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Date: Sun, 13 Jun 2004 21:13:15 +0300
From: Ruslan Ermilov <ru@FreeBSD.org>
To: Jon Noack <noackjr@alumni.rice.edu>
Message-ID: <20040613181315.GB54104@ip.net.ua>
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cc: Magnus Carlebj?rk <magnus@carlebjork.se>
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cc: luigi@iet.unipi.it
Subject: Re: Device polling
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On Sun, Jun 13, 2004 at 01:07:28PM -0500, Jon Noack wrote:
[...]
> I just tested this on my SMP all-in-one home server (Web, Mail, NFS,=20
> Samba, Squid, etc.).  It's been up for over 24 hours with no apparent=20
> issues.  The machine is used pretty heavily, with NFS mounted home=20
> directories and CVS mirror (see below) -- a CVS update of the src tree=20
> over NFS has done a good job of breaking fragile setups in the past.=20
> Everything seemed OK.  That said, peak performance (as tested by iperf)=
=20
> took a nosedive: with 32-bit em adapters (gige), tcp bandwidth dropped=20
> from over 360Mbps to around 200 Mbps.  If anyone has any suggestions for=
=20
> more in-depth testing, I'd be willing to try them.  If I have the time I=
=20
> may also try the latest netperf patch and see how that affects things.
>=20
What are your operational polling(4) parameters?  What the HZ is set to?


Cheers,
--=20
Ruslan Ermilov
ru@FreeBSD.org
FreeBSD committer

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