[flac-dev] Performance tests of the current version (git-b1b6caf)

[Erik de Castro Lopo]

Looks good, thanks!

lvqcl wrote:

> Current sources (git-b1b6caf) were compiled with GCC 4.8.2 and GCC 4.9.0
> with various -msseN options (the default is -msse2). Then I took two WAV
> files (one is 16-bit and the other is 24-bit) and compressed them using
> best compression mode. The results are in the table below.
> (please remember that the resulting value is an encoding time, not encoding speed)
> 
> 
> CPU: Intel Core i7 950 (up to SSE4.2)
> FLAC version: git-b1b6caf
> Encoding option: -8
> Result: encoding time, seconds (less is better)
> 
> -----------------------------------------------------------
>                                16 bit input
> -m option |     32 bit codec      |     64 bit codec
>            | GCC 4.8.2 | GCC 4.9.0 | GCC 4.8.2 | GCC 4.9.0
>   (none)   |    51.6   |    35.5   |    ----   |    ----
>   sse2     |    36.3   |    33.7   |    33.0   |    30.8
>   ssse3    |    34.8   |    33.9   |    31.5   |    30.8
>   sse4.1   |    34.8   |    33.5   |    33.0   |    29.4
> -----------------------------------------------------------
> 
> 
> -----------------------------------------------------------
>                               24 bit input
> -m option |     32 bit codec      |     64 bit codec
>            | GCC 4.8.2 | GCC 4.9.0 | GCC 4.8.2 | GCC 4.9.0
>   (none)   |    85.4   |    46.4   |    ----   |    ----
>   sse2     |    73.2   |    44.8   |    41.7   |    40.5
>   ssse3    |    71.5   |    45.2   |    40.0   |    40.4
>   sse4.1   |    47.1   |    44.8   |    41.7   |    40.8
> -----------------------------------------------------------
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-- 
----------------------------------------------------------------------
Erik de Castro Lopo
http://www.mega-nerd.com/