Wild guess: Client is mounting with the "sync" option?<br><br>The sync export option on the server is needed and normal, but the client mount option really slows things down and isn't proportionately helpful.<br>
<br>Providing more details (stuff like `cat /proc/mounts`) will help folks give you less wild guesses. ;)<br><br><div class="gmail_quote">On Thu, Sep 15, 2011 at 10:43 AM, David Tomaschik <span dir="ltr"><<a href="mailto:david@systemoverlord.com">david@systemoverlord.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">At work, we have an OS X 10.5 NFS server with a Ubuntu Server 10.04<br>
client. (Among others.) We're running backups via NFS using Amanda,<br>
and the backups seem to be pegging at exactly 100Mbit/s. Both<br>
machines are connected via GigE, full-duplex. (Confirmed via mii-tool<br>
and system preferences.)<br>
<br>
I can read from the storage array on the XServe at ~200MB/s via dd.<br>
Additionally, Amanda can read from clients remotely (SSH transport) at<br>
400-500 Mbit/s, so it doesn't seem to be an issue with the backup<br>
server.<br>
<br>
I've tried tweaking NFS rsize with no noticeable impact. Any other<br>
hints to improve NFS performance? Anyone with experience with OS X as<br>
an NFS host? Most of the information I find online is OS X as an NFS<br>
client.<br>
<br>
--<br>
David Tomaschik, RHCE, LPIC-1<br>
System Administrator/Open Source Advocate<br>
OpenPGP: 0x5DEA789B<br>
<a href="http://systemoverlord.com" target="_blank">http://systemoverlord.com</a><br>
<a href="mailto:david@systemoverlord.com">david@systemoverlord.com</a><br>
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