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SubjectRe: Active Memory Defragmentation: Our implementation & problems

--- Dave Hansen <haveblue@us.ibm.com> wrote:
> The "work until we get interrupted and restart if
> something changes
> state" approach is very, very common. Can you give
> some more examples
> of just how a page fault would ruin the defrag
> process?
>

What I mean to say is that if we have identified some
pages for movement, & we get preempted, the pages
identified as movable may not remain movable any more
when we are rescheduled. We are left with the task of
identifying new movable pages.

-Alok

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