Messages in this thread |  | | Date | Thu, 8 Nov 2001 20:40:50 +0100 (CET) | From | Ingo Molnar <> | Subject | Re: [patch] scheduler cache affinity improvement for 2.4 kernels |
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On Thu, 8 Nov 2001, Davide Libenzi wrote:
> It sets the time ( in jiffies ) at which the process won't have any > more scheduling advantage.
(sorry, it indeed makes sense, since sched_jtime is on the order of jiffies.)
> > and your patch adds a scheduling advantage to processes with more cache > > footprint, which is the completely opposite of what we want. > > It is exactly what we want indeed :
if this is what is done by your patch, then we do not want to do this. My patch does not give an advantage of CPU-intensive processes over that of eg. 'vi'. Perhaps i'm misreading your patch, it's full of branches that does not make the meaning very clear, cpu_jtime and sched_jtime are not explained. Is sched_jtime the timestamp of the last schedule of this process? And is cpu_jtime the number of jiffies spent on this CPU? Is cpu_jtime cleared if we switch to another CPU?
Ingo
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