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.

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Joshua Baker-LePain
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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.



NFSv3? NFSv4? iSCSI?

Have you tried all three?

Warren Togami
wtogami@redhat.com

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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.


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Joshua Baker-LePain
QB3 Shared Cluster Sysadmin
UCSF

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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.
hmm... Would it be possible to post (in the bz) a bzip2 binary network
trace? Something similar to
tshark -w /tmp/bz391021 -i <eth?> host <server>
bzip2 /tmp/bz391021

>
> Has anybody else run into this? It seems a rather odd bug to me.
No and Yes this seems very odd since we test all the
time against Netapp filers...

steved.


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