21.3. Configuring EJB Thread Pools

21.3.1. Enterprise Bean Thread Pools
复制链接

JBoss EAP 6 maintains number of instances of Java thread objects in memory for use by enterprise bean services, including remote invocation, the timer service, and asynchronous invocation.

This technique is called thread pooling. It provides improved performance by eliminating the overhead of thread creation and gives the system administrator a mechanism for controlling resource usage.

Multiple thread pools can be created with different parameters and each service can be allocated a different thread pool.

Report a bug

21.3.2. Create a Thread Pool
复制链接

EJB Thread pools can be created using the Management Console or the CLI.

Procedure 21.10. Create an EJB Thread Pool using the Management Console

Login to the Management Console. Section 3.3.2, “Log in to the Management Console”
Click on the Configuration tab at the top of the screen.
Expand the Container menu and select EJB 3.
Select the Thread Pools tab and click Add.
Specify the Name and Max Threads values.
Click Save to finish.

Procedure 21.11. Create a Thread Pool using the CLI

Launch the CLI tool and connect to your server. Refer to Section 3.4.4, “Connect to a Managed Server Instance Using the Management CLI”.
Use the add operation with the following syntax.
```
/subsystem=ejb3/thread-pool=THREAD_POOL_NAME:add(max-threads=MAX_SIZE)
```
```
/subsystem=ejb3/thread-pool=THREAD_POOL_NAME:add(max-threads=MAX_SIZE)
```
Copy to Clipboard Toggle word wrap
- Replace THREAD_POOL_NAME with the name of the thread pool.
- Replace MAX_SIZE with the maximum size of the thread pool.
Use the read-resource operation to confirm the creation of the bean pool.
```
/subsystem=ejb3/thread-pool=THREAD_POOL_NAME:read-resource
```
```
/subsystem=ejb3/thread-pool=THREAD_POOL_NAME:read-resource
```
Copy to Clipboard Toggle word wrap

Example 21.7. Create a Thread Pool using the CLI

[standalone@localhost:9999 /] /subsystem=ejb3/thread-pool=my-test-pool:add(max-threads=20)
{"outcome" => "success"}

[standalone@localhost:9999 /] /subsystem=ejb3/thread-pool=my-test-pool:add(max-threads=20)
{"outcome" => "success"}

Copy to Clipboard

Toggle word wrap

Example 21.8. XML Configuration Sample

<subsystem xmlns="urn:jboss:domain:ejb3:1.5">
   ...
   <thread-pools>
      ...
      <thread-pool name="my-test-pool" max-threads="20"/>
   </thread-pools>
   ...
</subsystem>

<subsystem xmlns="urn:jboss:domain:ejb3:1.5">
   ...
   <thread-pools>
      ...
      <thread-pool name="my-test-pool" max-threads="20"/>
   </thread-pools>
   ...
</subsystem>

Copy to Clipboard

Toggle word wrap

Report a bug

21.3.3. Remove a Thread Pool
复制链接

Unused EJB thread pools can be removed using the Management Console.

Prerequisites

The thread pool that you want to remove cannot be in use. Refer to the following tasks to ensure that the thread pool is not in use:

Procedure 21.12. Remove an EJB thread pool using the Management Console

Login to the Management Console. Section 3.3.2, “Log in to the Management Console”.
Click on the Configuration tab at the top of the screen. Expand the Container menu and select EJB 3. Select the Thread Pools tab.
Select the thread pool to you want to remove.
Click Remove. The Remove Item dialog appears.
Click Confirm.

Procedure 21.13. Remove a thread pool using the CLI

Launch the CLI tool and connect to your server. Refer to Section 3.4.4, “Connect to a Managed Server Instance Using the Management CLI”.
Use the remove operation with the following syntax.
```
/subsystem=ejb3/thread-pool=THREADPOOLNAME:remove
```
```
/subsystem=ejb3/thread-pool=THREADPOOLNAME:remove
```
Copy to Clipboard Toggle word wrap
- Replace THREADPOOLNAME with the name of the thread pool.

Example 21.9. Removing a Thread Pool using the CLI

[standalone@localhost:9999 /] /subsystem=ejb3/thread-pool=ACCTS_THREADS:remove
{"outcome" => "success"}

[standalone@localhost:9999 /] /subsystem=ejb3/thread-pool=ACCTS_THREADS:remove
{"outcome" => "success"}

Copy to Clipboard

Toggle word wrap

Report a bug

21.3.4. Edit a Thread Pool
复制链接

JBoss Administrators can edit Thread Pools using the Management Console and the CLI.

