On Mon, 9 Jun 2008, Tom Buskey wrote: > > time gdd if=/dev/zero bs=1048576 count=10240 of=/data/video/x > > real 0m13.503s > user 0m0.016s > sys 0m8.981s
These results are not quite valid. /dev/zero only produces null bytes which allows zfs to store the data as sparse files (i.e. write less actual data to disk). The size of the data written should be at least 2X (preferably a lot more) than the size of installed RAM since otherwise the write may be simply cached to RAM with very little I/O. I suggest using iozone (http://www.iozone.org/) for doing this sort of testing. Bob ====================================== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
