From: "Rémi Denis-Courmont" <rdenis@simphalempin.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: netdev@vger.kernel.org, Bernhard Schmidt <berni+ipv6@birkenwald.de>
Subject: Re: IPv6 tunnel scalability problem
Date: Mon, 1 Sep 2008 18:09:26 +0300 [thread overview]
Message-ID: <200809011809.26410.rdenis@simphalempin.com> (raw)
In-Reply-To: <8763pgxead.fsf@basil.nowhere.org>
Le lundi 1 septembre 2008 15:04:58 Andi Kleen, vous avez écrit :
> Rémi Denis-Courmont <rdenis@simphalempin.com> writes:
> > I have been maintaining a TUN-based Linux implementation of
> > Teredo/RFC4380. On a busy node, this can trigger quite many peers on the
> > virtual point-to-point tunnel interface. I have received complaints that
> > the whole thing seems to hit some severe performance bottleneck when this
> > happens. It is not clear to me at this point whether it's a kernel or a
> > user problem. So I have been writing a stress test.
>
> You could use oprofile to find out where the CPU time is going.
> That would work even during normal operation. Post the opreport -l output
Understood. But this far, the kernel crashes during my stress test...
--
Rémi Denis-Courmont
http://www.remlab.net/
prev parent reply other threads:[~2008-09-01 15:09 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-31 16:58 IPv6 tunnel scalability problem Rémi Denis-Courmont
2008-09-01 12:04 ` Andi Kleen
2008-09-01 15:09 ` Rémi Denis-Courmont [this message]
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