On Tue, 05 Feb 2013 12:12:22 -0500 Jeff Blaine <jblaine@xxxxxxxxxxxx> wrote: > Thank you for the thorough reply, Steve. It's nice to > read of the progress in 2012, but RHEL 6.3 and what is > supported there is what we have to work with. It is the > latest supported version, as you surely know, so it > seems like we'll have to wait quite awhile before > getting the module's read performance increases. > > We're dealing with 9 US sites, nightly time window (which > we're exceeding) for transferring large amounts of data > over 1.5Mbps links). > > Back to the drawing board. > > Thanks again. > I think you're basically out of luck for now... Long haul links are really a pessimal case for the older code that did synchronous reads and writes. You spend most of your time waiting around for the calls to go back and forth. I believe Sachin is looking at backporting the async read patches for 6.5. The async write code is already in 6.3 (I think). You should definitely open a support case since documented customer demand helps us make the case for including these sorts of changes in an update. -- Jeff Layton <jlayton@xxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
