hi,

> On Tue, Dec 09, 2003 at 03:21:18PM +0100, Manuel Bouyer wrote:
> > I did a test with solaris and NetBSD:
> > the test was
> > time dd if=/dev/zero of=toto bs=128k count=10000
> > time dd if=toto bs=128k of=/dev/null
> > I ran these 5 times, and did an average of the time returned, excluding
> > times clearly too high (the server is in production, and the 100Mb/s
> > link is shared with other systems).
> > The server is a NetBSD/alpha 1.6.1_STABLE, with an array of 6 SCSI disks on 2
> > SCSI busses for the partition I ran the tests on, and a gigabit network
> > interface. It has 20 nfsds running.
> > 
> > The solaris client is running solaris9 on a UltraSPARC-IIi 333MHz with 256MB
> > RAM. Default mount options (remote/read/write/nosuid/hard/intr/xattr).
> > The NetBSD client is running current as of today, on a UltraSPARC-IIi
> > 400Mhz with 256MB RAM. Also using amd's default mount options
> > (nfs (nosuid, nodev)).

- what's your network environment?  higher latency than normal 100baseTX link?
- "default" means, netbsd uses udp and solaris uses tcp?
- how about cpu usage?
- do you have packet dumps or such?


FYI, the following is a result on my notebook.
(p3-700, 384M memory, 100baseTX, TCP, 4 nfsiods)

kaeru% time dd if=/dev/zero of=a bs=128k count=8000
8000+0 records in
8000+0 records out
1048576000 bytes transferred in 94.801 secs (11060811 bytes/sec)
dd if=/dev/zero of=a bs=128k count=8000  0.17s user 15.25s system 16% cpu 1:34.81 total
kaeru% time dd of=/dev/zero if=a bs=128k count=8000
8000+0 records in
8000+0 records out
1048576000 bytes transferred in 99.565 secs (10531572 bytes/sec)
dd of=/dev/zero if=a bs=128k count=8000  0.10s user 10.23s system 10% cpu 1:39.78 total

YAMAMOTO Takashi