Oracle-L: RE: HPUX SCSI Performance

From: david hill <david.hill_at_lechateau.ca>
Date: Fri, 21 Feb 2003 05:58:51 -0800
Message-ID: <F001.005542C1.20030221055851@fatcity.com>

It turns out it's a bug with vxfs on all Itanium system's

HP is starting to work on a patch for it hopefully it'll be out soon

Thanks for the input though.

David Hill

-----Original Message-----
Sent: Thursday, February 20, 2003 9:39 PM To: Multiple recipients of list ORACLE-L

Have you checked the queue depths? There are several parameters your admin can use to tune SCSI performance, but this is typically the first place to start with OLTP systems. You might also look at your buffer cache settings (HP-UX ships with these set at 10-20% I believe; in an Oracle environment, smaller cache often makes sense (anything from 2-10 depending on your I/O patterns).

Rich

-----Original Message-----
Sent: Wednesday, February 05, 2003 2:09 PM To: Multiple recipients of list ORACLE-L

HPUX 11i version 1.6 for itanium on vxfs

-----Original Message-----
<mailto:Rich.Jesse_at_qtiworld.com> ]
Sent: Wednesday, February 05, 2003 12:14 PM To: Multiple recipients of list ORACLE-L

What OS? What filesystem?

Rich Jesse                           System/Database Administrator 
rjesse_at_qtiworld.com                  Quad/Tech International, Sussex, WI USA

-----Original Message-----
Sent: Wednesday, February 05, 2003 10:39 AM To: Multiple recipients of list ORACLE-L

Hi Guys
I'm hoping there is sysadmin in the list that can help me.

We just received a brand new Itanium Server to play with It has 2 U320 disk not striped or mirrored or anything

Doing test and monitoring them through glance, is giving me a transfer rate of about 15Megs a sec
These should be up around 60 - 80 megs right?

My sysadmin says there is nothing he can do. Can someone tell if there is some sort setting he hasn't set or a config somewhere?

Thanks.
David Hill
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Author: Jesse, Rich
INET: Rich.Jesse_at_qtiworld.com

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Author: david hill
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