default max threads for jax-rs in osgi bundle

Hi,

I am using apache cxf 2.4.3 with servicemix 4.4.1. I'm trying to build a
rest service using jax-rs and deploy it as an osgi bundle. I'm concerned
about the maximum threads that I can have, is there any default value or it
depends on the memory heap? I have been searching cxf documents but couldn't
find an answer, thanks ahead!

Here is my beans.xml:
<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:util="http://www.springframework.org/schema/util"
xmlns:jaxrs="http://cxf.apache.org/jaxrs"
xmlns:cxf="http://cxf.apache.org/core"
xmlns:osgix="http://www.springframework.org/schema/osgi-compendium"
xmlns:ctx="http://www.springframework.org/schema/context"

xsi:schemaLocation="
http://www.springframework.org/schema/jdbc
http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-3.0.xsd
http://cxf.apache.org/core http://cxf.apache.org/schemas/core.xsd
http://cxf.apache.org/jaxrs http://cxf.apache.org/schemas/jaxrs.xsd
http://www.springframework.org/schema/osgi-compendium

http://www.springframework.org/schema/osgi-compendium/spring-osgi-compendium.xsd">

<import resource="classpath:META-INF/cxf/cxf.xml" />
<import resource="classpath:META-INF/cxf/cxf-servlet.xml" />

<context:property-placeholder
location="classpath*:META-INF/spring/*.properties" />
<context:annotation-config />
<context:component-scan base-package="com.rest.test" />

<bean name="create" class="com.rest.test.service.MktCreateUrl">
</bean>
<bean name="retrieve" class="com.rest.test.service.MktRetrieveUrl">
</bean>

<jaxrs:server id="rest-web-services" address="http://0.0.0.0:8282">
<jaxrs:serviceBeans>
<ref bean="create" />
<ref bean="retrieve" />
</jaxrs:serviceBeans>
</jaxrs:server>
</beans>