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To: Darren Reed <darrenr@freebsd.org>
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Cc: arch@freebsd.org, freebsd-current@freebsd.org,
	"Christian S.J. Peron" <csjp@FreeBSD.org>
Subject: Re: HEADS UP: zerocopy bpf commits impending
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On Wed, 23 Apr 2008, Darren Reed wrote:

> Out of curiosity, were those numbers for single cpu/core systems or systems 
> with more than one cpu/core active/available?
>
> I know the testing I did was all single threaded, so moving time from kernel 
> to user couldn't be expected to make a large overall difference in a non-SMP 
> kernel (NetBSD-something at the time.)

I believe all multi-core.

BTW, if you are set up to do performance measurement on BPF, we'd really love 
to see further feedback relating to successful or unsuccessful measurement.

Robert N M Watson
Computer Laboratory
University of Cambridge