Date: Thu, 27 Oct 2005 23:54:57 -0500 From: Doug Poland <doug@polands.org> To: freebsd-current@freebsd.org Subject: 6.0 and "options PREEMPTION" Message-ID: <20051028045457.GA44396@polands.org>
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Hello, I'm confused about 6.0 and the kernel setting "options PREEMPTION". I was reading an article on OS News: http://www.osnews.com/story.php?news_id=10951 in which Robert Watson stated, One of the other nice benefits to the SMPVFS work is that with our fully preemptive 6.x kernel, not holding the Giant lock over the file system code lets the file system code not only preempt lower precedence kernel threads, such as background crypto operations or file system operations, but be preempted by more timing critical code, such as sound card interrupts, network I/O, and so on. Does this mean that options PREEMPTION is assumed in 6.0? If not, could someone explain or point me to some docs that will help me understand. -- Regards, Doug
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