Messages in this thread | | | Date | Mon, 30 Mar 2009 10:37:48 -0400 (EDT) | From | Christoph Lameter <> | Subject | Re: [patch 2/3] slub: scan partial list for free slabs when thrashing |
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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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