Default rsize and wsize for nfs v3

The /etc/fstab entry used by my nfs client is {server_ip}:/home/{server_user}/{server_path} /home/{client_user}/{client_path}

I wanted to know the rsize and wsize values used by default. I wanted to try out some benchmarks with various values smaller and larger than the default values so that i can arrive at an optimum value for my read heavy setup.

From serverfault

• Don't modify rsize and wsize. Recent NFS servers and clients will work out the best value for you and will probably do a better job than you would as well. :)

  From David Pashley

• If you are on a Linux box, take a look at /proc/mounts. You'll find the current value there. If you specify no value in /etc/fstab, that will be the default (or at least, a value that is considered sane by the system).

  From wzzrd

• I believe the default rsize and wsize are 8192 for both UDP and TCP mounts.

  From Dave Cheney

• These are the options we use most of the time

  vers=3,tcp,rsize=32768,wsize=32768,timeo=600,hard,intr

  From James