Messages in this thread | | | Date | Mon, 14 Jan 2002 11:39:10 -0700 | From | yodaiken@fsmlabs ... | Subject | Re: [2.4.17/18pre] VM and swap - it's really unusable |
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On Mon, Jan 14, 2002 at 07:43:59PM +0100, Daniel Phillips wrote: > On January 14, 2002 10:09 am, yodaiken@fsmlabs.com wrote: > > UNIX generally tries to ensure liveness. So you know that > > cat lkarchive | grep feel | wc > > will complete and not just that, it will run pretty reasonably because > > for UNIX _every_ process is important and gets cpu and IO time. > > When you start trying to add special low latency tasks, you endanger > > liveness. And preempt is especially corrosive because one of the > > mechanisms UNIX uses to assure liveness is to make sure that once a > > process starts it can do a significant chunk of work. > > You're claiming that preemption by nature is not Unix-like?
Kernel preemption is not traditionally part of UNIX.
> > -- > Daniel
-- --------------------------------------------------------- Victor Yodaiken Finite State Machine Labs: The RTLinux Company. www.fsmlabs.com www.rtlinux.com
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