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From Cunningham Emmett <>
Subject Re: JK2 and IIS 4.0 performance issue
Date Wed, 10 Dec 2003 17:18:25 GMT

I have been using Tomcat 4 with JK2 connecting to
IIS on Win2K and have had little or no performance
loss when compared to using iPlanet. There is a small
hit when compared to accessing Tomcat directly. But
that is a *small* hit.

One developer I know has also been using XP to support
this configuration and he has not mentioned any
slowness relative to Win2K.

I hope that this information helps guide you,

--- Thomas Nybro Bolding
<> wrote:
> Greetings list,
> I have just upgraded my Tomcat 4.1.27 using JK to
> Tomcat 5.0.16 using JK2. 
> In both cases I connect to IIS 4.0 running on Win
> NT.
> Performance is now extremely poor when the JSP pages
> are being served 
> through JK2 whereas everything works smoothly when
> requesting port 8080. I 
> therefore assume it is the JK2/IIS connection which
> causes the penalty.
> My questions are thus:
> -  is anybody connecting IIS 4.0 to Tomcat using JK2
> with no or little 
> perfomance penalty? And in that case which default
> parameters have been 
> changed?
> - would upgrading to Windows 2000 and IIS 5.0 solve
> this ussue?
> - I have read the isapi_redirector2 is for IIS 5.0
> on Windows 2000 whereas 
> isapi_redirector2.02 is for IIS5.1 on Windows XP?
> Can this be confirmed? 
> Which version is for IIS 4.0 then???
> Any help will be highly appreciated!
> Best regards Thomas
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