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Date:      Mon, 21 Feb 2005 14:38:41 -0600
From:      Eric Anderson <anderson@centtech.com>
To:        David Rice <drice@globat.com>
Cc:        Robert Watson <rwatson@freebsd.org>
Subject:   Re: High traffic NFS performance and availability problems
Message-ID:  <421A46D1.1010003@centtech.com>
In-Reply-To: <200502211234.51976.drice@globat.com>
References:  <Pine.NEB.3.96L.1050219121641.67347L-100000@fledge.watson.org> <200502211234.51976.drice@globat.com>

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David Rice wrote:
> Here are the snapshots of the output you requested. These are from the NFS 
> server. We have just upgraded them to 5.3-RELEASE as so many have recomended.
> Hope that makes them more stable. The performance still needs some attention.
[..snip..]
> Disks amrd0   da0 pass0 pass1 pass2                       intrn   100 0: clk
> KB/t  22.41  0.00  0.00  0.00  0.00                114288 buf
> tps     602     0     0     0     0                   510 dirtybuf
> MB/s  13.16  0.00  0.00  0.00  0.00                 70235 desiredvnodes
> % busy  100     0     0     0     0 


I think you are spindle bound - looks like the disk is maxed (heavy writes?).  What kind of disk subsystem do you have?

Eric



-- 
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Eric Anderson        Sr. Systems Administrator        Centaur Technology
I have seen the future and it is just like the present, only longer.
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