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Home -> Community -> Mailing Lists -> Oracle-L -> RE: Wait Event Calculation
As I mentioned a few weeks ago, IMHO, singling out events to ignore in a
system-wide or even session-wide data collection is the wrong thing to
do. But you must ignore some events if you first make what I consider to
be errors in how you collect your data. If you collect data for only the
problem program during only the problem duration, then you should ignore
*none* of the events that you see. If you collect the data this way,
then *everything* you see will be a component of end-user response time.
Any other data collection method is misleading (and time-wasting) in many cases; one example of such a case is the rather longish example I described.
Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com
Upcoming events:
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Dallas
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-----Original Message-----
Williams
Sent: Friday, June 14, 2002 11:38 AM
To: Multiple recipients of list ORACLE-L
I am trying to break the response time of my system into the wait and
service times. I am able to determine the service time by the "CPU used
by
this session" line in the statspack report. The wait time I am having
trouble with. I am working from the 'Yet Another Performance Profiling
Method' document. The document lists a number of events that should not
be
included in the calculation because they are caused by background
process
waits. I am tuning an 8.1.6 databases and want to be sure I am only
counting
the appropriate events in this calculation. How can I get the list of
events
to include for my version of the database (the doc is quite old)?
Thanks
Erik
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Author: Erik Williams
INET: ewilliams_at_brownco.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists --------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (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).
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Please see the official ORACLE-L FAQ: http://www.orafaq.com
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Author: Cary Millsap
INET: cary.millsap_at_hotsos.com
Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists --------------------------------------------------------------------To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (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). Received on Fri Jun 14 2002 - 17:23:20 CDT
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