My advice is to call Support and open a problem. My guess is that you
would be directed to change to the nvTurbo form of the database, if you
haven't already, and if the problem persists, to then run a tool they can
supply called "gdbprof" which will take snap shots of what ovwdb is doing
so that it can be examined. The problem you describe is not normal and
probably cannot be solved by any simple tuning you can do. As I said in my
previous update, all that was learned by using the -b parameter has already
been incorporated into the code under the allocation done for the cache
size. So you are getting the best possible buffer sizes based upon that
already.
James Shanks
Team Leader, Level 3 Support
Tivoli NetView for UNIX and NT
"Peter Anderson" <pETERanderson AT westpac.com DOT au> on 10/11/2000 06:53:01 PM
Please respond to IBM NetView Discussion <nv-l AT tkg DOT com>
To: "Netview List (E-mail)" <nv-l AT tkg DOT com>
cc: (bcc: James Shanks/Tivoli Systems)
Subject: Re: [NV-L] ovwdb startup option "-b"
Hi Leslie,
We have 24842 objects and a cache of 50000 running on a SUN Enterprise 450
(2x450Mhz,1GbRAM) ad it still runs slow as a dog at times. ovwdb is quite
often the culprit - even if netmon is not running. It will use 100% of one
CPU ad cause ovw_binary to stop processing I/O to the user for sometimes
more than 5 mins.
Can you please investigate this -b option further with the developers?
Thanks,
Peter Anderson
Senior Communications Analyst
Data Communications Support
Ph: 9902(5)5938
-----Original Message-----
From: SZEWCZYK, Jack
Sent: Wednesday, October 11, 2000 11:30 PM
To: ANDERSON, Peter
Subject: FW: Re: [NV-L] ovwdb startup option "-b"
-----Original Message-----
From: Leslie Clark/Southfield/IBM
Sent: Wednesday, 11 October 2000 12:27
To: IBM NetView Discussion
Cc:
Subject: Re: [NV-L] ovwdb startup option "-b"
-----Original Message-----
From: Leslie Clark/Southfield/IBM
Sent: Wednesday, 11 October 2000 12:27
To: IBM NetView Discussion
Cc:
Subject: Re: [NV-L] ovwdb startup option "-b"
Well, the commandline usage info does not match the man page for ovwdb.
I'll bet that option does not actually do anything any more. The one you
want
to mess with is the Cache. Make sure that is at least 20% greater than the
number of objects shown in the output of 'ovobjprint -S'. If cache is close
to
or less than that, and it defaults to 5000, you will indeed see super
slowness.
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
Detroit
"Peter Anderson" <pETERanderson AT westpac.com DOT au>@tkg.com on 10/11/2000
02:40:52 AM
Please respond to IBM NetView Discussion <nv-l AT tkg DOT com>
Sent by: owner-nv-l AT tkg DOT com
To: "Netview List (E-mail)" <nv-l AT tkg DOT com>
cc:
Subject: [NV-L] ovwdb startup option "-b"
Hi there,
I found a command line startup option for ovwdb which looks interesting to
try ...
However I can't find ant doco for it (so far ...)
The output from "ovwdb -h" reports:
Usage: ovwdb [-O] [-d dbname] [-P <port>] [-n <number_of_objects>] [-b
db_buffer_size]
-O Assume started by ovspmd
-d dbname Set name of database
-P port Use <port> as the TCP port number
-n number_of_objects Cache only a limited number of objects
-b db_buffer_size Use a temporary <buffer_size> byte buffer in
the database to increase performance
I'm interested in trying the -b option as our system runs REAL slow.
nvsetup doesn't let you change most of these options, so I'd have to edit
the lrf file.
Anyone know if there is a default size setting, or is there none at all?
We have Netview Unix 6.01
Regards,
Peter Anderson
Senior Communications Analyst
Westpac Banking Corporation
Ph: 0011 61 2 99025938
<Remove ETER from my address to reply>
Any views or opinions presented are solely those of the author and do not
necessarily represent those of Westpac Banking Corporation.
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