Messages in this thread | | | Date | Wed, 10 Sep 2008 10:08:07 -0700 | From | "Ray Lee" <> | Subject | Re: [PATCH] VM: Implements the swap-out page-clustering technique |
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On Wed, Sep 10, 2008 at 1:16 AM, Hamid R. Jahanjou <hamid.jahanjou@gmail.com> wrote: > I agree. As you said, we have two conflicting requirements here: on the > one hand one likes to swap as many pages as to satisfy the backing > storage "proper block IO size," on the other hand, one should not make a > process lose too many pages.
I'd much rather that one process lose a lot of pages than many processes lose a few. When a system is swap thrashing, each process has some of its active working set tossed to swap, which means *any* application you try to switch to is then sluggish. If it were only one application, then only that one takes the penalty hit when the user switches focus and context.
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