정보처리학회논문지A (The KIPS Transactions:PartA)

한국정보처리학회 (Korea Information Processing Society)
권호 표지

멀티미디어 End-to-End 서버용 리눅스 기반 I/O 시스템 설계 및 구현

The Design and Implementation of the Multimedia End-to-End Server I/O System based on Linux

  • 남상준 (고려대학교 컴퓨터학과 석사과정 재학중) ;
  • 이병래 (고려대학교 컴퓨터학과 박사과정 재학) ;
  • 박남섭 (고려대학교 컴퓨터학과 박사과정 재학) ;
  • 이윤정 (고려대학교 컴퓨터학과 박사과정 재학) ;
  • 김태윤 (고려대학교 컴퓨터학과)
  • 발행 : 2001.12.01
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초록

최근 인터넷의 확산으로 인하여 멀티미디어 서비스에 대한 사용자의 요구가 증가되고 있다. 그러나 서버 시스템들은 이러한 사용자들에게 멀티미디어 데이터를 효과적으로 공급하지 못하고 있다. 멀티미디어 응용 프로그램들은 같은 데이터를 여러 장치들 사이에서 경로를 유지하기 때문에 부하가 발생하고, 효과적인 I/O(Input/Output) 서브시스템이 요구되어지고 있다. 멀티미디어 데이터를 효과적으로 공급하지 못하는 비효율적인 I/O의 원인으로 잦은 데이터 복사와 문맥교환이라고 인식되어 왔다. 따라서 본 논문에서는 리눅스 시스템에 새로운 Multimedia Stream System Call (MSSC) 메커니즘을 제안한다: RTP(Real-time Transport Protocol) 프로토콜과 함께 이 메커니즘은 커널 영역에서 수행하도록 하는 것이다. 이 MSSC 메커니즘을 사용한 결과 일반적인 리눅스 시스템보다 12.5%∼14%의 성능이 향상됨을 보여준다.

In recent years, users\` demands for multimedia service are increasing because of a diffusion of internet. Server systems, however, offer inefficient multimedia data service to users. Multimedia applications often transfer the same data between shared devices at very high rates, and therefore require an efficient I/O subsystem. Data copying and context switching have long been identified as sources of I/O inefficiency. Therefore we propose the new Multimedia Stream System Call (MSSC) mechanism, which is inserted into a Linux kernel: The MSSC mechanism operates in kernel domain with RTP (Real-time Transport Protocol). We present measurements indicating that use of our techniques resulted in a 12.5%∼14% gain in throughput as compared with a conventional Linux system.

키워드

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