On Thu, Dec 12, 2013 at 10:29:08AM -0800, Christoph Hellwig wrote: > Looks reasonable, but it might be worth to add a blurb on how you > arrived at the magic 8 threads per cpu. OK - that was simply that processing with 8 threads is more than enough to saturate a single CPU on fast devices so we don't need any more parallelism in this case. And when you have large slow devices, 8 threads is more than enough to saturate the IO subsystem.... I'll add a comment mentioning that. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs