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Date:      Wed, 23 Nov 2005 16:39:16 -0500
From:      Kris Kennaway <kris@obsecurity.org>
To:        Rutger Bevaart <rutger.bevaart@illian.net>
Cc:        freebsd-stable@freebsd.org, Gino Ruopolo <ginoruopolo@hotmail.com>
Subject:   Re: FreeBSD unstable on Dell 1750 using SMP?
Message-ID:  <20051123213916.GA7375@xor.obsecurity.org>
In-Reply-To: <A9565357-D420-49F7-8290-24839CAEAAD2@illian.net>
References:  <BAY16-F286B13CAF8741872B085A3B4500@phx.gbl> <A9565357-D420-49F7-8290-24839CAEAAD2@illian.net>

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On Sun, Nov 20, 2005 at 07:24:25PM +0100, Rutger Bevaart wrote:
> Strange indeed.
>=20
> On a 1750 with bge's:
> 475 mbufs in use
> 501/25600 mbuf clusters in use (current/max)
> 0/3/6656 sfbufs in use (current/peak/max)
> 1120 KBytes allocated to network
> 0 requests for sfbufs denied
> 0 requests for sfbufs delayed
> 0 requests for I/O initiated by sendfile
> 100 calls to protocol drain routines
>=20
> On a 2850 (hardware identical to an 1850):
> $ netstat -m
> 4294966848 mbufs in use
> 565/25600 mbuf clusters in use (current/max)
> 0/67/6656 sfbufs in use (current/peak/max)
> 1018 KBytes allocated to network
> 0 requests for sfbufs denied
> 0 requests for sfbufs delayed
> 16449 requests for I/O initiated by sendfile
> 589 calls to protocol drain routines
>=20
> Both experience the "auto reboot" feature. The mbufs on the 2850 look =20
> like a counter (signed/unsigned) bug, maybe even just in the =20
> printing. Other than that I'm having a hard time interpreting these =20
> results.

This is documented in the 5.4 errata, it's a leak in the stats
counting on SMP machines.  It was fixed after 5.4.

Kris

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