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From Daniel Mikusa <dmik...@gopivotal.com>
Subject Re: consultation on Manager Tomcat 7.0.29
Date Tue, 25 Mar 2014 18:20:47 GMT
On Mar 25, 2014, at 1:26 PM, Jose Irrazabal <jbig1782@gmail.com> wrote:

> Hello Dan, thank you for answer
> 
> Apparently  there thread  are pending in the Tomcat.  In the Server Status
> of Manager Tomcat I observe threads with stage in S and time of 11858908
> ms. As I can release these processes or is there some way to identify the
> problem?

First, please don’t top post.  Either reply inline like this, or at the bottom.  That is
the convention that we follow on this list.

Second, did you take some thread dumps or just look at the output in manager?  The thread
dumps are necessary and will show more detail about what is happening.  If you need help reading
/ understanding the thread dumps that you capture, feel free to post them here.

Dan

> 
> I will appreciate any help. Thanking You!
> 
> Jose Irrazabal
> 
> 
> 2014-03-24 15:01 GMT-03:00 Daniel Mikusa <dmikusa@gopivotal.com>:
> 
>> On Mar 24, 2014, at 1:29 PM, Jose Irrazabal <jbig1782@gmail.com> wrote:
>> 
>>> Hi All,
>>> 
>>> I use Apache Tomcat/7.0.29 to deploy my applications and I would like to
>>> know about the information that is displayed in the Server Status in the
>>> Manager of Tomcat in the option "http-bio-8080" where I see the Threads
>>> this way: Max threads: 200 Current thread count: 190 Current thread busy:
>>> 189. The Tomcat in a moment is stopped, and visualizing The Threads are
>>> processes with state S and I would like to know what it means and how it
>>> could improve performance.
>> 
>> You can get more information by taking thread dumps of the process.
>> 
>> 
>> http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F
>> 
>> See this section for some pointers on reading thread dumps.
>> 
>> 
>> http://wiki.apache.org/tomcat/HowTo#How_do_I_read_a_Java_thread_dump_.3F
>> 
>> The thread dumps should give you a better idea as to what each thread is
>> doing.  With more information, you can better understand what is going on
>> and more accurately determine where to go from there.
>> 
>> As far as performance, it's great that you want to improve it, but
>> improving performance can mean a lot of things.  What is it specifically
>> that you want to improve?  Are you trying to reduce memory consumption,
>> reduce CPU consumption, reduce GC overhead, reduce request handling time
>> for X URL, etc?
>> 
>> Dan
>> 
>> PS 7.0.29 is pretty old.  You should strongly consider upgrading to get
>> all the latest bug and security fixes.
>> 
>>> 
>>> Any information will be of great help.
>>> 
>>> 
>>> I will appreciate any help. Thanking You!
>>> 
>>> 
>>> Jose Irrazabal
>> 
>> 
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