[SunHELP] U1 Disc IO || Net IO preformance problems.

[Peter Stokes]

Hi Sean

Try setting hdx on the setup as there have been quite a few postings over
the years about fdx with certain switches. If that works ok, then look into
the negotiation issues. There have been quite a few postings on this and
sunmanagers on the subject from memory.

Peter

-----Original Message-----
From: sunhelp-admin at sunhelp.org [mailto:sunhelp-admin at sunhelp.org]On
Behalf Of Sean
Sent: 30 October 2002 05:36
To: sunhelp at sunhelp.org
Subject: [SunHELP] U1 Disc IO || Net IO preformance problems.


I just managed to get OpenBSD installed on a recently aquired U1(140).
I popped in a 4Gb Baracouda and an 18 Gb Fujitsu brick as well as an HME
100Mb NIC. (Updated to OBP3.11.1).

The problem is that I was going to use the U1 as a replacment for an old
K62-350 that is having some problems.  After setting all this up I decided
to do some transfer tests via FTP (as that's what will be used to shuttle
things around) and the results were not very impressive.

Avg throughput (both ways) is 16.5 Mb/s and after a 8-15MBs are transfered
it just throttles right down to a few hundred K (200kpbs+).  Keep in mind
this is on a 100Mb switch and all the machines are using 100Mb Full duplex
cards (fxp's).  If I use the on board nic it works at 0.9 Mbps steady
(which is normal for 10BT).

Originally thinking this was a drive problem I tried a few other drives I
had in other machines with the same affect.  Downloading from the U1 is
alright and doesn't stall or throttle down.  Though uploading to it not
only throttles but ftpd spends LOTS of time in netio,sleep.

Just as a comparission the old i386 machine can pump out 55Mbs per
transfer easily and considering the size of the backups the uploading
capacity (aka most of what the machine will be dealing with) is currenlty
unusable due to the excessive throttling and less than stellar throughput.

If anyone can give me any idea why this is happening or even just a place
to start looking/working I'd appriciate it.

--
Sean
"You asked me how to cure your headache, use a gun."
	- Sneaker Pimps - Think Harder
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