How to detect intermittent time out problem in web applications?

Have a n-tire web application and search often times out after 30 secs. How to detect the root cause of the problem?

Asked by: Caroline758 | Posted: 28-01-2022

Answer 1

Log at separation of concerns, in this case at the boundaries of each layer. when you say search, I'd assume that this is a web app where the user is searching for some text.

Is the DB search involved ? Is there a possibility that your garbage collector is kicking in and the search timed out ? Try to log your garbage collection pauses using java command line switches. Later, you can analyse when your JVM was doing GCs. OR you can use a tool like JConsole or JvisualVM.

BR,
~A

Answered by: Haris903 | Posted: 01-03-2022

Answer 2

You can add trace code to log its activities and then look at each operation to see what part times out and why.

Answered by: Melissa612 | Posted: 01-03-2022

Answer 3

Use the tool Wireshark.

Install this tool on each tier and watch the http traffic and packets. This worked for me when debugging a time out issue which actually turned out to be an issue with empty SOAP envelopes.

Doing this will at least tell you which tier the issue is with.

Answered by: Daisy940 | Posted: 01-03-2022

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