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ÇѱÛÁ¦¸ñ(Korean Title) |
µ¿¿µ»ó ½ºÆ®¸®¹Ö ¼ºñ½ºÀÇ QoSÀ¯Áö¸¦ À§ÇÑ µà¾ó Æ®·£½ºÄÚµù ±â¹ý |
¿µ¹®Á¦¸ñ(English Title) |
A Dual Transcoding Method for Retaining QoS of Video Streaming Services under Restricted Computing Resources |
ÀúÀÚ(Author) |
¿ÀµÎȯ
³ë¿ø¿ì
Doohwan Oh
Won Woo Ro
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¿ø¹®¼ö·Ïó(Citation) |
VOL 03 NO. 07 PP. 0231 ~ 0240 (2014. 07) |
Çѱ۳»¿ë (Korean Abstract) |
½ºÆ®¸®¹Ö ¼ºñ½º¿¡ »ç¿ëµÇ´Â Æ®·£½ºÄÚµù ¼¹ö´Â µ¿½Ã¿¡ ´Ù¼öÀÇ Æ®·£½ºÄÚµù ¿äûÀ» ó¸®ÇÑ´Ù. ÇÏÁö¸¸ Æ®·£½ºÄÚµù ¿¬»êÀÇ ºÎÇÏ°¡ ³ô±â ¶§¹®¿¡ ´ÜÀÏ ¼¹ö°¡ ¼ö¿ëÇÒ ¼ö ÀÖ´Â ¿äû °³¼ö´Â Á¦ÇÑÀûÀÏ ¼ö¹Û¿¡ ¾ø´Ù. º» ³í¹®¿¡¼´Â ´ÜÀÏ ¼¹öÀÇ Æ®·£½ºÄÚµù ¼º´ÉÀ» ³ôÀÌ°íÀÚ CPU ±â¹Ý Æ®·£½ºÄÚ´õ¿Í GPU ±â¹Ý Æ®·£½ºÄÚ´õ¸¦ µ¿½Ã¿¡ »ç¿ëÇÏ´Â µà¾ó Æ®·£½ºÄÚµù ¹æ¹ýÀ» Á¦¾ÈÇÑ´Ù. µà¾ó Æ®·£½ºÄÚµù ¹æ¹ýÀº Æ®·£½ºÄÚµù ¿äûÀ» ó¸®Çϱâ Àü¿¡ ¿öÅ©·Îµå¸¦ ¿¹ÃøÇÏ¿© ÇØ´ç ¿äû¿¡ ´ëÇÑ QoSÀ¯Áö°¡ °¡´ÉÇÑÁö ÆÇ´ÜÇÑ´Ù. QoSÀ¯Áö°¡ °¡´ÉÇÏ´Ù°í ÆǴܵǸé CPU ¶Ç´Â GPU Æ®·£½ºÄÚ´õ Áß º¸´Ù ÀûÇÕÇÑ Å¸ÀÔÀÇ ÀåÄ¡¿¡ ÀÛ¾÷À» ÇÒ´çÇÔÀ¸·Î½á ¿¬»ê ÀÚ¿øÀÇ È¿À²¼ºÀ» ³ôÀδÙ. ¼º´É Æò°¡ °á°ú µà¾ó Æ®·£½ºÄÚµù ±â¹ýÀº ±âÁ¸ ¹æ½Ä ´ëºñ ÃÖ´ë 1.84¹èÀÇ ¼º´É Çâ»óÀ» ÀÌ·ç¾ú´Ù. °á°úÀûÀ¸·Î ´ÜÀÏ ¼¹ö°¡ º¸´Ù ¸¹Àº »ç¿ëÀÚÀÇ ¿äûÀ» QoS À¯Áö ÇÏ¿¡ Á¦°øÇÒ ¼ö ÀÖ°Ô µÇ¾ú´Ù.
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¿µ¹®³»¿ë (English Abstract) |
Video transcoding techniques provide an efficient mechanism to make a video content adaptive to the capabilities of a variety of clients. However, it is hard to provide an appropriate quality-of-service(QoS) to the clients owing to heavy workload on transcoding operations. In light of this fact, this paper presents the dual transcoding method in order to guarantee QoS in streaming services by maximizing resource usage in a transcoding server equipped with both CPU and GPU computing units. The CPU and GPU computing units have different architectural features. The proposed method speculates workload of incoming transcoding requests and then schedules the requests either to the CPU or GPU accordingly. From performance evaluation, the proposed dual transcoding method achieved a speedup of 1.84 compared with traditional transcoding approach.
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Å°¿öµå(Keyword) |
µ¿¿µ»ó ½ºÆ®¸®¹Ö
µ¿¿µ»ó Æ®·£½ºÄÚµù
ÀÛ¾÷ ½ºÄÉÁÙ¸µ
ÀÌÁ¾ ¿¬»ê ÀåÄ¡
GPGPU
Video Streaming
Video Transcoding
Job Scheduling
Heterogeneous Computing
GPGPU
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