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From Christopher Schultz <ch...@christopherschultz.net>
Subject Re: Connections stacking between tomcat and nginx
Date Sat, 07 Mar 2015 19:57:48 GMT
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Thomas,

On 3/4/15 2:26 PM, Thomas Boniface wrote:
> We have a setup where tomcat is behind nginx and in some case the
> maximum number of connection is reached between these two.  These
> connections are in close wait state and a tomcat thread dump shows
> no blocking on its side.

What does your <Connector> configuration look like?

What does your Nginx configuration look like (I've never used Nginx
with Tomcat before).

How many web servers do you have? How many Tomcat servers?

> I tried to check the connections status using jmxproxy. I was able
> see the number of active connection but it can find out any details
> of what are connections doing or what their status are internally
> for tomcat. Are these kind of details available using JMX or is
> there any other path I could follow in order to have more details
> on the connection state at tomcat level ?

You can take thread dumps[1] to find out what those threads are doing.

- -chris

[1]
http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F
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