[haiku-development] Re: Optimizing Painter::_DrawBitmapBilinearCopy32
- From: Stephan Assmus <superstippi@xxxxxx>
- To: haiku-development@xxxxxxxxxxxxx
- Date: Sun, 14 Jun 2009 19:56:04 +0200
On 2009-06-14 at 19:44:14 [+0200], Urias McCullough <umccullough@xxxxxxxxx>
wrote:
> ~> runme_haiku
> Benchmark: Haiku app_server bilinear copy
> Compile date: Jun 14 2009 14:38:02
> GCC version: 2.95.3-haiku-081024
>
> CPU vendor ID: GenuineIntel
> CPU:
> SIMD instructions: MMX SSE SSE-Integer
>
> Can't lock process to CPU on this platform.
> Estimated CPUID/RDTSC overhead: 109 clock cycles.
> 10 runs per benchmark.
>
> -- Results --
>
> Minimum Average Maximum
> # 1: 453962 492521 676056 - 'C, original'
> # 2: 502890 523050 652266 - 'C, precise'
> # 3: 495008 499859 516316 - 'C, precise DIV'
> # 4: 291554 298556 343949 - 'MMX/SSE'
> Skipped 'MMX/SSE optim-test', insufficient SIMD support
> Skipped 'SSE2', insufficient SIMD support
> Skipped 'SSSE3', insufficient SIMD support
These certainly look strange. That means your PIII 450 MHz is about twice
as fast as your P 4 2.8 GHz.
Best regards,
-Stephan
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