On Mon, Feb 7, 2011 at 3:14 PM, Bill Sommerfeld <sommerf...@alum.mit.edu> wrote: > On 02/07/11 11:49, Yi Zhang wrote: >> >> The reason why I >> tried that is to get the side effect of no buffering, which is my >> ultimate goal. > > ultimate = "final". you must have a goal beyond the elimination of > buffering in the filesystem. > > if the writes are made durable by zfs when you need them to be durable, why > does it matter that it may buffer data while it is doing so? > > - Bill
If buffering is on, the running time of my app doesn't reflect the actual I/O cost. My goal is to accurately measure the time of I/O. With buffering on, ZFS would batch up a bunch of writes and change both the original I/O activity and the time. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
