On Wed, Feb 24, 2010 at 12:43:56PM +0800, Wu Fengguang wrote:

On Wed, Feb 24, 2010 at 12:24:14PM +0800, Dave Chinner wrote:

quoted

On Wed, Feb 24, 2010 at 02:29:34PM +1100, Dave Chinner wrote:

quoted

That's doing a cached read out of the server cache, right? You
might find the results are different if the server has to read the
file from disk. I would expect reads from the server cache not
to require much readahead as there is no IO latency on the server
side for the readahead to hide....

FWIW, if you mount the client with "-o rsize=32k" or the server only
supports rsize <= 32k then this will probably hurt throughput a lot
because then readahead will be capped at 64k instead of 480k....

I should have mentioned that in changelog.. Hope the updated one
helps.

Sorry, my fault for not reading the code correctly.

Cheers,

Dave.
-- 
Dave Chinner
david@fromorbit.com

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/ .
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>