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Message-ID: <20081103104807.GN13671@elte.hu> Date: Mon, 3 Nov 2008 11:48:07 +0100 From: Ingo Molnar <mingo@...e.hu> To: Dave Airlie <airlied@...il.com> Cc: Keith Packard <keithp@...thp.com>, Jesse Barnes <jbarnes@...tuousgeek.org>, Nick Piggin <nickpiggin@...oo.com.au>, Dave Airlie <airlied@...ux.ie>, Yinghai Lu <yinghai@...nel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Linus Torvalds <torvalds@...ux-foundation.org> Subject: Re: io resources and cached mappings (was: [git pull] drm patches for 2.6.27-rc1) * Dave Airlie <airlied@...il.com> wrote: > On Fri, Oct 24, 2008 at 1:39 AM, Keith Packard <keithp@...thp.com> wrote: > > On Thu, 2008-10-23 at 10:05 +0200, Ingo Molnar wrote: > > > >> Any ballpark-figure numbers you can share with us? > > > > For one quake-3 based game we use for performance regression checking, > > 64-bit kernels run about 18 times faster now. That's the difference > > between using a zero-cost dynamic mapping and using ioremap_wc for each > > page. > > > > -- > > keith.packard@...el.com > > > > So I've put these patches into Fedora rawhide kernel to test, and > glxgears on my 945G hw went from 85fps to 380fps, clearly we would > want these patches upstream sooner rather than later. yep, it's all lined up already in tip/core/resources, and got massively tested over the past few days. Will send a pull request to Linus tomorrow-ish - we need one final cleanup patch and then it's green to go. Ingo -- 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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