[standalone@localhost:9990 /] cd subsystem=io/worker=default
[standalone@localhost:9990 worker=default] :read-resource-description(recursive=true)
{
    "outcome" => "success",
    "result" => {
        "description" => "Defines workers",
        "capabilities" => [{
            "name" => "org.wildfly.io.worker",
            "dynamic" => true
        }],
        "attributes" => {
            "io-threads" => {
                "type" => INT,
                "description" => "\"Specify the number of I/O threads to create for the worker.  If not specified, a default will be chosen, which is calculated by cpuCount * 2\"",
                "expressions-allowed" => false,
                "nillable" => true,
                "access-type" => "read-write",
                "storage" => "configuration",
                "restart-required" => "no-services"
            },
            "stack-size" => {
                "type" => LONG,
                "description" => "The stack size (in bytes) to attempt to use for worker threads.",
                "expressions-allowed" => false,
                "nillable" => true,
                "default" => 0L,
                "access-type" => "read-write",
                "storage" => "configuration",
                "restart-required" => "no-services"
            },
            "task-keepalive" => {
                "type" => INT,
                "description" => "Specify the number of milliseconds to keep non-core task threads alive.",
                "expressions-allowed" => false,
                "nillable" => true,
                "default" => 60,
                "access-type" => "read-write",
                "storage" => "configuration",
                "restart-required" => "no-services"
            },
            "task-max-threads" => {
                "type" => INT,
                "description" => "\"Specify the maximum number of threads for the worker task thread pool.If not set, default value used which is calculated by formula cpuCount * 16\"",
                "expressions-allowed" => false,
                "nillable" => true,
                "access-type" => "read-write",
                "storage" => "configuration",
                "restart-required" => "no-services"
            }
        },
        "operations" => undefined,
        "notifications" => undefined,
        "children" => {}
    }
}