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Date: Wed, 20 Apr 2005 23:57:08 -0400
To: Claus Guttesen <kometen@gmail.com>,
	Eric Anderson <anderson@centtech.com>
From: Mike Tancsa <mike@sentex.net>
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cc: freebsd-performance@freebsd.org
Subject: Re: some simple nfs-benchmarks on 5.4 RC2
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At 04:47 AM 20/04/2005, Claus Guttesen wrote:
> > elin% dd if=/dev/zero of=/nfssrv/dd.tst bs=1024 count=1048576
> > 1048576+0 records in
> > 1048576+0 records out
> > 1073741824 bytes transferred in 21.373114 secs (50237968 bytes/sec)
> >
>
>Follow-up, did the same dd on a Dell 2850 with a LSI Logic (amr), 6
>scsi-disks in a raid 5:
>
>frodo~%>dd if=/dev/zero of=dd.tst bs=1024 count=1048576
>1048576+0 records in
>1048576+0 records out
>1073741824 bytes transferred in 8.972321 secs (119672693 bytes/sec)
>
>Must faster. FreeBSD 5.4 RC2.

FYI, here is on  an Areca SATA in Raid5, 4 disks 3Ghz P4

[nfs]# dd if=/dev/zero of=dd.tst bs=1024 count=1048576
1048576+0 records in
1048576+0 records out
1073741824 bytes transferred in 16.416051 secs (65408047 bytes/sec)
[nfs]#

[nfs]# dd if=/dev/zero of=dd.tst bs=2048 count=1048576
1048576+0 records in
1048576+0 records out
2147483648 bytes transferred in 30.371264 secs (70707747 bytes/sec)
[nfs]#

Same box, but to an ad0 partition (similar Segate drive)
[nfs]# dd if=/dev/zero of=dd.tst bs=512 count=1048576
1048576+0 records in
1048576+0 records out
536870912 bytes transferred in 11.096809 secs (48380658 bytes/sec)
[nfs]#


RELENG_5 from today.