On 9 Apr 2011, at 12:59, Sašo Kiselkov <skiselkov...@gmail.com> wrote:
> On 04/09/2011 01:41 PM, Edward Ned Harvey wrote: >>> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- >>> boun...@opensolaris.org] On Behalf Of Julian King >>> >>> Actually I think our figures more or less agree. 12 disks = 7 mbits >>> 48 disks = 4x7mbits >> >> I know that sounds like terrible performance to me. Any time I benchmark >> disks, a cheap generic SATA can easily sustain 500Mbit, and any decent drive >> can easily sustain 1Gbit. > > I think he mistyped and meant 7gbit/s. Oops. Yes I did! > >> Of course it's lower when there's significant random seeking happening... >> But if you have a data model which is able to stream sequentially, the above >> is certainly true. > > Unfortunately, this is exactly my scenario, where I want to stream large > volumes of data in many concurrent threads over large datasets which > have no hope of fitting in RAM or L2ARC and with generally very little > locality. Clearly one of those situation where any set up will struggle. > > -- > Saso Julian _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
