Copy 500x500 from window to pixmap
  57600.0    46900.0 (  0.81)   Copy 10x10 from pixmap to pixmap
  10700.0     3150.0 (  0.29)   Copy 100x100 from pixmap to pixmap
    520.0      134.0 (  0.26)   Copy 500x500 from pixmap to pixmap
  34600.0    28400.0 (  0.82)   PutImage 10x10 square
    980.0      950.0 (  0.97)   PutImage 100x100 square
     47.4       45.8 (  0.97)   PutImage 500x500 square
  20800.0    21500.0 (  1.03)   ShmPutImage 10x10 square
   3250.0     3240.0 (  1.00)   ShmPutImage 100x100 square
    188.0      185.0 (  0.98)   ShmPutImage 500x500 square
   1780.0     1700.0 (  0.96)   GetImage 10x10 square
    416.0      396.0 (  0.95)   GetImage 100x100 square
     18.9       19.0 (  1.01)   GetImage 500x500 square
 }}}

 No data for 219 or 220, but the only change that looks relevant is the
 addition of RANDR support.

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Ticket URL: <http://dev.laptop.org/ticket/748>
One Laptop Per Child <http://laptop.org/>