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Scaling Media Servers for High-Performance Audio/Video Mixing with Grid-Based Architecture

Utilize multiple media servers to scale to various codecs and audio/video versions. Employ XGSP-based control and NaradaBrokering filters for efficient messaging. Access Grid-native services, with SIP and H.323 support. Performance is enhanced through distributed scaling, with gateways converting to uniform XGSP messaging. Integration of PDA, cell phone, and desktop grid access further enriches the architecture.

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Scaling Media Servers for High-Performance Audio/Video Mixing with Grid-Based Architecture

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  1. Session Server XGSP-based Control Media Servers Filters NaradaBrokering All Messaging Admire SIP H323 Access Grid Native XGSP GlobalMMCS Web Service MCU Architecture Use Multiple Media servers to scale to many codecs and many versions of audio/video mixing WebServices NB Scales asdistributed High Performance (RTP)and XML/SOAP and .. Gateways convert to uniform XGSP Messaging NaradaBrokering

  2. NaradaBrokering BrokersONLY process messages

  3. Mean transit delay for message samples in NaradaBrokering: Different communication hops 9 hop-2 hop-3 8 hop-5 7 hop-7 6 5 Transit Delay (Milliseconds) 4 3 2 1 0 100 1000 Message Payload Size (Bytes) Pentium-3, 1GHz, 256 MB RAM 100 Mbps LAN JRE 1.3 Linux

  4. Average delays per packet for 50 video-clients NaradaBrokering Avg=2.23 ms, JMF Avg=3.08 ms 60 NaradaBrokering-RTP JMF-RTP 50 40 30 Delay (Milliseconds) 20 10 0 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Packet Number

  5. Average jitter (std. dev) for 50 video clients. NaradaBrokering Avg=0.95 ms, JMF Avg=1.10 ms 8 NaradaBrokering-RTP JMF-RTP 7 6 5 4 Jitter (Milliseconds) 3 2 1 0 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Packet Number

  6. Integration of PDA, Cell phone and Desktop Grid Access

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