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Message-ID: <4F2054F3.4050601@christopherschultz.net>
Date: Wed, 25 Jan 2012 14:16:03 -0500
From: Christopher Schultz <chris@christopherschultz.net>
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To: Tomcat Users List <users@tomcat.apache.org>
Subject: Re: Tomcat memory requirements
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Celso,

On 1/25/12 6:45 AM, Celso Magalhães Dantas Neto wrote:
> Does anyone knows where I can find any information about Tomcat
> memory requirements?
> 
> Here's the problem: I got a client who's running a Tomcat process
> in his machine and it is taking around 150MB of RAM and he is
> complaining about it. It's a webapp and for me it's normal to a
> webapp to take that amount of memory, but I want to argue with him
> with some data.
> 
> So I'm looking for some Tomcat memory requirements info, even if
> it's a memory requirements to run Tomcat only, with no deployed
> webapp. It will help me to argue with him.

I ran a webapp for years in  64MiBheap (of course, there is also
non-heap memory consumed) with plenty of room to shrink and grow
before our user needs exceeded that fairly modest heap.

Tomcat itself is unlikely to be the source of your memory usage. The
JVM plus the webapp are going to be much heavier unless the webapp is
trivial.

- -chris
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