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> The performance delta between 2.5.62-mjb1 and 2.5.62-mjb2 is caused > by the partial object-based rmap patch (written by Dave McCracken). > I expect this patch to have an increasing impact on workloads with > more processes, and it should give a substantial space saving as > well as a performance increase. Results from 16x NUMA-Q system ... > > Profile comparison: > > before > 15525 page_remove_rmap > 6415 page_add_rmap > > after > 2055 page_add_rmap > 1983 page_remove_rmap Did some space consumption comparisons on make -j 256: before: 24116 pte_chain objects in slab cache after: 716 pte_chain objects in slab cache The vast majority of anonymous pages (for which we're using the non object based method) are singletons, and hence use pte_direct ... hence the massive space reduction. M. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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