From: Ralf Baechle <ralf@linux-mips.org>
To: Matej Kupljen <matej.kupljen@ultra.si>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>,
Daniel Jacobowitz <dan@debian.org>,
linux-mips@linux-mips.org
Subject: Re: [PATCH] Fix TCP/UDP checksums on the Broadcom SB-1
Date: Tue, 20 Sep 2005 12:06:09 +0100 [thread overview]
Message-ID: <20050920110609.GB3159@linux-mips.org> (raw)
In-Reply-To: <1127214005.2149.15.camel@localhost.localdomain>
On Tue, Sep 20, 2005 at 01:00:04PM +0200, Matej Kupljen wrote:
> > > This caused incorrect checksums in some UDP packets for NFS root. The
> > > problem was mild when using a 10.0.1.x IP address, but severe when
> > > using 192.168.1.x.
> >
> > Ah! So *that* is the reason for the absolutely abysmal NFS performance
> > of the SWARM with 2.6! I have had no time to track it down -- thanks a
> > lot!
>
> Is this for MIPS64 only?
> Because, on dbau1200 we also have poor NFS performance :-(
It's for 64-bit kernels only. Note the difference, I didn't say MIPS64.
Also, since this bug did result in an operation that has undefined
behaviour it likely may will only have impacted some 64-bit processors -
such as the SB1 - but others may have been unaffected.
Ralf
next prev parent reply other threads:[~2005-09-20 11:06 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-20 3:28 [PATCH] Fix TCP/UDP checksums on the Broadcom SB-1 Daniel Jacobowitz
2005-09-20 10:43 ` Maciej W. Rozycki
2005-09-20 11:00 ` Matej Kupljen
2005-09-20 11:06 ` Ralf Baechle [this message]
2005-09-20 14:26 ` Michael Uhler
2005-09-20 14:26 ` Michael Uhler
2005-09-20 14:59 ` Ralf Baechle
2005-09-20 11:01 ` Ralf Baechle
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