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PERFORMANCE EVALUATION OF VIDEO STREAMING ON A ROCKS CLUSTER

 

TITLE PERFORMANCE EVALUATION OF VIDEO STREAMING ON A ROCKS CLUSTER
AUTHOR TEERADACH JOHNSAMER
DEGREE MASTER OF SCIENCE PROGRAMME IN COMPUTER SCIENCE
FACULTY FACULTY OF SCIENCE
ADVISOR SUDSANGUAN NGAMSURIYAROJ
CO-ADVISOR RAWESAK TANAWONGSUWAN
SUPAVADEE ARAMVITH
 
ABSTRACT
In this research project, a performance evaluation is carried out on video streaming servers implemented on a Rocks cluster, using a variety of benchmarking tools. Two file systems: Parallel Virtual File System (PVFS2) and Linux Virtual Server (LVS) are tested. The PVFS2 is a parallel file system that typically stripes files across nodes, and every node has the same view of the file so that data can be shared across nodes. The LVS is preferable for load balancing as one node is responsible for distributing traffic to all nodes in the cluster. The performance of PVFS2 and LVS implementation on a Rocks cluster are compared using three software tools called Webbench, Httperf, and RealTracer. Webbench gives two metrics: the throughput in bytes per second and the number of requests per second. Httperf provides the response time and the transfer time. RealTracer gives four metrics: the bandwidth, the frame rate, the jitter and the frame lost. Webbench and Httperf use the HTTP protocol while RealTracer uses RTSP protocol for sending data. The experiments are conducted using different parameters such as the request rates and the video file size. The results show that, overall, LVS has better performance than PVFS2. For the performance of 10 LVS scheduling algorithms, the Destination Hashing Scheduling gives a lower performance than other LVS algorithms. In addition, the RealTracer does not give different outcomes between PVFS2 and LVS.
KEYWORD VIDEO STREAMING/ROCKS CLUSTER/ PARALLEL VIRTURL FILE SYSTEM / LINUX VIRTUAL SERVER/PERFORMANCE EVALUATION

 

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