Ram Gupta writes:
> On 1/23/06, Nikita Danilov <[email protected]> wrote:
>
> >
> > The unique feature that Mac OS X VM does have, on the other hand, is
> > that it keeps profiles of access patterns of applications, and stores
> > then in files, associated with executables. This allows to quickly
> > pre-fault necessary pages during application startup (and this makes OSX
> > boot so fast).
>
> This feature is interesting though I am not sure about the fast boot
> part of OSX.
> as at boot time these applications are all started first time. So
> there were no access pattern as yet. They still have to be demand
That's the point: information about access patterns is stored in the
file. So next time when application is started (e.g., during boot)
kernel reads that file and pre-faults pages.
> paged. But yes later accesses may be faster.
>
> Thanks
> Ram gupta
Nikita.
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