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2005
IEEE

A High Performance Kernel-Less Operating System Architecture

10 years 4 months ago
A High Performance Kernel-Less Operating System Architecture
Operating Systems provide services that are accessed by processes via mechanisms that involve a ring transition to transfer control to the kernel where the required function is performed. This has one significant drawback that every service call involves an overhead of a context switch where processor state is saved and a protection domain transfer is performed. However, as we discovered, it is possible, on processor architectures that support segmentation, to achieve a significant performance gain in accessing the services provided by the operating system by not performing a ring transition. Further, such gains can be achieved without compromising on the separation of the privileged components from the unprivileged. KLOS is a Kernel-Less Operating System built on the basis of such a design. The KLOS service call mechanism is an order of magnitude faster than the current widely implemented mechanisms for service or system calls with a 4x improvement over the traditional trap/interrupt...
Amit Vasudevan, Ramesh Yerraballi, Ashish Chawla
Added 24 Jun 2010
Updated 24 Jun 2010
Type Conference
Year 2005
Where ACSC
Authors Amit Vasudevan, Ramesh Yerraballi, Ashish Chawla
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