On Tuesday 18 November 2008 09:53, Paul Mackerras wrote: > I'd love to be able to use a 4k base page size if I could still get > the reduction in page faults and the expanded TLB reach that we get > now with 64k pages. If we could allocate the page cache for large > files with order-4 allocations wherever possible that would be a good > start.
That can still have nasty side-effects like fragmentation and 64k granular reclaim. It also adds complexity to mapping the pages to userspace. Christoph's patchset IIRC also only did page cache, wheras I suppose your kernbench workload is gaining mainly from anonymous page faults. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
