solution if a web application is running very slow all of a sudden

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What will we do if we find that our web application is running very slow all of a sudden (This answer should include both .net and SQL server)

Posted 8-Feb-11 23:48pm

siva455

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Richard MacCutchan · Answer 1 · 2011-02-08T23:53:00

Solution 1

The first thing to do is investigate what your application is doing and whether it is doing anything wrong, or doing something right but in the wrong way. It is impossible for anyone to guess what might be the problem without a good understanding of your code.

Posted 8-Feb-11 23:53pm

Richard MacCutchan

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fjdiewornncalwe 9-Feb-11 11:16am

The first thing he should do is read his textbooks before writing an exam. :)
+5.

Richard MacCutchan 9-Feb-11 12:21pm

:laugh:

Philip.F · Answer 2 · 2011-02-08T23:57:00

Solution 2

Have a look at your Firewall / IIS logs and see if you are under heavy load (maybe a ddos-attack?)
Check for locks and freezing jobs on the database with the activity monitor
If you have access to, check the CPU/RAM usage on your server, maybe an application is consuming too much resources...
etc..

Good luck finding the issue!
Phil

Posted 8-Feb-11 23:57pm

Philip.F

Updated 9-Feb-11 4:53am

v2

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siva455 9-Feb-11 6:10am

thanks for your answer,ddos attack is this any virus u mean to say...?

siva455 9-Feb-11 6:20am

U mean to say in IIS logs we can check the number of users....?
correct me if im wrong...and logs are under system32/.??

Philip.F 9-Feb-11 7:11am

DDOS: http://de.wikipedia.org/wiki/Denial_of_Service
But that's just a possibility..

For checking the current request amount: go to Control Panel/Administrative Tools/Reliability and Performance Monitor, add counter "Request current" and "Request queued" under ASP.NET vX (Your asp version)