Messages in this thread | | | Date | Tue, 31 Oct 2000 14:52:11 -0700 | From | "Jeff V. Merkey" <> | Subject | Re: 2.2.18Pre Lan Performance Rocks! |
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Ingo Molnar wrote: > > On Tue, 31 Oct 2000, Pavel Machek wrote: > > > > Excuse me, 857,000,000 instructions executed and 460,000,000 > > > context switches a second -- on a PII system at 350 Mhz. [...] > > > That's more than one context switch per clock. I do not think so. > > Really go and check those numbers. > > yep, you cannot have 460 million context switches on that system, > unless you have some Clintonesque definition for 'context switch' ;-)
The numbers don't lie. You know where the code is. You notice that there is a version of the kernel hand coded in assembly language. You'l also noticed that it's SMP and takes ZERO LOCKS during context switching, in fact, most of the design is completely lockless.
Jeff
> > Ingo > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > Please read the FAQ at http://www.tux.org/lkml/ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
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