On Tue, Jan 03, 2012 at 09:20:05AM +0100, Yann Dupont wrote: > >As it is, I can't see any material difference between the traces. > >both reads and writes are taking the same amount of time to service, > >so I don't think there's any problem here. > > ok, > > > >I do recall that some years ago that we changed one of the ways we > > Do you recall exactly what some years ago means ? Is this post 2.6.26 era ? The only thing that I remember is Jens switching xfs_buf_wait_unpin from schedule to io_schedule in "block: remove per-queue plugging", which went into Linux 2.6.39. With this processed that wait for buffers to be unpinned now count towards the load average. _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs