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Date: Fri, 16 Jan 2009 11:20:32 +0100 From: Andi Kleen <andi@...stfloor.org> To: "Zhang, Yanmin" <yanmin_zhang@...ux.intel.com> Cc: Matthew Wilcox <matthew@....cx>, Nick Piggin <nickpiggin@...oo.com.au>, Andrew Morton <akpm@...ux-foundation.org>, netdev@...r.kernel.org, sfr@...b.auug.org.au, matthew.r.wilcox@...el.com, chinang.ma@...el.com, linux-kernel@...r.kernel.org, sharad.c.tripathi@...el.com, arjan@...ux.intel.com, suresh.b.siddha@...el.com, harita.chilukuri@...el.com, douglas.w.styner@...el.com, peter.xihong.wang@...el.com, hubert.nueckel@...el.com, chris.mason@...cle.com, srostedt@...hat.com, linux-scsi@...r.kernel.org, andrew.vasquez@...gic.com, anirban.chakraborty@...gic.com Subject: Re: Mainline kernel OLTP performance update "Zhang, Yanmin" <yanmin_zhang@...ux.intel.com> writes: > I think that's because SLQB > doesn't pass through big object allocation to page allocator. > netperf UDP-U-1k has less improvement with SLQB. That sounds like just the page allocator needs to be improved. That would help everyone. We talked a bit about this earlier, some of the heuristics for hot/cold pages are quite outdated and have been tuned for obsolete machines and also its fast path is quite long. Unfortunately no code currently. -Andi -- ak@...ux.intel.com -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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