Thanks Cary,
thanks, but here is a question ... you say capturing physical IO is redundant ... what about REDO generated by session? Isn't that part of physical writes? If I just concentrate on LIO (I am currently using "Logical IO' (statistic#9 in 9202).
Currently I am concentrating on following statistics to create a matrix
9 -- session logical reads
12 -- CPU used by this session
20 -- session pga memory
21 -- session pga memory max
42 -- physical reads
46 -- physical writes
115 -- redo size
236 -- bytes sent via SQL*Net to client
237 -- bytes received via SQL*Net from client
not sure if all of them will matter in the end, but at-least it is a start for me.
Another problem is capturing the work done by background processes on behalf of these sessions ... how does one go about capturing that workload??
Thanks in advance
Raj
--------------------------------------------------------------------------------
Rajendra dot Jamadagni at nospamespn dot com
All Views expressed in this email are strictly personal.
QOTD: Any clod can have facts, having an opinion is an art !
-----Original Message-----
From: Cary Millsap [mailto:[EMAIL PROTECTED]]
Sent: Friday, July 25, 2003 1:24 AM
To: Multiple recipients of list ORACLE-L
Subject: RE: Computing resource consumption
Raj,
A pretty common (and actually pretty accurate) charge back unit is the LIO. You can get this information by using the standard AUDIT CONNECT feature, and using the LREAD value as your basis. If you wanted to get fancy, you might also charge by the parse call (which you're already collecting in your V$SESSTAT query). The reason I'd focus on these two metrics is because these are the two operations on an Oracle system that absolutely prevent the system from scaling.
You could count physical I/Os as well, but that would be redundant if you're already catching LIO call counts.
Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com
Upcoming events:
- Hotsos Clinic 101 in Denver, Sydney
- Hotsos Symposium 2004 March 7-10 Dallas
- Visit www.hotsos.com for schedule details...
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Jamadagni, Rajendra
Sent: Thursday, July 24, 2003 12:04 PM
To: Multiple recipients of list ORACLE-L
Subject: Computing resource consumption
Does anyone know any papers or techniques to compute resource consumption by users in a DB systems? This may or may not be for computing charge-back to the client, but my questions are
1. What do you compute?
2. are there any standard methods and or standard formula?
I am collecting v$sesstat when a session exits, but is data alone from session stats sufficient? How about the work done by background processes on user's behalf?
Do you do anything like this at your workplace? This is something that might be coming down the line, so I have been asked to start looking for related stuff.
Thanks in advance
Raj
--------------------------------------------------------------------------------
Rajendra dot Jamadagni at nospamespn dot com
All Views expressed in this email are strictly personal.
QOTD: Any clod can have facts, having an opinion is an art !
********************************************************************This e-mail message is confidential, intended only for the named recipient(s) above and may contain information that is privileged, attorney work product or exempt from disclosure under applicable law. If you have received this message in error, or are not the named recipient(s), please immediately notify corporate MIS at (860) 766-2000 and delete this e-mail message from your computer, Thank you.*********************************************************************2
