Web Services with Sun App Server

We are load testing a simple web service running in SJSAS 8.0 Standard. With 1 or 2 users concurrent it seems OK, but once we move up to 5 concurrent users calling the WS, the domain in SJSAS crashes.

Does anyone have experience or information regarding the app server and load with web services? Are there some config options that we can tweak? Are there any numbers out there about how many simultaneous connections the server can handle?

A final note, things seem fine if we are just serving a simple web page from the server, its only when we try to call a WS that we run into these performance issues.

Thanks.

[641 byte] By [Dawson_Mossman] at [2007-11-26 8:42:56]

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# 1

Dawson, I'd strongly recommend you to update the version of the Application Server you are using. Version 8.1 has many improvements and bug fixes over 8.0. It is freely downloadable and you won't probably need to change you application.

JoaoGuilhermeDelValle at 2007-7-6 22:23:09 >

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# 2

Hi Dawson,

I am assuming, you are running JAX-RPC 1.1 on SJSAS 8.0 SE. Do you see any error messages in server.log? What is the message size sent to the server? On what platform you are running this like JDK version and OS (solaris, linux or windows)? If you can provide these details that would be great.

Yes, You can tune the server through the admin console or editing the domain.xml. Try starting the server with jvm option -server and if you are sending huge message size try increasing jvm option -Xmx in domain.xml or admin console and restart the server.

Is it possible to send us your simple web service, wsdl? We will see if we can reproduce this crash.

bharathm at 2007-7-6 22:23:09 >

# 3

Can you post output of asadmin version -v command. I want to see exactly the version of appsever you are using.Thanks,/Oleg

olegkst at 2007-7-6 22:23:09 >

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