Re: [PATCH] Caches that shrink automatically

[Hans Reiser <reiser@namesys.com>]

Rik van Riel wrote:

>On Sun, 4 Aug 2002, Andreas Gruenbacher wrote:
>  
>
>>On Sunday 04 August 2002 13:30, Hans Reiser wrote:
>>    
>>
>>>How do you ensure that caches have their (internal) aging hands pushed
>>>at a speed that is proportional to their memory usage, or is your design
>>>susceptible to all the usual complaints the unified memory manager crowd
>>>has about separate caches?
>>>      
>>>
>>That's a policy/optimization issue; it's not even desirable to shrink the
>>caches with priorities proportional to their size---they would all tend to
>>become equally large.
>>    
>>
>
>Nope, the idea is to push all caches according to size, but
>often-used caches should shrink less than caches that are
>hardly ever used.
>
Do you let the subcache decide how to move the aging hand and track it? 
 Have I convinced you of that one yet?  Or is it still page based?

-- 
Hans