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An approach for efficient hybrid sys...

Pathak, Saurabh.

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An approach for efficient hybrid system call interposition.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	An approach for efficient hybrid system call interposition./
Author:	Pathak, Saurabh.
Description:	43 p.
Notes:	Adviser: Prem Uppuluri.
Contained By:	Masters Abstracts International44-01.
Subject:	Computer Science. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=1427820
ISBN:	9780542196003

An approach for efficient hybrid system call interposition.
Pathak, Saurabh.

An approach for efficient hybrid system call interposition. - 43 p.

Adviser: Prem Uppuluri.

Thesis (M.S.)--University of Missouri - Kansas City, 2005.

Hybrid system call interposition (HISC) is an approach to add code to an operating system to extend its functionality. It involves intercepting system calls in the kernel and forwarding those of interest to an extension in the user-level. For HISC to be effective, context switches between the kernel and user and time per context switch should be reduced. Also, the kernel component of the extension should not make the kernel unstable. In this thesis, we present a way to optimize HISC. We add more functionality in the kernel, which makes HISC more efficient. System calls are buffered in the kernel before they are sent to the user-level, which reduces the number of context switches. Only relevant system calls are buffered, saving buffer space and minimizing time per context switch. We implemented our algorithm on a runtime system developed by Sekar et al. [12], which demonstrated a significant improvement in performance.

ISBN: 9780542196003Subjects--Topical Terms:

626642
Computer Science.

An approach for efficient hybrid system call interposition.
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245 1 3 $a An approach for efficient hybrid system call interposition.
300 $a 43 p.
500 $a Adviser: Prem Uppuluri.
500 $a Source: Masters Abstracts International, Volume: 44-01, page: 0404.
502 $a Thesis (M.S.)--University of Missouri - Kansas City, 2005.
520 $a Hybrid system call interposition (HISC) is an approach to add code to an operating system to extend its functionality. It involves intercepting system calls in the kernel and forwarding those of interest to an extension in the user-level. For HISC to be effective, context switches between the kernel and user and time per context switch should be reduced. Also, the kernel component of the extension should not make the kernel unstable. In this thesis, we present a way to optimize HISC. We add more functionality in the kernel, which makes HISC more efficient. System calls are buffered in the kernel before they are sent to the user-level, which reduces the number of context switches. Only relevant system calls are buffered, saving buffer space and minimizing time per context switch. We implemented our algorithm on a runtime system developed by Sekar et al. [12], which demonstrated a significant improvement in performance.
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