On Mon, 12 November 2007 20:41:10 -0800, Christoph Lameter wrote: > On Mon, 12 Nov 2007, Ray Lee wrote: > > > Discontig obviously needs to die. However, FlatMem is consistently > > faster, averaging about 2.1% better overall for your numbers above. Is > > the page allocator not, erm, a fast path, where that matters? > > > > Order Flat Sparse % diff > > 0 639 641 0.3 > > IMHO Order 0 currently matters most and the difference is negligible > there.
Is it? I am a bit concerned about the non-monotonic distribution. Difference starts a near-0, grows to 4.4, drops to near-0, grows to 4.9, drops to near-0. Order Flat Sparse % diff 0 639 641 0.3 1 567 593 4.4 2 679 692 1.9 3 763 781 2.3 4 961 962 0.1 5 1356 1392 2.6 6 2224 2336 4.8 7 4869 5074 4.0 8 12500 12732 1.8 9 27926 28165 0.8 10 58578 58682 0.2 Is there an explanation for this behaviour? More to the point, could repeated runs also return 4% difference for order-0? Jörn -- It does not require a majority to prevail, but rather an irate, tireless minority keen to set brush fires in people's minds. -- Samuel Adams - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
