On Wed, 17 Nov 2010 16:31:32 -0500, Ross Walker <rswwal...@gmail.com> wrote: > On Wed, Nov 17, 2010 at 3:00 PM, Pasi Kärkkäinen <pa...@iki.fi> wrote: >> On Wed, Nov 17, 2010 at 10:14:10AM +0000, Bruno Sousa wrote: >>> Hi all, >>> >>> Let me tell you all that the MC/S *does* make a difference...I had a >>> windows fileserver using an ISCSI connection to a host running >>> snv_134 >>> with an average speed of 20-35 mb/s...After the upgrade to snv_151a >>> (Solaris 11 express) this same fileserver got a performance boost >>> and now >>> has an average speed of 55-60mb/s. >>> >>> Not double performance, but WAY better , specially if we consider >>> that >>> this performance boost was purely software based :) >>> >> >> Did you verify you're using more connections after the update? >> Or was is just *other* COMSTAR (and/or kernel) updates making the >> difference.. > > This is true. If someone wasn't utilizing 1Gbps before MC/S then going > to MC/S won't give you more, as you weren't using what you had (in > fact added latency in MC/S may give you less!). > > I am going to say that the speed improvement from 134->151a was due to > OS and comstar improvements and not the MC/S. > > -Ross
Well, with the snv_134 the storage and fileserver used a single gigabit connection for their ISCSI traffic. After the upgrade to snv_151a, the fileserver and storage are capable of using 2 gigabit connections, in a round-robin fashion i think. So if this only MC/S or not, i don't have technical expertise for confirm it or not, but it does makes a big difference in my environment. Bruno -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
