title: Linux diskless client nfs throughput
body: <p>I have a gentoo diskless client that mounts using nfs and it seems like the throughput of nfs is slow.  iperf show the network able to push 770 Mb/s and hdparm shows the sata disk on the server at 90 Mb/s, but doing a dd across the network only shows up as 10 Mb/s  (is about 40 Mb/s when the same test is done on the server to a third machine).</p>
  
  <p>Odd thing is that the pxeboot mounts nfsver2.  Not sure if this is a problem or not, but other mounts after boot mount as nfsver3.  Really seems like it is a config problem with nfs somewhere, but I have not found anything that makes a difference.  Doing rsize=8k,wsize=8k, noatime, async.  Anyone have any tips to look for or is this 10 Mb/s really the throughput I should expect for a diskless client?</p>