Re: 2.4 vs. 2.6 nfs client performance

[Jason Holmes <jholmes@psu.edu>]

Trond Myklebust wrote:
> 
> IOW this all appears to be doing synchronous I/O only (both in the
> case of 2.4.22 and 2.6.0).
> Note: most of these RPC calls do indeed appear to be something other
> than WRITE calls. Are they perhaps GETATTR calls? Have you for
> instance set 'noac', 'actimeo' or something like that?

This was my mistake - I had changed the export to sync for a test right
before the debug runs and forgot to change it back.

> Could you please try using
> 
> echo "9" >/proc/sys/sunrpc/nfs_debug

Files should be up there (http://magicbus.cac.psu.edu/nfs).  I do have
to admit that something odd is going on - 2.4.22 still is faster than
2.6.0-test9-bk17 and test9-bk17 is still showing the large amount of
commits, but both of them are running faster than they did before on the
sync mounts and I'm not sure what I might have changed to cause this.

Thanks,

--
Jason Holmes


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