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Re: TAKE - reintroduce the nfs inode reference cache

To: Steve Lord <lord@xxxxxxx>
Subject: Re: TAKE - reintroduce the nfs inode reference cache
From: Rajagopal Ananthanarayanan <ananth@xxxxxxx>
Date: Tue, 06 Mar 2001 13:01:37 -0800
Cc: Andi Kleen <ak@xxxxxxx>, linux-xfs@xxxxxxxxxxx
References: <200103062056.f26Kuo106999@xxxxxxxxxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
Steve Lord wrote:

> 
> This is f_ops release, not iops, the normal case is from close. A quick
> mod to the code to not do the release in this case but delay it until later
> appears to help. Ananth is going to test it on his 100Mbit network and we
> will see if this helps. However, should the f_ops release code be the culprit
> we may be able to find a simpler way to fix this.


A quick check reveals that the lmddtest's that had problems before
now runs pretty good ... as fast as writing to ext2 over NFS.
In both cases, lmdd (sequential) write is giving about 11.2 Mbyte/sec.

Also, the server runs much "cooler": only about 30-40% cpu utilization,
again comparable to ext2 exported case. Ship it ;-)

ananth.

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