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Date: Thu, 21 Apr 2005 14:45:32 +0200
From: Claus Guttesen <kometen@gmail.com>
To: Mike Tancsa <mike@sentex.net>
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cc: freebsd-performance@freebsd.org
cc: Eric Anderson <anderson@centtech.com>
Subject: Re: some simple nfs-benchmarks on 5.4 RC2
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> > > elin% dd if=3D/dev/zero of=3D/nfssrv/dd.tst bs=3D1024 count=3D1048576
> > > 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=3D/dev/zero of=3Ddd.tst bs=3D1024 count=3D1048576
> >1048576+0 records in
> >1048576+0 records out
> >1073741824 bytes transferred in 8.972321 secs (119672693 bytes/sec)
> >
> >Must faster. FreeBSD 5.4 RC2.
>=20
> FYI, here is on  an Areca SATA in Raid5, 4 disks 3Ghz P4
>=20
> [nfs]# dd if=3D/dev/zero of=3Ddd.tst bs=3D1024 count=3D1048576
> 1048576+0 records in
> 1048576+0 records out
> 1073741824 bytes transferred in 16.416051 secs (65408047 bytes/sec)
> [nfs]#
>=20
> [nfs]# dd if=3D/dev/zero of=3Ddd.tst bs=3D2048 count=3D1048576
> 1048576+0 records in
> 1048576+0 records out
> 2147483648 bytes transferred in 30.371264 secs (70707747 bytes/sec)
> [nfs]#
>=20
> Same box, but to an ad0 partition (similar Segate drive)
> [nfs]# dd if=3D/dev/zero of=3Ddd.tst bs=3D512 count=3D1048576
> 1048576+0 records in
> 1048576+0 records out
> 536870912 bytes transferred in 11.096809 secs (48380658 bytes/sec)
> [nfs]#
>=20
> RELENG_5 from today.

Thank you.

regards
Claus