> >
> > (Hurm.... Wintendo outperforming unix???!?? Something's
> > improper about this, and it ought to be fixed... :-)
> > Comments? Other OS numbers: more recent
> > FreeBSD versions? Solaris? Tru64? Optimization
> > patches? Can those OO MSDN lobotomies actually
> > be good things? Hurm... The Italian gauntlet has
> > been thrown down.... --dr :-)
> >
> > url: http://netgroup-serv.polito.it/winpcap/docs/performance.htm
>
> I'm looking at this, FreeBSD seems to better on all accounts except
> writing the packets to disk.
>
> Can any of the winpcap people explain exactly how they measured
> the disk performance?
>
...
> Honestly, it really looks like the fault lies with the way tcpdump
> writes to disk and not with FreeBSD.
What I couldn't figure out from the url was if they were using dma for
the disk. Maybe they were using it on Windows and not on FreeBSD? (On
FreeBSD 3 you have to enable it with flags in the kernel config file.)
Also they don't say if they have changed the debug.bpf_bufsize sysctl
from its default smallish 4096 bytes. Those 2 things can make a huge
difference.
John
--
John Hay -- [EMAIL PROTECTED]
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