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Revision Date Username Comment
803 Oct 2013 - 15:56norqu036? 
729 Apr 2013 - 10:32NicLewis 
626 Apr 2013 - 09:24NicLewis 
514 Mar 2013 - 09:28NicLewis 
411 Mar 2013 - 10:58NicLewis 
308 Mar 2013 - 11:09NicLewis 
225 Feb 2013 - 10:43NicLewis 
121 Feb 2013 - 09:25NicLewis 

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You are here: UMWiki>CBI_ComputerSecurity Web>Systems>SystemsMACH (revision 3)

MACH

 

A Carnegie Mellon project from 1985 to 1994, Mach was a multiprocessor operating system kernel intended as a replacement for the traditional Unix kernel. Unix was originally designed to treat all objects as files, a feature that caused performance issues as Unix program and installation sizes increased. The Mach kernel, however, re-designated objects as tasks, and moved a large portion of the operating system code out of the kernel, and into user space. The consequence was not only a smaller, lighter-weight kernel, but the ability to process tasks in multiple threads on the processor(s), rather than the OS manage each task one-at-a-time as a file.

Although the Mach project ended in 1994, derivatives of the Mach kernel survived in Unix-like BSD-based operating systems. NeXT Computer, founded in 1985 by Steve Jobs after being forced out of Apple Computer, selected the Mach 2.5 kernel for its NeXTSTEP operating system. When Steve Jobs returned to Apple in 1997, Apple purchased NeXT for the purpose of acquiring the NeXTSTEP OS, which served as the basis of Mac OS X.

Sources:
http://en.wikipedia.org/wiki/Mach_(kernel)
http://en.wikipedia.org/wiki/NeXTSTEP

  • lock mach_usenix86.pdf: 1986 USENIX paper presenting the Mach kernel concept: "Mach: A New Kernel Foundation for UNIX Development." (Login required)

-- Main.lewi0740 - 19 Sep 2012

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Topic revision: r3 - 08 Mar 2013 - 11:09:17 - NicLewis
 
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