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From Ray Holme <rho...@roadrunner.com>
Subject Re: tomcat 5 and the JVM
Date Mon, 02 Feb 2009 14:03:42 GMT
thanks - removed
On Mon, 2009-02-02 at 14:46 +0100, Felix Schumacher wrote:
> Hi Ray,
> 
> On Mon, February 2, 2009 1:59 pm, Ray Holme wrote:
> > I run tomcat 6 on Linux and have multiple applications in development
> > mode. From my testing I have discovered that a Java bean shared by all
> > applications and with ALL methods as static SEEMS to have  a separate
> > instance for each appliction - i.e.
> look at
> http://tomcat.apache.org/tomcat-6.0-doc/class-loader-howto.html
> 
> > cool, but it means that each application must do a
> >   System.gc()
> If you have to do a System.gc() by yourself, you (most) probably did
> something wrong with your Bean. And be careful with that call. First the
> jvm is free to ignore it. Second it can be a major performance hit. We
> once found an application to call System.gc() with every get|post call. We
> disabled the System.gc() functionality by starting the jvm with 
> -XX:+DisableExplicitGC.
> 
> Bye
>  Felix
> 
> 
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