Hi Steve,
Congratulations! :)
On Fri, Jun 10, 2011 at 11:54 PM, S. Erisman <seris...@serisman.com> wrote:
> SUCCESS!
>
> I figured out the major problem with my SSE code. Apparently you have
> to pay special attention to how the CPU access memory and provide the
> proper cache hints so it doesn't starve itself and make you wait for
> slow RAM accesses.
>
> This simple commit has made a huge difference on RemoteFX performance
> (more optimizations to come):
>
>
> https://github.com/FreeRDP/FreeRDP/commit/220008fad7dc7eabc81e2e03b81604145d369ad4
>
> before change:
>
> | rfx_decode_YCbCr_to_RGB_SSE2 | 15671 | 4.740000 |
> 0.000302 |
>
> after change:
>
> | rfx_decode_YCbCr_to_RGB_SSE2 | 24945 | 0.460000 |
> 0.000018 |
>
>
> That is a > 18x improvement over the previous version, and the
> difference is visually noticeable.
> The SSE optimized method is now about 5-6x faster than the non-SSE method.
>
> Both of these results came from my Intel Atom D510 board.
>
> Thanks,
> Steve
>
>
> On 6/10/2011 1:09 AM, S. Erisman wrote:
> > Hey Vic,
> >
> > On 6/10/2011 12:32 AM, Vic Lee wrote:
> >> Hi Steve,
> >>
> >> Yes both is faster, but the SSE version is still quite slower than the
> >> original one. Here is my testing.
> >>
> >> Before pulling:
> >> | rfx_decode_YCbCr_to_RGB_SSE2 | 2123 | 1.750000 | 0.000824 |
> >> | rfx_decode_YCbCr_to_RGB | 2098 | 0.260000 | 0.000124 |
> >>
> >> After pulling your commits:
> >> | rfx_decode_YCbCr_to_RGB_SSE2 | 2049 | 0.690000 | 0.000337 |
> >> | rfx_decode_YCbCr_to_RGB | 2111 | 0.240000 | 0.000114 |
> >>
> >> Oh by the way, the profiler is cool. :)
> >>
> >> Vic
>
>
>
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