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Date:      Sun, 28 Feb 2010 14:56:05 +0000
From:      "Robert N. M. Watson" <rwatson@freebsd.org>
To:        Daniel Braniss <danny@cs.huji.ac.il>
Cc:        stable@freebsd.org, freebsd-fs@freebsd.org, Willem Jan Withagen <wjw@digiware.nl>, =?iso-8859-1?Q?Eirik_=D8verby?= <ltning@anduin.net>, Jeremy Chadwick <freebsd@jdc.parodius.com>
Subject:   Re: mbuf leakage with nfs/udp (was: mbuf leakage with nfs/zfs)
Message-ID:  <DEA988DB-9925-4695-98C6-E5B484FDAD1A@freebsd.org>
In-Reply-To: <E1NlkVg-00068M-Qk@kabab.cs.huji.ac.il>
References:  <20100226174021.8feadad9.gerrit@pmp.uni-hannover.de> <E1Nl6VA-000557-D9@kabab.cs.huji.ac.il> <20100226224320.8c4259bf.gerrit@pmp.uni-hannover.de> <4B884757.9040001@digiware.nl> <20100227080220.ac6a2e4d.gerrit@pmp.uni-hannover.de> <4B892918.4080701@digiware.nl> <20100227202105.f31cbef7.gerrit@pmp.uni-hannover.de> <20100227193819.GA60576@icarus.home.lan> <BD8AC9F6-DF96-41F9-8E92-48A4E5606DC7@anduin.net> <4B89943C.70704@digiware.nl> <20100227220310.GA65110@icarus.home.lan> <E1Nlhzr-0004ci-3W@kabab.cs.huji.ac.il> <F794BAF9-4ADC-48F8-ACC3-C441EF77A8F2@freebsd.org> <E1NlkVg-00068M-Qk@kabab.cs.huji.ac.il>

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On Feb 28, 2010, at 2:52 PM, Daniel Braniss wrote:

> well, I have further reduced the problem, it happens with NFS/UDP =
writes.
> i'll try the wireshark road, but i'm very rusty with RPC, the other =
road is to
> check the changes, my oldest is from late october (RC2) where it's =
happening,=20
> while
> Gerrit tried 8-pre from November and worked, so it will be fun
> trying to nail it down :-)

Fortunately, Wireshark actually has quite a good NFS RPC decoder -- it =
will tell you what operation appears, what the arguments are, interpret =
NFS error codes, etc. In fact, it's an excellent way to learn about =
NFS...

Robert=



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