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Date:      Mon, 26 Mar 2007 15:13:26 -0400
From:      John Baldwin <jhb@freebsd.org>
To:        freebsd-current@freebsd.org
Cc:        Dag-Erling =?iso-8859-1?q?Sm=F8rgrav?= <des@des.no>, Julian Elischer <julian@elischer.org>, FreeBSD Current <current@freebsd.org>
Subject:   Re: netstat wierdness?
Message-ID:  <200703261513.27148.jhb@freebsd.org>
In-Reply-To: <86r6rt6z27.fsf@dwp.des.no>
References:  <45F388D4.2080900@elischer.org> <45F45172.8070601@elischer.org> <86r6rt6z27.fsf@dwp.des.no>

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On Tuesday 13 March 2007 09:41:20 am Dag-Erling Sm=F8rgrav wrote:
> Julian Elischer <julian@elischer.org> writes:
> > answering myself..
> > comes from having options LOCK_PROFILING in my kernel.
> > adding the same to /etc/make.conf and recompiling netstat and libkvm=20
helped.
> > (not sure if both are needed)
>=20
> This is very bad.  LOCK_PROFILING should have no visible effect on
> userland.  That is precisely what xinpcb, xunpcb, xtcpcb etc. are for:
> to isolate userland from kernel structures.  They should not contain
> any locks or anything else which would be affected by LOCK_PROFILING
> or other kernel options.

LOCK_PROFILING (and it's predecessor MUTEX_PROFILING) have always resulted =
in=20
variant object sizes in the kernel.  They shouldn't be visible to userland=
=20
though, and fixing xfoo is the right step IMHO.

=2D-=20
John Baldwin



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