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Michal Singer wrote:
Hi.
I am not sure the stuck as any thing to do with the Request Processor
accumulation.
I work with nio connector. I use acceptCount=200 so maybe this is why i
see the 200 Request Processors.
This is the full configuratin i use for connector:
Connector
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Michal,
Michal Singer wrote:
I am not sure the stuck as any thing to do with the Request Processor
accumulation.
I work with nio connector. I use acceptCount=200 so maybe this is why i
see the 200 Request Processors.
acceptCount=200 just means
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Michal,
Michal Singer wrote:
1. request processors are equivalent to threads?
Yes. The only thing that can execute code is a thread. Given your
configuration, it appears that you will have 500 maximum threads.
I am a little unfamiliar with the NIO
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From: Christopher Schultz [mailto:[EMAIL PROTECTED]
Subject: Re: Tomcat request processing gets stuck
2. doesn't nio work with one thread? (I thougt that this
thread configuration is irrelevant since nio works with
one thread to receive requests.)
Nope. The NIO connector is just a non
From: Michal Singer [mailto:[EMAIL PROTECTED]
Subject: Re: Tomcat request processing gets stuck
I am not sure why, if as i know nio is supposed to improve
performance.
Not true; NIO improves *capacity*, but it will slightly degrade throughput due
to more thread switching.
I am checking my
From: Christopher Schultz [mailto:[EMAIL PROTECTED]
acceptCount=200 just means that the socket will accept 200
clients /in
addition/ to those currently being served by RequestProcessor threads.
The only way to see those waiting clients would be to query
the socket itself (maybe only
Deear Michal,
When i checked the tomcat using jconsole i see that the object
RequestProcessor
accumulates to many objects which i guess may show the cause of this
problem.
Uhm. Could you explain what you mean here? I don't understand what you
are trying to say.
You see too many request
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, Michal
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Michal Singer wrote:
Any ideas why the stuck, what can i do to check this? can there be a problem
with my tomcat configuration?
Almost certainly an application issue.
Take a series of thread dumps (2 or 3) 15 seconds apart and look for
threads that are consistently stuck between dumps.
Mark
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From: Michal Singer [mailto:[EMAIL PROTECTED]
Subject: Re: Tomcat request processing gets stuck
1. Please explain what do you mean by thread dumps?
You could use Google to find definitions and examples...
The JConsole Threads tab shows the stack trace of individual threads; a thread
dump
Michal Singer wrote:
Hi,
1. Please explain what do you mean by thread dumps?
Google is your friend, as is http://tomcat.markmail.org
2. why do you think this is an application problem?
Years of experience (and if Tomcat had an issue the users list would be
full of posts reporting problems and
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From: Michal Singer [mailto:[EMAIL PROTECTED]
Subject: Re: Tomcat request processing gets stuck
maybe the default configuration is not good for load??
No, it's your webapp. Get the thread dumps and tell us what you see in there.
- Chuck
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