Date: Mon, 9 Jun 2003 12:47:05 -0700 From: Sean Chittenden <sean@chittenden.org> To: Eric Anderson <anderson@centtech.com> Cc: freebsd-performance@freebsd.org Subject: Re: Slow disk write speeds over network Message-ID: <20030609194705.GJ65470@perrin.int.nxad.com> In-Reply-To: <3EE4E156.6030603@centtech.com> References: <3EE4E156.6030603@centtech.com>
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> Ok, I have a file server (NFS) running FreeBSD 4.8-RC1, which is having > incredibly slow disk write speeds. Locally, doing something like: > dd if=/dev/zero of=/partition/testfile > Shows 14MB/s - which is what I expect.. Check your cabling... you may have a bad pair in your cable on your send wires, or at least a crummy pair with high resistance. See if netstat -i has any errors listed. A change in performance that dramatic and only in one direction is disturbing and doesn't sound like a kernel or software issue, though I could be quite wrong. -sc -- Sean Chittenden
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