Use these QoS fields to configure threads and concurrency settings in RTI Connext.

See Connext Threading Model, in the Core Libraries User's Manual, for more information.

This community article gives a thorough overview of how and why to use many of the QoS listed below: https://community.rti.com/kb/achieving-low-jitter-performance-connext-pro.


DDS_TransportPriorityQosPolicy	value
	<<spec>> This policy is a hint to the infrastructure as to how to set the priority of the underlying transport used to send the data.

DDS_AsynchronousPublisherQosPolicy	disable_asynchronous_write
	[DEPRECATED] <<extension>> Disable asynchronous publishing.

DDS_AsynchronousPublisherQosPolicy	thread
	<<extension>> Settings of the publishing thread.

DDS_AsynchronousPublisherQosPolicy	disable_asynchronous_batch
	[DEPRECATED] <<extension>> Disable asynchronous batch flushing.

DDS_AsynchronousPublisherQosPolicy	asynchronous_batch_thread
	<<extension>> Settings of the batch flushing thread.

DDS_AsynchronousPublisherQosPolicy	disable_topic_query_publication
	[DEPRECATED] <<extension>> Disable topic query publication.

DDS_AsynchronousPublisherQosPolicy	topic_query_publication_thread
	<<extension>> Settings of the DDS_TopicQuery publication thread.

DDS_DiscoveryQosPolicy	metatraffic_transport_priority
	<<extension>> The transport priority to use for the Discovery meta-traffic.

DDS_DataWriterResourceLimitsQosPolicy	initial_concurrent_blocking_threads
	[DEPRECATED] <<extension>> The initial number of threads that are allowed to concurrently block on write call on the same DDS_DataWriter.

DDS_DataWriterResourceLimitsQosPolicy	max_concurrent_blocking_threads
	[DEPRECATED] <<extension>> The maximum number of threads that are allowed to concurrently block on write call on the same DDS_DataWriter.

DDS_EventQosPolicy	thread
	<<extension>> Event thread QoS.

DDS_DatabaseQosPolicy	thread
	<<extension>> Database thread settings.

DDS_ReceiverPoolQosPolicy	thread
	<<extension>> Receiver pool thread(s).

DDS_BatchQosPolicy	thread_safe_write
	<<extension>> Determines whether or not the write operation is thread safe.

DDS_MonitoringEventDistributionSettings	concurrency_level
	<<extension>> Defines how concurrent the push of event metrics to RTI Monitoring Library 2.0 is.

DDS_MonitoringEventDistributionSettings	thread
	<<extension>> The settings of the event metric thread.

DDS_MonitoringPeriodicDistributionSettings	thread
	<<extension>> The settings of the periodic metric thread.

DDS_MonitoringLoggingDistributionSettings	concurrency_level
	<<extension>> Defines how concurrent the push of log messages to RTI Monitoring Library 2.0 is.

DDS_MonitoringLoggingDistributionSettings	thread
	<<extension>> The settings of the logging thread.