Miguel Gonzalez wrote:
Just wondering. With a 64 bits OS, how much RAM can you handle in a JVMand therefore with each instance of Tomcat?
For a 12 Gb of RAM machine, it would be wise if you want to have this kind of
setup (Apache and two Tomcat instances in the same machine) if you need more
there wasn't a limit of 32 bits OS for running JVM for more than 1.5 Gb?
Regards,
Miguel
De: André Warnier a...@ice-sa.com
Para: Tomcat Users List users@tomcat.apache.org
Enviado: Miércoles 16 de Mayo de 2012 11:50
Asunto: Re: two instances of Tomcat in same
Miguel Gonzalez wrote:
there wasn't a limit of 32 bits OS for running JVM for more than 1.5 Gb?
Not exactly. I'm not sure that my knowledge is totally accurate here, but here is my take
on it :
- a 32 bit OS generally means that the total address space available to *a process*
running at
From: Miguel Gonzalez [mailto:miguel_3_gonza...@yahoo.es]
Subject: Re: two instances of Tomcat in same machine
there wasn't a limit of 32 bits OS for running JVM for more than 1.5 Gb?
Yes, there is a limit on heap size for 32-bit JVMs and it's usually around 1.5
GB depending on the OS
On Windows 32-bit JVMs are often limited to less than 1.3GB of heap due
to fragmentation of the 32-bit address space. Sometimes one cannot even
get 1GB of heap!
For any hefty server process on Windows you really want a 64-bit JVM for
this reason.
On other OS's one can often allocate much
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André,
On 5/16/12 5:50 AM, André Warnier wrote:
Nobody can answer that question in the absolute. It all depends on
how much memory your Tomcat instances really need
(Really, your webapps, not Tomcat).
to run the applications you put it them, for
