>>>>> On Tue, 15 Feb 2005 12:15:19 -0800, William Lee Irwin III <[EMAIL
>>>>> PROTECTED]> said:
>> I certainly don't want to switch my machines to 4-levels. There
>> is zero need for that on the machines I use, so why pay the
>> overhead of an extra level? BTW: why do you want 4-level/16KB
>> over 3-level/64KB?
William> It may be worth noticing that things like fault latency and
William> small writes degrade with increased pagesize, though I seem
William> to recall hearing that this effect was less pronounced or
William> did not set in at 64KB on ia64.
Certainly, but fault-latency also increase with the number of levels.
And there are real customers who care about page-fault latency a lot
which run apps where the probability of the page-table entries being
in the cache is close to zero...
I'm not advocating one over the other --- I'm pro choice... ;-)
--david
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