[jboss-jira] [JBoss JIRA] (AS7-2034) Asynchronous EJB thread pool maximum size is set to "Runtime.getRuntime().availableProcessors()"

[Stian Thorgersen (Updated) (JIRA)]

     [ https://issues.jboss.org/browse/AS7-2034?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Stian Thorgersen updated AS7-2034:
----------------------------------

    Steps to Reproduce: Deploy the attach JAR, or create one yourself from the attached source. When deployed the AsyncBean#execute method will be executed "2 x Runtime.getRuntime().availableProcessors()" times. Observe that the number of concurrent threads executing the method are never higher than "Runtime.getRuntime().availableProcessors()"  (was: Deploy the following beans:

{code}
package com.example;

import java.util.concurrent.atomic.AtomicInteger;

import javax.ejb.Asynchronous;
import javax.ejb.Stateless;

@Stateless
public class AsyncBean
{
    private static AtomicInteger threads = new AtomicInteger();

    @Asynchronous
    public void execute()
    {
        System.out.println("Starting " + Thread.currentThread().getName() + ", threads: " + threads.incrementAndGet());
        try
        {
            Thread.sleep(10000);
        }
        catch (InterruptedException e)
        {
        }
        System.out.println("Completed " + Thread.currentThread().getName() + ", threads: " + threads.decrementAndGet());
    }
}
{code}

and

{code}
package com.example;

import javax.annotation.PostConstruct;
import javax.ejb.EJB;
import javax.ejb.Singleton;
import javax.ejb.Startup;

@Singleton
@Startup
public class InvokerBean
{
    @EJB
    private AsyncBean async;

    @PostConstruct
    public void invoke()
    {
        System.out.println("Starting");
        int n = Runtime.getRuntime().availableProcessors() * 2;
        for (int i = 0; i < n; i++)
        {
            async.execute();
        }
        System.out.println("Completed " + n);
    }
}
{code}

)
       Forum Reference: http://community.jboss.org/message/630399  (was: http://community.jboss.org/message/630399)

    
> Asynchronous EJB thread pool maximum size is set to "Runtime.getRuntime().availableProcessors()"
> ------------------------------------------------------------------------------------------------
>
>                 Key: AS7-2034
>                 URL: https://issues.jboss.org/browse/AS7-2034
>             Project: Application Server 7
>          Issue Type: Bug
>    Affects Versions: 7.0.2.Final
>            Reporter: Stian Thorgersen
>         Attachments: agility-async_test.jar, AsyncBean.java, InvokerBean.java
>
>
> The thread pool service used to execute @Asynchronous EJB methods have been set to "Runtime.getRuntime().availableProcessors()". This is clearly not a sensible default as on a single core CPU (or VM) only a single @Asynchronous method is executed concurrently. I would imagine a sensible default would be at least 10.
> It would also be very useful if it was possible set this value in the configuration files.

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