I don't have the answers to this, but one thing to watch is your PermGen memory for the JVM, we've had to increase this on our Tomcats to handle lots of web services that have their jars included in the .aar (as opposed to using common shared jars in WEB-INF/lib). You get to a point where your Tomcat or JVM just hangs permanently, often without error messages.

Dave MacLean wrote:
Hello,
We are using Axis2 to host a large number of web services contained in
.aar archives.  We have some code that will allow users to automatically
generate new services "on-the-fly" that leverages the hot-deployment
features in Axis2, and so we end up with potentially large numbers of
services deployed at a given time.

I was wondering if there have been any scalability tests done, or if
there is a guideline on approximately how much hardware is needed to
host X number of services, etc.  I have not been able to find anything
in the docs or mailing list archives.  Basically, I want to know when we
might start to run into performance problems, and how many services we
can realistically expect to host on a single server.

Is there any data available on this?  Anyone else running a similar
setup that can share their findings?

Thanks in advance,

Dave

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Anthony
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Black Coffee Software Ltd
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