The Executor (thread pool)

Introduction

The Executor represents a thread pool that can be shared between components in JBoss Web. Historically there has been a thread pool per connector created but this allows you to share a thread pool, between (primarly) connector but also other components when those get configured to support executors

The executor is defined in the subsystem=threads See AS7 Admin Guide for more on the threads system.

Example

To demonstrate how a the logic works a thread-pool was added to the subsystem=threads and used in the subsystem=web/connector=http:

subsystem=threads

A thread-pool named "http" has been added it uses a thread-factory that creates threads named "HTTP-number"

[standalone@localhost:9999 /] ./subsystem=threads:read-resource(recursive=true)
{
    "outcome" => "success",
    "result" => {
        "bounded-queue-thread-pool" => undefined,
        "queueless-thread-pool" => undefined,
        "scheduled-thread-pool" => undefined,
        "thread-factory" => {"http" => {
            "name" => "http",
            "priority" => 9,
            "thread-name-pattern" => "HTTP-%t"
        }},
        "unbounded-queue-thread-pool" => {"http" => {
            "max-threads" => {
                "count" => big decimal 10,
                "per-cpu" => big decimal 20
            },
            "name" => "http",
            "thread-factory" => "http"
        }}
    }
}

the connector using it

That is just a standard http connector that uses the thread-pool defined above.

[standalone@localhost:9999 /] ./subsystem=web/connector=http:read-resource
{
    "outcome" => "success",
    "result" => {
        "executor" => "http",
        "protocol" => "HTTP/1.1",
        "scheme" => "http",
        "socket-binding" => "http",
        "ssl" => undefined,
        "virtual-server" => undefined
    }
}