<div dir="ltr">We're essentially trying to shove a 10GB of water through a 1GB pipe. I know. It wasn't my idea. So far the only thing I'm trying to do is update the firmware - but of course that's failing to. I'll try your writing to /dev/null idea.<div>
<br></div><div>Mike Bean<br><div><br></div></div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, May 3, 2013 at 1:53 PM, Jim Ockers <span dir="ltr"><<a href="mailto:ockers@ockers.net" target="_blank">ockers@ockers.net</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>Hi Mike,<br>
<br>
What does it mean "behind a 1GB router" ? Please describe the
network topology in more detail. Is the NAS in a different subnet
than the client? What kind of router is it?<br>
<br>
What is the bandwidth utilization on the switch ports for the
client & server? Any errors reported in the switch event
log? Any errors reported in the router event log? What is the
CPU load/usage on this "1GB router"?<br>
<br>
When you un-tar the tarball from the NAS, what are you writing the
result to? Can you try writing it to /dev/null and see if it's
any faster? It would be faster if the problem was slowness in the
filesystem/device that you were writing the un-tarred files to.<br>
<br>
Jim<br>
<pre cols="72">--
Jim Ockers, P.E., P.Eng. (<a href="mailto:ockers@ockers.net" target="_blank">ockers@ockers.net</a>)
Contact info: <a href="http://www.ockers.net/" target="_blank">http://www.ockers.net/</a>
</pre><div><div class="h5">
On 5/3/13 1:40 PM, Mike Bean wrote:<br>
</div></div></div>
<blockquote type="cite"><div><div class="h5">
<div dir="ltr">Peculiar problem, haven't the slightest idea where
to start. Need advice!
<div><br>
</div>
<div>RHEL5.4 box with an NFS mount point to a NAS
storage device into a NAS device with jumbo frames disabled.
NAS has a samba share capability.</div>
<div><br>
</div>
<div>Users are convinced it's too slow.</div>
<div>At least one user is convinced that if he uses
smbclient to untar the same tarball, it takes, 2 maybe 3
minutes.</div>
<div>(My manual untar attempt of the same tarball has
been running for 25 minutes and climbing.)</div>
<div><br>
</div>
<div>NAS is in a one-volume raid 6 - seven drives.
Users not showing much interest in splitting it into multiple
volumes.</div>
<div><br>
</div>
<div>Network guys are convinced the slowness is because
it's behind a 1GB router;</div>
<div>Not seeing anything that really worries me in
/var/log/messages</div>
<div>Not seeing any unusual processes in top</div>
<div>memory use isn't excessive - not swapping</div>
<div><br>
</div>
<div>
network mtu is at 1500 - wouldn't matter, since our switch
ports are at 1500 anyway,</div>
<div><br>
</div>
<div>My own search attempts coming up dry. Just
vaguely related academic material that doesn't even give me a
good idea where to start!</div>
<div><br>
</div>
<div>I approach the oracle!</div>
<div><br>
</div>
<div>Mike</div>
</div>
<br>
<fieldset></fieldset>
<br>
</div></div><pre>_______________________________________________
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</blockquote>
<br>
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