<cm:property-placeholder persistent-id="org.opendaylight.netty.threadgroup" update-strategy="none">
<cm:default-properties>
+ <!-- 0 means use the default number of threads -->
<cm:property name="global-boss-group-thread-count" value="0"/>
<cm:property name="global-worker-group-thread-count" value="0"/>
</cm:default-properties>