Procedure 21.14. Edit a Thread Pool using the Management Console

Login to the Management Console. Section 3.3.2, “Log in to the Management Console”.
Click on the Configuration tab at the top of the screen. Expand the Container menu and select EJB 3. Select the Thread Pools tab.
Select the thread pool you want to edit.
Click Edit.
Edit the details you want to change. Only the Thread Factory, Max Threads, Keepalive Timeout, and Keepalive Timeout Unit values can be edited.
Click Save to finish.

Procedure 21.15. Edit a thread pool using the CLI

Launch the CLI tool and connect to your server. Refer to Section 3.4.4, “Connect to a Managed Server Instance Using the Management CLI”.
Use the write_attribute operation with the following syntax for each attribute of the thread pool to be changed.
```
/subsystem=ejb3/thread-pool=THREADPOOLNAME:write-attribute(name="ATTRIBUTE", value="VALUE")
```
```
/subsystem=ejb3/thread-pool=THREADPOOLNAME:write-attribute(name="ATTRIBUTE", value="VALUE")
```
Copy to Clipboard Toggle word wrap
- Replace THREADPOOLNAME with the name of the thread pool.
- Replace ATTRIBUTE with the name of the attribute to be edited. The attributes that can be edited in this way are keepalive-time, max-threads, and thread-factory.
- Replace VALUE with the required value of the attribute.
Use the read-resource operation to confirm the changes to the thread pool.
```
/subsystem=ejb3/thread-pool=THREADPOOLNAME:read-resource
```
```
/subsystem=ejb3/thread-pool=THREADPOOLNAME:read-resource
```
Copy to Clipboard Toggle word wrap

Important

When changing the value of the keepalive-time attribute with the CLI the required value is an object representation. It has the following syntax.

/subsystem=ejb3/thread-pool=THREADPOOLNAME:write-attribute(name="keepalive-time", value={"time" => "VALUE","unit" => "UNIT"}

/subsystem=ejb3/thread-pool=THREADPOOLNAME:write-attribute(name="keepalive-time", value={"time" => "VALUE","unit" => "UNIT"}

Copy to Clipboard

Toggle word wrap

Example 21.10. Set the Maxsize Value of a Thread Pool using the CLI

[standalone@localhost:9999 /] /subsystem=ejb3/thread-pool=HSThreads:write-attribute(name="max-threads", value="50")
{"outcome" => "success"}

[standalone@localhost:9999 /] /subsystem=ejb3/thread-pool=HSThreads:write-attribute(name="max-threads", value="50")
{"outcome" => "success"}

Copy to Clipboard

Toggle word wrap

Example 21.11. Set the keepalive-time Time Value of a Thread Pool using the CLI

[standalone@localhost:9999 /] /subsystem=ejb3/thread-pool=HSThreads:write-attribute(name="keepalive-time", value={"time"=>"150"})
{"outcome" => "success"}

[standalone@localhost:9999 /] /subsystem=ejb3/thread-pool=HSThreads:write-attribute(name="keepalive-time", value={"time"=>"150"})
{"outcome" => "success"}

Copy to Clipboard

Toggle word wrap

Report a bug

此内容没有您所选择的语言版本。

21.3.1. Enterprise Bean Thread Pools
复制链接

21.3.2. Create a Thread Pool
复制链接

21.3.3. Remove a Thread Pool
复制链接

21.3.4. Edit a Thread Pool
复制链接

学习

尝试、购买和销售

社区

关于红帽文档

让开源更具包容性

關於紅帽

Theme

Red Hat legal and privacy links

Red Hat legal and privacy links

此内容没有您所选择的语言版本。

21.3. Configuring EJB Thread Pools

21.3.1. Enterprise Bean Thread Pools复制链接链接已复制到粘贴板!

21.3.2. Create a Thread Pool复制链接链接已复制到粘贴板!

21.3.3. Remove a Thread Pool复制链接链接已复制到粘贴板!

21.3.4. Edit a Thread Pool复制链接链接已复制到粘贴板!

学习

尝试、购买和销售

社区

关于红帽文档

让开源更具包容性

關於紅帽

Theme

Red Hat legal and privacy links

Red Hat legal and privacy links

21.3.1. Enterprise Bean Thread Pools
复制链接

21.3.2. Create a Thread Pool
复制链接

21.3.3. Remove a Thread Pool
复制链接

21.3.4. Edit a Thread Pool
复制链接