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Date: Mon, 21 Aug 2006 17:42:53 +0900 From: Magnus Damm <magnus@...inux.co.jp> To: Andi Kleen <ak@...e.de> Cc: Christoph@...-sf-spam2.sourceforge.net, Rik van Riel <riel@...hat.com>, Linux@...-sf-spam2.sourceforge.net, ckrm-tech@...ts.sourceforge.net, Dave Hansen <haveblue@...ibm.com>, List <linux-kernel@...r.kernel.org>, Kirill Korotaev <dev@...ru>, Hellwig <hch@...radead.org>, Andrey Savochkin <saw@...ru>, devel@...nvz.org, rohitseth@...gle.com, hugh@...itas.com, Ingo Molnar <mingo@...e.hu>, Alan Cox <alan@...rguk.ukuu.org.uk>, Pavel Emelianov <xemul@...nvz.org> Subject: Re: [ckrm-tech] [PATCH 4/7] UBC: syscalls (user interface) On Mon, 2006-08-21 at 09:48 +0200, Andi Kleen wrote: > > You may be looking for the NUMA emulation patches posted here: > > > > http://marc.theaimsgroup.com/?l=linux-mm&m=112806587501884&w=2 > > > > There is a slightly updated x86_64 version here too: > > > > http://marc.theaimsgroup.com/?l=linux-mm&m=113161386520342&w=2 > > Hmm, I must have missed that version. Seems like a improvement. Best you > resubmit it, although I'll probably only take it after the .19 merge No problem. The second URL pointed to a x86_64 version where I tried to break out code to make some kind of generic NUMA emulation layer. At that time no one seemed interested in that strategy as a simple resource control solution so I gave that up. For x86_64 I think it's only worth mucking around with the code if people believe that it is the right way to go for in-kernel resource control. The x86_64 patches above include code to divide each real NUMA node into several smaller emulated nodes, but that is kind of pointless if people only use it for non-resource control purposes, ie just to play with CPUSETS and NUMA on non-NUMA hardware. For simple purposes like that I think the existing NUMA emulation code for x86_64 works perfectly well. I still think that i386 users would benefit from NUMA emulation though. If you want me to up-port the i386-specific code just let me know. Thanks, / magnus - 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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