Re: [Question] How to understand Clock-Pro algorithm?
From: liyu <hidden>
Date: 2005-09-20 05:02:34
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Hi:
OOh, the original author here! Thanks a lot.
Let's assume Mn is the total number of non-resident pages in follow
words.
Nod, 'M=Mh+Mc' and 'Mc+Mn' < 2M are always true.
Have this implied that Mn is alway less than M? I think so.
but if "Once the number exceeds M the memory size in number of pages,
we terminted the test period of the cold page pointed to by HAND-test."
If Mn is alway less than M, when we move to HAND-test?
Or, my view have error.
I doublt on this, in fact.
Good luck.
Liyu
Song Jiang Wrote:
On Mon, 2005-09-19 at 21:11, liyu wrote:quoted
My question is out:As this paper words, the number of cold page is total of resident cold pages and non-resident pages. It's the seem number of non-resident cold pages can not beyond M at all!You are right. So the total number of pages (non-resident + resident) around the clock is no more than 2m (m is the memory size in pages).quoted
I also have more questions on CLOCK-Pro. but this question is most doublt for me.I am happy to help. I also have the clock-pro simulator that almost exactly simulates what's described in the paper. Let me know if you want it. Song Jiangquoted
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