Thursday, February 22, 2007

Symptoms for Application & Web Server Bottlenecks

Symptoms for Application server bottleneck
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1. Increased 'Server Time' breakup
2. One or more page components of transaction takes more time where in the DB query is having less execution time.
3. The Static files are having less response time whereas the dynamic contents (servlets,jsp,etc) takes more time.
4. Network delay is negligible.
5. Home Page gets displayed in few seconds even during the stress period(as it is fetched from the web server).
6. Hits / sec & Throughput remains less.
7. If the CPU/ Memory/Disk of the App server has any bottleneck symptoms.
8. If the HTTP / HTTPS connections established doesn’t increase proportionally with the load.
9. If the new connections established is very higher & the reused connections are very less.


Symptoms for Web server bottleneck
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1. Increased 'Server Time' breakup
2. One or more page components of transaction takes more time where in the DB query is having less execution time.
3. The static files are having high response time than the dynamic contents (servlets,jsp,etc).
4. Network delay is negligible.
5. Home Page takes more time for display.
6. Hits /sec in the web server is very less.
7. If the CPU/ Memory/Disk of the web server has any bottleneck symptoms.

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