Blocked Thread IBM WAS

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Question by amol k. · Sep 30, 2014 at 07:50 PM ·

Blocked Thread IBM WAS

Hi ,

Application team has collected thread dump for blocked thread where for few blocked threads we are getting dynatrace agent code where thread is waiting, Please suggest anyone observed this kind of issues.

Regards,Dynatrace_stack.doc

Amol

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Answer 1 · 2014-10-01T23:57:34Z

Answer by amol k. · Oct 01, 2014 at 11:57 PM

unfortunately we have removed agents from Prod so we cant test this. I need to check on UAT if its have same behavior.

Regards,

Amol

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Answer 2 · 2014-10-01T20:58:26Z

Answer by amol k. · Oct 01, 2014 at 08:58 PM

Hi Harry,

Thanks for highlight but we have not places * at servlet we have enabled only single parameter.

Regards,

Amol

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Andreas G. ♦ · Oct 01, 2014 at 09:19 PM 0

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Just as a sanity check - could you try removing that single parameter and see whehter that makes a difference?

Answer 3 · 2014-10-01T19:01:40Z

Answer by Harald B. · Oct 01, 2014 at 07:01 PM

Amol,

Please consider that getting parameter (like using the * operator to get all parameter) can be very expensive. One quick sanity test would be to disable parameter capturing

regards

Harry

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Answer 4 · 2014-10-01T16:23:09Z

Answer by amol k. · Oct 01, 2014 at 04:23 PM

Hi Andi,

Thanks for update. We are planing to upgrade to DT 6 but it will take time as currently we are in implementation phase will raise support ticket and keep posting.

Regards,

Amol

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Answer 5 · 2014-10-01T04:39:11Z

Answer by Andreas G. · Oct 01, 2014 at 04:39 AM

Are you planning on upgrading to dynaTrace 6? It seems you are still on 5.6 - so - an upgrade would be interesting and see if that has a positive affect.

I am not aware of a known issue in the IBM JVM - but - in the past we on and off had customers with some issues with the IBM JVM. We keep improving our implementation for IBM JVM - thats why I am wondering if you could upgrade to benefit from the latest improvements.

You could also open a support ticket and referencing to this forum post. Maybe my colleagues from technical support know about this behavior

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Answer 6 · 2014-10-01T01:32:32Z

Answer by Jalpesh S. · Oct 01, 2014 at 01:32 AM

Hi Andi,

Thanks for prompt response. Please find attachment for details which you requested.

Servlet_IBMWAS.zip

Regards,

Amol Khawre

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Answer 7 · 2014-10-01T00:32:08Z

Answer by Andreas G. · Oct 01, 2014 at 12:32 AM

Hi Amol

Thats interesting. Can you attach a screenshot of your Servlet SEnsor Properties Dialog? The stack trace you attached shows that this is the dynaTrace code that captures Servlet Parameters that you want to capture. A quick look into your configuration would help to better understand what the problem might be

Also - can you provide the exact version and platform information of your IBM WAS?

Thanks

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Blocked Thread IBM WAS

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