I'll add my favourite - and currently overlooked - point. Network. Not the entire network as a whole, but specific server things like NIC performance, protocol stack performance, MTU (see recent excellent post by Matt on jumbo frames), and all that jazz.
my 2� Ciao Fuzzy ;-) > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of > DENNIS WILLIAMS > Sent: Monday, July 14, 2003 17:49 > To: Multiple recipients of list ORACLE-L > Subject: RE: Estimating User Load on the system > > > Raj > I'll second Jared's idea. Don Burleson in his book Oracle9i > High-Performance Tuning with STATSPACK makes a strong point > that looking at > system load must start with the underlying system. Any look at Oracle > performance must begin with an understanding of what the > system load was at > that time. As Jared points out, the three components are CPU, I/O, and > memory. For example, you may find that one of these target > users is the high > CPU consumer from an Oracle perspective at a point in time. > Now, if you > discovered the system CPUs weren't being taxed at that time > your conclusions > might be different than if you discovered the system CPUs > were pegged at > 100% at that time. > > Dennis Williams > DBA, 80%OCP, 100% DBA > Lifetouch, Inc. > [EMAIL PROTECTED] > > -----Original Message----- > Sent: Monday, July 14, 2003 10:19 AM > To: Multiple recipients of list ORACLE-L > > > > Load on a system is in general comprised of three components: > CPU, memory and IO. > > If you have something in place to track those on a per user > basis, then you're doing well. You might consider also tracking > other users, so that you have a basis for comparison. > > Jared > > On Monday 14 July 2003 07:04, Jamadagni, Rajendra wrote: > > I have been asked to compute the load put on the system by > a 'select group > > of userids'. I know these users and have put something in > place where I > > sample periodically following > > > > 1. session stats > > 2. session io > > 3. system stats > > 4. number of sessions > > 5. v$transaction > > > > Am I missing something? Has anyone done this before? If > so, what have you > > computed ? > > > > TIA > > 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 ! > > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: Jared Still > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- > Please see the official ORACLE-L FAQ: http://www.orafaq.net > -- > Author: DENNIS WILLIAMS > INET: [EMAIL PROTECTED] > > Fat City Network Services -- 858-538-5051 http://www.fatcity.com > San Diego, California -- Mailing list and web hosting services > --------------------------------------------------------------------- > To REMOVE yourself from this mailing list, send an E-Mail message > to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in > the message BODY, include a line containing: UNSUB ORACLE-L > (or the name of mailing list you want to be removed from). You may > also send the HELP command for other information (like subscribing). > -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Grant Allen INET: [EMAIL PROTECTED] Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).
