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    SubjectRe: [patch 2/3] slub: scan partial list for free slabs when thrashing
    On Sun, 29 Mar 2009, David Rientjes wrote:

    > Whenever a cpu cache satisfies a fastpath allocation, a fastpath counter
    > is incrememted. This counter is cleared whenever the slowpath is
    > invoked. This tracks how many fastpath allocations the cpu slab has
    > fulfilled before it must be refilled.

    That adds fastpath overhead and it shows for small objects in your tests.

    > A new statistic, /sys/kernel/slab/cache/deferred_partial, indicates how
    > many times a partial list was deferred because no slabs could satisfy
    > the requisite number of objects for CONFIG_SLUB_STATS kernels.

    Interesting approach.

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      Last update: 2009-03-30 16:45    [from the cache]
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