Re: Réf. : Re: TOMCAT memory usage : how to manage and benchmark ?

[Henri Gomez <hg...@apache.org>]

Patrice.Boucher@groupe-asten.fr wrote:
> Grrrr...
> 
> Always the same problem!
> 
> I tried in the tomcat.conf script :
> 
> JAVACMD="$JAVA_HOME/bin/java -Xms128m -Xmx256m"
> 
> or in the dtomcat4 :
> 
> JAVA_OPTS=" -server -Xms128m -Xmx256m"
> 
> --> The memory used by my tomcat reach 300 MO or more with 0 user
> connected...
> 
> Why ?

It may be :

- your application init stage

- admin/manager (remove them if you don't need them)

> what is the goog hard config for 500 concurrent users on the same tomcat
> server ?

It depend on your application, but I'll recommand a least 3 fast Intel 
based linux boxes, with about 512Mo of RAM, and in front an Apache 
1.3/2.0 box + mod_jk.

But it depend really on what your application is doing...




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Re: Réf. : Re: TOMCAT memory usage : how to manage and benchmark ?

[Pier Fumagalli <pi...@betaversion.org>]

"Henri Gomez" <hg...@apache.org> wrote:
> Patrice.Boucher@groupe-asten.fr wrote:
>
>> what is the goog hard config for 500 concurrent users on the same tomcat
>> server ?
> 
> It depend on your application, but I'll recommand a least 3 fast Intel
> based linux boxes, with about 512Mo of RAM, and in front an Apache
> 1.3/2.0 box + mod_jk.

Or just one Sun dual 440 UltraSparc IIi, 1 Gb/ram, Solaris 8 and some tweaks
(all in one box). That's our config, and that's roughly our traffic (ok,
maybe 300/400 concurrent request).

Henri's right... Depends on what your webapp has to do, though...

    Pier


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