A question about "Software rendering for gnome-shell"

[mwesten]

On 03/01/2012 04:31 PM, Adam Jackson wrote:
> On Thu, 2012-03-01 at 13:01 -0500, mwesten wrote:
>
>> I set this up on the Alpha release and the results are below.  I'm
>> assuming there's something wrong with that top entry, but I don't know
>> how to fix it.
>>
>> Events: 50K cycles
>>
>>    55.99%  gnome-shell  perf-6425.map                       [.] 0x19b99e
>
> This is how perf reports the dynamically generated code emitted by llvm.
> But...
>
>>     4.91%  gnome-shell  swrast_dri.so                       [.]
>> lp_tile_b8g8r8x8_unorm_swizzle_4ub
>>     3.50%  gnome-shell  swrast_dri.so                       [.]
>> lp_tile_b8g8r8x8_unorm_unswizzle_4ub
>>     2.60%  gnome-shell  libX11.so.6.3.0                     [.] _XPutPixel32
>>     2.57%  gnome-shell  libX11.so.6.3.0                     [.] _XGetPixel32
>
> That the percentages fall off so quickly is a little suspicious.  To me
> that reads as though gnome-shell itself is being starved for work to do
> and that other things are actually taking more time.  Is this perf trace
> from the whole system or just of gnome-shell?
>
> - ajax
>
I used 'perf record -p 6425' to attach gnome-shell, so that's all it 
should be.  FYI - This is F17-Alpha-i686-Live-Desktop installed to a USB 
HDD on the i845G box.

-Mike