Re: zerocopy results on GigE

[Pekka Pietikainen <pp@xxxxxxxxxxxxxx>]

On Tue, Feb 06, 2001 at 07:49:19PM +0200, Pekka Pietikainen wrote:
<cartman>
Kick ass!
</cartman>

Basically it's no worse than non-zc in anything (and it's slightly
better even in tests where there is no zc happening, probably due to more
aggressive acenic interrupt coalescing etc. settings).

> 2.4.2-pre1
zerocopy-2.4.2-2
> 
> writing from buffer           70MB/s          54%             33%
                                72MB/s          40%             25%
> +MSG_TRUNC on receiver        98MB/s          19%             46%
                                100MB/s         28%             60%             
> 
> 64M file
> 
> read/write from file          50MB/s          33%             50%
                                54MB/s          40%             59%
> +MSG_TRUNC                    51MB/s          16%             53%
                                54MB/s          17%             60%
> sendfile()                    68MB/s          48%             41%
                                72MB/s          58%             11%
> +MSG_TRUNC                    93MB/s          36%             56%
                                100MB/s         31%             23%
> mmap()/write                  57MB/s          39%             32%
                                70MB/s          59%             47%
> +MSG_TRUNC                    87MB/s          28%             53%
                                100MB/s         32%             63%
--
Pekka Pietikainen