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Re: Slow performance writing to NetApp filer

On Mon, 19 Nov 2007 at 3:30pm, Joshua Baker-LePain wrote

I just submitted <https://bugzilla.redhat.com/show_bug.cgi?id=391021> regarding an odd issue we're having. Fedora (both 7 and 8) have horribly slow performance when writing to our NetApp FAS3020 filer. I've tested on 2 sets of hardware (i386 and x86_64, with tg3 and e1000 NICs). No matter what I try, it won't go faster than ~5MB/s. The same hardware running CentOS-5 gets ~50MB/s. Performance is just fine pointing the Fedora boxes at a Panasas filer.

Has anybody else run into this?  It seems a rather odd bug to me.

In response to Warren's email (which I saw in the list archives as I forgot to mention that I'm subscribed to the digest only) all testing was done using NFSv3 only. I tried without any mount options, and also with explicit 32K block sizes.

Joshua Baker-LePain
QB3 Shared Cluster Sysadmin

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