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On Tue, 20 Nov 2001, David S. Miller wrote: > From: Andrew Morton <akpm@zip.com.au> > Date: Tue, 20 Nov 2001 14:23:38 -0800 > > Could you please explain further? What's more expensive > than the copy? > > TLB misses add to the cost, and this overhead is more than > "noise". Well, this could have something to do with the fact that our page fault handler only maps in _1_ page at a time, so we're trapping into the pagefault handler every 4kB... Rik -- Shortwave goes a long way: irc.starchat.net #swl http://www.surriel.com/ http://distro.conectiva.com/ - 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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