[distcc] Using distcc to stress NFS

Martin Pool mbp at sourcefrog.net
Tue Jun 29 16:42:34 MDT 2010

On 26 June 2010 01:32, Hardik Patel <hardik2141 at gmail.com> wrote:
> Hello,
> I am arranging a setup to test NFSv4 code. I will be using 3 client machines
> connected to server which had some source to build. The source directory
> that resides on server will be mounted on rest 3 machines using NFSv4. Is it
> possible to give command make (using distcc) on one of the machines but
> instruct all machines to take files from central repository (i.e. server) ?

It depends a bit what kind of stress you're trying to induce.  If you
just want a lot of load, distcc is probably not a very interesting way
to induce it compared to running say dbench.  If you are looking for
cache coherency bugs then perhaps running multiple make jobs from
multiple clients simultaneously (without dbench) would be useful.  But
I probably would not test it that way myself because any failures that
occur will probably be timing dependent and hard to debug or
reproduce, so all you'll know is "there's a bug in the makefile or in
the nfs4 server or client".


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