From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 17 Sep 2006 05:36:02 -0700 (PDT) From: Christoph Lameter Subject: Re: [PATCH] GFP_THISNODE for the slab allocator In-Reply-To: <20060916215545.32fba5c7.akpm@osdl.org> Message-ID: References: <20060914220011.2be9100a.akpm@osdl.org> <20060914234926.9b58fd77.pj@sgi.com> <20060915002325.bffe27d1.akpm@osdl.org> <20060916044847.99802d21.pj@sgi.com> <20060916083825.ba88eee8.akpm@osdl.org> <20060916145117.9b44786d.pj@sgi.com> <20060916161031.4b7c2470.akpm@osdl.org> <20060916215545.32fba5c7.akpm@osdl.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Paul Jackson , linux-mm@kvack.org, rientjes@google.com List-ID: On Sat, 16 Sep 2006, Andrew Morton wrote: > Well yes, there are various things one could do if one wanted to make lots > of kernel changes. I believe Magnus posted some patches along these lines > a while back. I doubt that there would be many kernel chances. This follows straight from the ability to do node hot plug. > But it's not clear that we _need_ to make such changes. > nodes-as-containers works OK out-of-the-box. Apart from the fact that > get_page_from_freelist() sucks. And speeding that up will speed up other > workloads. What you are doing is using nodes to partition memory into small chunks that are then collected in a cpuset. That is not the way how nodes or cpusets were designed to work. > Would prefer to make the kernel faster, rather than more complex... Less nodes and less zones mean smaller zonelists and therefore a faster kernel since we have to traverse shorter lists. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org