From: Sven Geggus <sven@geggus.net>
Subject: 2.4 -> 2.6 transition major performance issues
Date: Tue, 7 Jun 2005 10:21:26 +0200
Message-ID: <20050607082126.GA17624@geggus.net>
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To: nfs@lists.sourceforge.net
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Hi there,

while trying to update my Debian sarge system from Kernel 2.4. to 2.6 I came
across a very strange Problem with The Kernel NFS-Server.

I use a somewhat slow Machine (666 MHz VIA Samuel) as an NFS-Server for a
diskless Linux Workstation (root-NFS) and home directories.

This works fine as long as the Server is running vanilla 2.4.31. Now, after
updating the Kernel to linux vanilla 2.6.11.10 the System will get almost
unusable if NFS activity occurs! E.g. building a Kernel inside of an
NFS-mounted home-directory gives me a System load of about 2.0 on the
Server.

Compared to Kernel 2.4 the boot-time of the diskless Machine is increased by
a faktor of two running Kernel 2.6.

Do you have any hint where I could start to debug this? I already made
shure, that NFSv3 is used in any case.

Sven

-- 
This golden age of communication Means everyone talks at the same time
(Lyrics of "New Model Army" song "225")

/me is giggls@ircnet, http://sven.gegg.us/ on the Web


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