Messages in this thread | | | Date | Sun, 29 Nov 1998 06:44:49 -0500 (EST) | From | "Albert D. Cahalan" <> | Subject | Re: SMP scalability: 8 -> 32 CPUs |
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Larry McVoy writes:
> The basic point is that if you do both SMP and UP have two choices: > > - #ifdef SMP the kernel and essentially run one kernel on UP > and a different kernel on SMP > > - No ifdefs, run the SMP kernel on the UP's
- Self-modifying kernel
> The first choice is the route taken by SGI, > the second is the route taken by Sun.
The third is the route taken by Digital (Compaq).
The kernel can modify itself to adjust for 5 different environments: plain, SMP, real-time, real-time SMP, and debug checks.
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