Re: VM Functional Requirements - lets get started

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On November 23, 2001 08:15 pm, Daniel Phillips wrote:
> On November 23, 2001 07:52 pm, Daniel Phillips wrote:
> > > > Our vm shall:
> >
> >    - Run happily with 90% of memory mlocked
> 
> And...
> 
>   - put memory or disk resources on allotment only when resources limits
>     are reached.
> 
>   - share resources fairly between tasks (did I already say that?)
> 
>   - not swap when it doesn't have to (define have to)
> 
> And ambitiously, under the heading of degrading gracefully:
> 
>   - try to delay the onset of thrashing by sheduling tasks with increasing 
>     coarse granularity so that each running task is able to obtain a 
>     reasonable working set of process memory and file cache.

And:

  - balance read/write traffic so reads do not starve writes and vice versa.  
Similarly, balance program-initiated read/write traffic against swap in/out 
traffic so that neither becomes starved

--
Daniel
--
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