Impact of wrapped system call mechanism on commodity processors

Satoshi Yamada, Shigeru Kusakabe, Hideo Taniguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Split-phase style transactions separate issuing a request and receiving the result of an operation in different threads. We apply this style to system call mechanism so that a system call is split into several threads in order to cut off the mode changes from system call execution inside the kernel. This style of system call mechanism improves throughput, and is also useful in enhancing locality of reference. In this paper, we call this mechanism as Wrapped System Call (WSC) mechanism, and we evaluate the effectiveness of WSC on commodity processors. WSC mechanism can be effective even on commodity platforms which do not have explicit multithread support. We evaluate WSC mechanism based on a performance evaluation model by using a simplified benchmark. We also apply WSC mechanism to variants of cp program to observe the effect on the enhancement of locality of reference. When we apply WSC mechanism to cp program, the combination of our split-phase style system calls and our scheduling mechanism is effective in improving throughput by reducing mode changes and exploiting locality of reference.

Original languageEnglish
Title of host publicationSoftware and Data Technologies - 1st International Conference, ICSOFT 2006, Revised Selected Papers
EditorsJoaquim Filipe, Joaquim Filipe, Markus Helfert, Boris Shishkov, Boris Shishkov, Markus Helfert
PublisherSpringer Verlag
Number of pages12
ISBN (Print)9783540706199
Publication statusPublished - 2008
Event1st International Conference on Software and Data Technologies, ICSOFT 2006 - Setubal, Portugal
Duration: Sept 11 2006Sept 14 2006

Publication series

NameCommunications in Computer and Information Science
ISSN (Print)1865-0929
ISSN (Electronic)1865-0937


Other1st International Conference on Software and Data Technologies, ICSOFT 2006


  • Locality of reference
  • Mode change
  • System call

ASJC Scopus subject areas

  • General Computer Science
  • General Mathematics


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