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Profiling an app shows lots of blocked worker threads

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Profiling an app shows lots of blocked worker threads

Subject: Profiling an app shows lots of blocked worker threads
From: Simon McLean <email@hidden>
Date: Wed, 15 Aug 2007 18:05:06 +0100

Hi -

I'm a beginner when it comes to profiling an app, so please bear with the idiot questions :-)

The reason I'm digging into profiling is because we have a deadlock problem.

I've started up the app using JProfiler and I can see various threads running. The bit I'm concerned about is the sea of red highlighting blocked worker threads. When I start the app about 2 thirds of the 16 running worker threads are already blocked, and within a couple of minutes 15 of them are consistently blocked. Despite this, the app seems to behave ok.

Should I be worried about this ?

Thanks, Simon
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