users@glassfish.java.net

RE: Re: Question about EJB concurrent behaviour

From: Drinkwater, GJ \(Glen\) <"Drinkwater,>
Date: Fri, 19 Oct 2007 10:41:50 +0100

Great, thanks.

Is there any reason why the default is so low?

Glen

-----Original Message-----
From: Dies Koper [mailto:dies_at_jp.fujitsu.com]
Sent: 19 October 2007 09:46
To: users_at_glassfish.dev.java.net
Subject: Re: Question about EJB concurrent behaviour

Configurations> server-config> HTTP Service > RequestProcessing

Thread Count
    Maximum number of request processing threads

Drinkwater, GJ (Glen) wrote:
> Hi
>
> Yes, I am using a java program using threads to create the concurrent
> requests.
>
> Ok I have done some more testing
>
> This is the method I am calling, I am using a synchronized bean that
> holds the number of concurrent accesses to this method, which prints
> out concurrent accesses and waits 10 seconds.
>
> private static SynchronizedBean concurrent = new
> SynchronizedBean();
>
> @WebMethod
> public void tenSeconds() {
> try {
> concurrent.add();
>
> System.out.println("CONCURRENT
> "+concurrent.getCONCURRENT());
>
> Thread.sleep(10000);
>
> } catch (InterruptedException ex) {
> System.out.println(ex);
> } finally {
> concurrent.minus();
> }
> }
>
>
> When I run some client java program to create say, 30 requests, I get
> these results.
>
> Via EJB Remote Calls: 11s (# concurrent 30) Via Web Service Calls: 60
> s (# concurrent 5)
>
> 40 requests
>
> Via EJB Remote Calls: 15s (# concurrent 40) Via Web Service Calls: 80
> s (# concurrent 5)
>
> Basically, the ejb calls can run the method concurrently and works as
> you would expect, creating the correct amount of beans in the pool.
> But the Web Service call only ever hits 5 concurrent (I know I said 10

> in my last email, but I was using my laptop for my last tests and
> that's dual core, if that makes any difference). So basically the web

> service call handles the requests sequentially in 5s.
>
> Why is this, can I configure glassfish to improve this performance?
>
> Glen

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