Re: 12 Veliciraptors again w/x4 card (1.1gbytes/sec aggregate read)!

[Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>]

On Mon, 7 Jul 2008, Justin Piszcz wrote:

> On Mon, 7 Jul 2008, Justin Piszcz wrote:
>
> > On Mon, 7 Jul 2008, Justin Piszcz wrote:
> >
> > > Each PCI-e x1 card has 1 veliciraptor on it now.
> > > Got an x4 card wit 4 sata ports:
> > >
> > > Not quite the > 1 gbyte/sec I was hoping for in regards to the reads
> > > but pretty close!
> >
> > Going to remove one of the drives from the x1 card and put it on the x4
> > card instead, then I will use all 4 SATA ports on the x4 and hopefully get
> > better bw.
>
> Four drives on the x4 card, MAX bandwidth for every disk.
>
> p34:~# dd if=/dev/sdi of=/dev/null bs=1M &
> [1] 4720
> p34:~# dd if=/dev/sdj of=/dev/null bs=1M &
> [2] 4721
> p34:~# dd if=/dev/sdk of=/dev/null bs=1M &
> [3] 4722
> p34:~# dd if=/dev/sdl of=/dev/null bs=1M &
> [4] 4723
> p34:~#
>
> 120MiB/s per each one!
>
> Re-running dd test with all 12 disks:
>
> 1.1 gigabytes per second read!

bonnie++ benchmarks:

http://home.comcast.net/~jpiszcz/20080707/veliciraptors_with_x4.html

--
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html