473,624 Members | 2,030 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

CPU Time (User / System) & Actual Elapsed Time for SQL

Hi,
ENV: DB2 ESE 8.2.3 DPF (11 nodes) on AIX 5.x
====

SCENARIO / SETUP
======== ======
(1) I needed to find out CPU Time (User / System) of SQL queries for
benchmark testing.
(2) I setup an EVENT MONITOR WHERE AUTH_ID = 'ANURAG'
(write to table).
(3) I set event monitor state to 1 and from another session executed 1
SQL query at a time (having connected to database with user
'ANURAG'). All this while, I am directly logged on to the server.
(4) After I received the complete results (41 million rows), I flushed
event monitor buffer and set its state to 0.
(5) Here are some actual results that baffle me:
(a) System CPU Time = 1.15 seconds
(b) User CPU Time = 21.83 seconds
(c) Elapsed Time = 84627 seconds
(calculated from 'start_time' and 'stop_time')

QUESTION / HELP SOUGHT
=============== =======
(1) The query actually returned the results in some 9 hours; how can
this figure be related to the event monitor output?
(2) Is there any way where I can find out the actual time of resultset
return from DB2 facilities?

I am unable to relate the CPU Time, Start/Stop Time with the 9 hours
elapsed. Results for other SQLs were similarly mindboggling.

Pl help me understand the output
(we will leave performance improvements for later :-)

Regards,
Anurag

Mar 2 '06 #1
0 1808

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

15
2016
by: kpp9c | last post by:
I am kind of in a bit of a jam (okay a big jam) and i was hoping that someone here could give me a quick hand. I had a few pages of time calculations to do. So, i just started in on them typing them in my time calculator and writing them in by hand. Now i realize, that i really need a script to do this because: 1. It turns out there are hundreds of pages of this stuff. 2. I have to do something similar in again soon. 3. By doing it by...
13
3279
by: Peter Hansen | last post by:
I would like to determine the "actual" elapsed time of an operation which could take place during a time change, in a platform-independent manner (at least across Linux/Windows machines). Using time.time() doesn't appear to be suitable, since time might jump forwards or backwards at the user's whim, if the system clock is reset, or when a daylight savings time change occurs. Using time.clock() doesn't appear to be suitable on Linux,...
0
1113
by: Microsoft | last post by:
I'm creating a service and am using a timer in it. When the service starts I enable the timer, and then in the timer elasped event, I'm disabling it (this.srvcTimer.Enabled = false) so the timer event doesn't fire while I'm already in it. At the end of the timer elapsed event I re-enable it. However, while running in the debugger, the event never fires. If I comment out the line disabling the timer in the elapsed event, the event fires. ...
9
7264
by: HL | last post by:
I am using VS 2005 Beta - C# Problem: The Timer fires a few milliseconds before the actual Due-Time Let's say a timer is created in the following manner: System.Threading.Timer m_timer = null; Let's declare a constant Int32 m_TimePeriod = 10000;
8
1823
by: Philipp Buehler | last post by:
Hello, postgresql 7.3.4 on Debian or the redhat packaged 7.3.4-8 on RHEL AS3 - same issue, so I somewhat cut out RH is playing things on me. Tested on two different PCs, too (say, one debian, one RHEL). While running UPDATE banner SET counterhalf=counterhalf+1 WHERE BannerID=50 several thousand times, the return times degrade (somewhat linear). The relation banner has currently *seven* rows and thus it doesnt matter
0
1330
by: brunft | last post by:
I was testing this with .NET Framework 2.0. Exceptions in the Elapsed event handler of a System.Timers.Timer are ignored, they are not handled by the runtime and not reported (when running outside of VS.NET) either. Ther Timer continues as if nothing happened. Is this the desired behaviour, because this would have very negative impact on analysis of unexpected errors? Am i missing any design directives concerining the exception handling...
5
14436
by: techspirit | last post by:
Hi, I am seeking help for calculating the elapsed time on an activity. When the user clicks "pause" button on a form, the timer should also pause. When the user clicks "continue", the timer should continue from where the user paused. For example, if the user paused after 10 seconds of progress in the activity, it should start from the 11th second when the user clicks "continue". Am using .Net version 1.1, so if stopwatch performs a...
33
7406
by: ram.ragu | last post by:
hi i have problem to calculate idle time of cpu and if idle time is more then i have to shut down the system. can anyone tell me the idea to so that please
12
16316
by: Spitfire | last post by:
I've a requirement to find the elapsed time between two function calls. I need to find the time elapsed accurate to 1 millisecond. The problem I'm facing right now is that, I'm using the 'time()' function call for the purpose and regardless of how many time I invoke the function within my program, I get the same output!!! For better clarity consider the code snippet below. ... start_time = time(NULL);
0
8679
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
8621
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
8335
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
7159
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
1
6110
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
0
4174
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
1
2606
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
1
1785
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
2
1482
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.