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Date: Sun, 10 Dec 2006 10:37:57 +0100 From: Arjan van de Ven <arjan@...radead.org> To: John Richard Moser <nigelenki@...cast.net> Cc: linux-kernel@...r.kernel.org Subject: Re: PAE/NX without performance drain? On Sat, 2006-12-09 at 15:39 -0500, John Richard Moser wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Apparently (as I've been told today) using a hardware NX bit in a 32-bit > x86 kernel requires PAE mode. PAE mode is enabled with HIGHMEM64, which > is (apparently) extremely slow. it's not extremely slow. there is a minor performance delta, sure, but to be honest that's a benchmark thing more than a real life thing. What did your measurements show that the slowdown was? And how did you measure this? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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