On 04/08/2010, at 2:13, Roch Bourbonnais <roch.bourbonn...@sun.com> wrote:
> > Le 27 mai 2010 à 07:03, Brent Jones a écrit : > >> On Wed, May 26, 2010 at 5:08 AM, Matt Connolly >> <matt.connolly...@gmail.com> wrote: >>> I've set up an iScsi volume on OpenSolaris (snv_134) with these commands: >>> >>> sh-4.0# zfs create rpool/iscsi >>> sh-4.0# zfs set shareiscsi=on rpool/iscsi >>> sh-4.0# zfs create -s -V 10g rpool/iscsi/test >>> >>> The underlying zpool is a mirror of two SATA drives. I'm connecting from a >>> Mac client with global SAN initiator software, connected via Gigabit LAN. >>> It connects fine, and I've initialiased a mac format volume on that iScsi >>> volume. >>> >>> Performance, however, is terribly slow, about 10 times slower than an SMB >>> share on the same pool. I expected it would be very similar, if not faster >>> than SMB. >>> >>> Here's my test results copying 3GB data: >>> >>> iScsi: 44m01s 1.185MB/s >>> SMB share: 4m27 11.73MB/s >>> >>> Reading (the same 3GB) is also worse than SMB, but only by a factor of >>> about 3: >>> >>> iScsi: 4m36 11.34MB/s >>> SMB share: 1m45 29.81MB/s >>> > > <cleaning up some old mail> > > Not unexpected. Filesystems have readahead code to prefetch enough to cover > the latency of the read request. iSCSI only responds to the request. > Put a filesystem on top of iscsi and try again. As I indicated above, there is a mac filesystem on the iscsi volume. Matt. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
