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    SubjectRe: Large slab cache in 2.6.1
    Ed Tomlinson wrote:

    > On February 21, 2004 10:28 pm, Linus Torvalds wrote:
    >
    >>On Sat, 21 Feb 2004, Chris Wedgwood wrote:
    >>
    >>
    >>>Maybe gradual page-cache pressure could shirnk the slab?
    >>
    >>
    >>What happened to the experiment of having slab pages on the (in)active
    >>lists and letting them be free'd that way? Didn't somebody already do
    >>that? Ed Tomlinson and Craig Kulesa?
    >
    >
    > You have a good memory.
    >
    > We dropped this experiment since there was a lot of latency between the time a
    > slab page became freeable and when it was actually freed. The current
    > call back scheme was designed to balance slab preasure and vmscaning.

    Does it really matter if there is a lot of latency? How does this
    affect real-world results? IOW, if it's not at the end of the LRU, then
    there's probably something better to free instead...

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