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Date: Fri, 20 Apr 2007 15:11:05 -0400
From: Kris Kennaway <kris@obsecurity.org>
To: Kevin Oberman <oberman@es.net>
Message-ID: <20070420191105.GA38067@xor.obsecurity.org>
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Cc: freebsd-stable@freebsd.org, Alexey Karagodov <karagodov@gmail.com>
Subject: Re: 6.2-RELEASE does not use second CPU?
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On Fri, Apr 20, 2007 at 12:08:57PM -0700, Kevin Oberman wrote:
> > Date: Fri, 20 Apr 2007 22:54:52 +0400
> > From: "Alexey Karagodov" <karagodov@gmail.com>
> > Sender: owner-freebsd-stable@freebsd.org
> > 
> > and what is this, i mean why:
> > WARNING: debug.mpsafenet forced to 0 as ipsec requires Giant
> > WARNING: MPSAFE network stack disabled, expect reduced performance.
> 
> I thought it was pretty clear. 
> 
> ipsec is not multi-processor safe and requires the use of GIANT. If you
> have IPSEC in your kernel the network stack will also be giant locked
> which will cut performance.

Yep, google for extensive discussion (hint: FAST_IPSEC)

Kris

> -- 
> R. Kevin Oberman, Network Engineer
> Energy Sciences Network (ESnet)
> Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
> E-mail: oberman@es.net			Phone: +1 510 486-8634
> Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751