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From Randhir Singh <>
Subject Re: How to monitor performance of tomcat
Date Thu, 22 May 2014 03:53:30 GMT
Thanks Ognjen for your reply. My reply was intended to 2 different people
hence it repeated but anyway I would try to take care on this.

So now it is clear from your answer that is called from in a default installation.


On Thu, May 22, 2014 at 3:59 AM, Ognjen Blagojevic <> wrote:

> Randhir,
> On 21.5.2014 14:31, Randhir Singh wrote:
>> I had changed in our development environment like a week back
>> and want to implement it in the production environment but I got this
>> doubt. I feel is invoked by but am not sure. I have
>> already taken downtime for production tomorrow but I got this doubt
>> whether
>> changing the
> 1. Don't post the same message twice. It makes volunteers on the list
> waste their time.
> 2. Don't top post. Bottom posting is the standard on this list.
> 3. Don't "request"/ People are volunteering here.
> 4. In default Tomcat instalation, is called from
> 5. Regardless of do you call or, environment
> variables have the same meaning: JAVA_OPTS is used on Tomcat startup and
> Tomcat shutdown, while CATALINA_OPTS is only used on Tomcat startup. If you
> place -Xms2048m in JAVA_OPTS it will reserve 2 GB on Tomcat startup, and
> another 2 GB when you invoke Tomcat shutdown. That is waste of memory. Use
> CATALINA_OPTS instead.
> 6. It is not recommended to modify or ever. All
> environment variables should be set in the file bin/
> 7. (5.) and (6.) were already pointed out by Chris. Please read answers on
> the list carefully to show that you respect resources volunteers are
> allocating for you for free.
> 8. You may invoke "ps -fHA | grep Bootstrap" after you start Tomcat, to
> see if your CATALINA_OPTS reached JVM call.
> -Ognjen
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