Hi Rakesh,
Yes, in OpenSplice you can. OpenSplice implements the notion of priority-bands implemented by what we call ‘network-channels’ that are characterized by dedicated receive/transmit threads per network-channel as well as traffic-shaping and reactivity-control per network-channel. For all this no specific network hardware is required. There is although a benefit to be gained if you network hardware supports DIFSERV as each network-channel can be configured with its ‘own’ DIFSERV priority. The selection of the priority-band (i.e. network-channel) is done dynamically based on the DDS ‘TransportPriority’ QoS value of the dataWriter that writes a sample. This logical DDS TransportPriority QoS value is ‘matched’ against the configured ranges that each network-channel ‘manages’. So important/high-priority (i.e. high TransportPriority value) DDS-data is sent over a network-channel (aka priority-band) that’s ‘dedicated’ for high-priority-data and in this way will ‘pre-empt’ low-priority-traffic (both at sending-node as well as receiving node). Also ‘within’ a priority-band OpenSplice assures that higher-priority data is sent on the wire before lower-priority data within that priority-band. Regards, Hans * * *Hans van 't Hag* OpenSplice DDS Product Manager PrismTech Netherlands Email: [email protected] Tel: +31742472572 Fax: +31742472571 Gsm: +31624654078 PrismTech is a global leader in standards-based, performance-critical middleware. Our products enable our OEM, Systems Integrator, and End User customers to build and optimize high-performance systems primarily for Mil/Aero, Communications, Industrial, and Financial Markets. ------------------------------ *From:* [email protected] [mailto: [email protected]] *On Behalf Of *Rakesh pawar *Sent:* Friday, October 14, 2011 9:25 AM *To:* developer *Subject:* [OSPL-Dev] Priority based message publishing and Receiving Hi, I need to implement a priority based message publishing and receiving. Is it possible to achieve this in DDS without any dependence on network hardware ? -- Cheers ! Rakesh Pawar
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