Messages in this thread |  | | | From | (Alan Cox) | | Subject | Re: MMX for kernel | | Date | Sat, 8 Feb 1997 01:06:05 +0000 (GMT) |
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> and what about runnung 2+ FP cmopute jobs on a dual-PPro200 (SMP) machine ? > how often do processes switch from one CPU to another needing to save/reload > FPU registers and hardware faults ?
The kernel weights a process to avoid it flipping CPU's casually. On the SMP kernel we don't do lazy safe/restore because we may need to do cross CPUr restores quite often which gets expensive.
Alan
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