Hello Grant,
Friday, May 25, 2007, 6:54:04 PM, you wrote:
It would also be worthwhile doing something like the
following to
determine the max throughput the H/W RAID is giving
you:
# time dd of=raw disk if=/dev/zero bs=1048576
count=1000
or a 2Gbps 6140 with 300GB/10K drives, we get
It would also be worthwhile doing something like the
following to
determine the max throughput the H/W RAID is giving
you:
# time dd of=raw disk if=/dev/zero bs=1048576
count=1000
or a 2Gbps 6140 with 300GB/10K drives, we get ~46MB/s
on a
single-drive RAID-0 array, ~83MB/s on a 4-disk
On Fri, May 25, 2007 at 09:54:04AM -0700, Grant Kelly wrote:
It would also be worthwhile doing something like the following to
determine the max throughput the H/W RAID is giving you:
# time dd of=raw disk if=/dev/zero bs=1048576 count=1000
or a 2Gbps 6140 with 300GB/10K drives, we get
Albert Chin wrote:
I don't think you want to if=/dev/zero on ZFS. There's probably some
optimization going on. Better to use /dev/urandom or concat n-many
files comprised of random bits.
Unless you have turned on compression, that is not the case. By default
there is no optimization for all
