Jeff Garzik wrote:
..
Thus, the "SX4 challenge" is a challenge to developers to figure out the
most optimal configuration for this hardware, given the existing MD and
DM work going on.
..
This sort of RAID optimization hardware is not unique to the SX4,
so hopefully we can work out a way to ta
Promise just gave permission to post the docs for their PDC20621 (i.e.
SX4) hardware:
http://gkernel.sourceforge.net/specs/promise/pdc20621-pguide-1.2.pdf.bz2
joining the existing PDC20621 DIMM and PLL docs:
http://gkernel.sourceforge.net/specs/promise/pdc20621-pguide-dimm-1.6.pdf.bz2
http://g
On Thu, 17 Jan 2008, Neil Brown wrote:
On Wednesday January 16, [EMAIL PROTECTED] wrote:
p34:~# mdadm /dev/md3 --zero-superblock
p34:~# mdadm --examine --scan
ARRAY /dev/md0 level=raid1 num-devices=2
UUID=f463057c:9a696419:3bcb794a:7aaa12b2
ARRAY /dev/md1 level=raid1 num-devices=2
UUID=98e494
On Wednesday January 16, [EMAIL PROTECTED] wrote:
> p34:~# mdadm /dev/md3 --zero-superblock
> p34:~# mdadm --examine --scan
> ARRAY /dev/md0 level=raid1 num-devices=2
> UUID=f463057c:9a696419:3bcb794a:7aaa12b2
> ARRAY /dev/md1 level=raid1 num-devices=2
> UUID=98e4948c:c6685f82:e082fd95:e7f45529
>
On Wed, 16 Jan 2008, Justin Piszcz wrote:
p34:~# mdadm /dev/md3 --zero-superblock
p34:~# mdadm --examine --scan
ARRAY /dev/md0 level=raid1 num-devices=2
UUID=f463057c:9a696419:3bcb794a:7aaa12b2
ARRAY /dev/md1 level=raid1 num-devices=2
UUID=98e4948c:c6685f82:e082fd95:e7f45529
ARRAY /dev/md2 le
p34:~# mdadm /dev/md3 --zero-superblock
p34:~# mdadm --examine --scan
ARRAY /dev/md0 level=raid1 num-devices=2
UUID=f463057c:9a696419:3bcb794a:7aaa12b2
ARRAY /dev/md1 level=raid1 num-devices=2
UUID=98e4948c:c6685f82:e082fd95:e7f45529
ARRAY /dev/md2 level=raid1 num-devices=2
UUID=330c9879:73af7d
On Thu, 17 Jan 2008, Al Boldi wrote:
Justin Piszcz wrote:
On Wed, 16 Jan 2008, Al Boldi wrote:
Also, can you retest using dd with different block-sizes?
I can do this, moment..
I know about oflag=direct but I choose to use dd with sync and measure the
total time it takes.
/usr/bin/time -
On Thu, 17 Jan 2008, Al Boldi wrote:
Justin Piszcz wrote:
On Wed, 16 Jan 2008, Al Boldi wrote:
Also, can you retest using dd with different block-sizes?
I can do this, moment..
I know about oflag=direct but I choose to use dd with sync and measure the
total time it takes.
/usr/bin/time -
On Tuesday January 15, [EMAIL PROTECTED] wrote:
> On Wed, 16 Jan 2008 00:09:31 -0700 "Dan Williams" <[EMAIL PROTECTED]> wrote:
>
> > > heheh.
> > >
> > > it's really easy to reproduce the hang without the patch -- i could
> > > hang the box in under 20 min on 2.6.22+ w/XFS and raid5 on 7x750GB.
>
Justin Piszcz wrote:
> On Wed, 16 Jan 2008, Al Boldi wrote:
> > > Also, can you retest using dd with different block-sizes?
>
> I can do this, moment..
>
>
> I know about oflag=direct but I choose to use dd with sync and measure the
> total time it takes.
> /usr/bin/time -f %E -o ~/$i=chunk.txt bas
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On Wed, 16 Jan 2008, Greg Cormier wrote:
What sort of tools are you using to get these benchmarks, and can I
used them for ext3?
Very interested in running this on my server.
Thanks,
Greg
You can use whatever suits you, such as untar kernel source tree, copy files,
untar backups, etc--, y
What sort of tools are you using to get these benchmarks, and can I
used them for ext3?
Very interested in running this on my server.
Thanks,
Greg
On Jan 16, 2008 11:13 AM, Justin Piszcz <[EMAIL PROTECTED]> wrote:
> For these benchmarks I timed how long it takes to extract a standard 4.4
> GiB
On Wed, 16 Jan 2008, Al Boldi wrote:
Justin Piszcz wrote:
For these benchmarks I timed how long it takes to extract a standard 4.4
GiB DVD:
Settings: Software RAID 5 with the following settings (until I change
those too):
Base setup:
blockdev --setra 65536 /dev/md3
echo 16384 > /sys/block/m
Justin Piszcz wrote:
> For these benchmarks I timed how long it takes to extract a standard 4.4
> GiB DVD:
>
> Settings: Software RAID 5 with the following settings (until I change
> those too):
>
> Base setup:
> blockdev --setra 65536 /dev/md3
> echo 16384 > /sys/block/md3/md/stripe_cache_size
> e
On Wed, 16 Jan 2008, Justin Piszcz wrote:
For these benchmarks I timed how long it takes to extract a standard 4.4 GiB
DVD:
Settings: Software RAID 5 with the following settings (until I change those
too):
http://home.comcast.net/~jpiszcz/sunit-swidth/newresults.html
Any idea why an suni
For these benchmarks I timed how long it takes to extract a standard 4.4
GiB DVD:
Settings: Software RAID 5 with the following settings (until I change
those too):
Base setup:
blockdev --setra 65536 /dev/md3
echo 16384 > /sys/block/md3/md/stripe_cache_size
echo "Disabling NCQ on all disks..."
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