Sending Large Data

Use these QoS fields to optimize the process of sending large data.

Use these QoS fields to optimize the process of sending large data.

This includes QoS which help to reduce the number of copies needed and manage fragmentation.

See Sending Large Data, in the Core Libraries User's Manual, for more information.

Basic Settings

dds::core::policy::DataRepresentation	compression_settings
	<<basic>> <<extension>> Structure that contains the compression settings.

Advanced Settings

rti::core::CompressionSettings	compression_ids
	<<extension>> Mask that represents the compression algorithms enabled.
rti::core::CompressionSettings	writer_compression_level
	<<extension>> The level of compression to use when compressing data.
rti::core::CompressionSettings	writer_compression_threshold
	<<extension>> The threshold, in bytes, above which a serialized sample will be eligible to be compressed.
rti::core::policy::DataReaderResourceLimits	disable_fragmentation_support
	[DEPRECATED] <<extension>> Determines whether the dds::sub::DataReader can receive fragmented samples.
rti::core::policy::DataReaderResourceLimits	max_fragmented_samples
	<<extension>> The maximum number of samples for which the dds::sub::DataReader may store fragments at a given point in time.
rti::core::policy::DataReaderResourceLimits	initial_fragmented_samples
	<<extension>> The initial number of samples for which a dds::sub::DataReader may store fragments.
rti::core::policy::DataReaderResourceLimits	max_fragmented_samples_per_remote_writer
	<<extension>> The maximum number of samples per remote writer for which a dds::sub::DataReader may store fragments.
rti::core::policy::DataReaderResourceLimits	max_fragments_per_sample
	<<extension>> Maximum number of fragments for a single sample.
rti::core::policy::DataReaderResourceLimits	dynamically_allocate_fragmented_samples
	<<extension>> Determines whether the dds::sub::DataReader pre-allocates storage for storing fragmented samples.
rti::core::policy::DataReaderResourceLimits	shmem_ref_transfer_mode_attached_segment_allocation
	<<extension>> Allocation resource for the shared memory segments attached by the dds::sub::DataReader.
rti::core::policy::DataWriterResourceLimits	writer_loaned_sample_allocation
	<<extension>> Represents the allocation settings of loaned samples managed by a dds::pub::DataWriter.
rti::core::policy::DataWriterResourceLimits	initialize_writer_loaned_sample
	<<extension>> Whether or not to initialize loaned samples returned by a dds::pub::DataWriter
rti::core::policy::DataWriterTransferMode	shmem_ref_settings
	<<extension>> Settings related to transferring data using shared memory references.
rti::core::policy::DomainParticipantResourceLimits	shmem_ref_transfer_mode_max_segments
	<<extension>> Maximum number of segments created by all DataWriters belonging to a dds::domain::DomainParticipant.
rti::core::policy::DiscoveryConfig	endpoint_type_object_lb_serialization_threshold
	<<extension>> Option to reduce the size required to propagate a TypeObject in Simple Endpoint Discovery
rti::core::policy::BuiltinTopicReaderResourceLimits	disable_fragmentation_support
	[DEPRECATED] <<extension>> Determines whether the built-in topic dds::sub::DataReader can receive fragmented samples.
rti::core::policy::BuiltinTopicReaderResourceLimits	max_fragmented_samples
	<<extension>> The maximum number of samples for which the built-in topic dds::sub::DataReader may store fragments at a given point in time.
rti::core::policy::BuiltinTopicReaderResourceLimits	initial_fragmented_samples
	<<extension>> The initial number of samples for which a built-in topic dds::sub::DataReader may store fragments.
rti::core::policy::BuiltinTopicReaderResourceLimits	max_fragmented_samples_per_remote_writer
	<<extension>> The maximum number of samples per remote writer for which a built-in topic dds::sub::DataReader may store fragments.
rti::core::policy::BuiltinTopicReaderResourceLimits	max_fragments_per_sample
	<<extension>> Maximum number of fragments for a single sample.
rti::core::policy::BuiltinTopicReaderResourceLimits	dynamically_allocate_fragmented_samples
	<<extension>> Determines whether the built-in topic dds::sub::DataReader pre-allocates storage for storing fragmented samples.