Wojciech Puchar wrote:
>
> > Wojciech Puchar <
wojtek@...> writes:
> >> Why it's THAT bad?
> >
> >
http://svn.freebsd.org/base/head/sys/pci/if_rl.c> >
> > Scroll down past the copyright, license and attribution. Read the
> > 38-line comment that explains just how crappy this chip really is.
>
> Well - really "low end".
>
> But - this computer can do memcpy at 80MB/s, so at 3.5MB/s it should be 5%
> CPU for memcpy, and one interrupt per one packet (2500 packets/s).
>
> Is something more that make it consume >50% CPU?
Accessing the on-card memory through PCI is guaranteed to be
slower than the main memory, and depending on the particular
card it may be much slower.
-SB
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