On Fri, 18 Aug 2006 10:29:16 -0700 Dave Hansen <haveblue at us.ibm.com> wrote: > On Fri, 2006-08-18 at 09:42 -0700, Andrew Morton wrote: > > I have this mad idea that you can divide a 128GB machine up into 256 fake > > NUMA nodes, then you use each "node" as a 512MB unit of memory allocation. > > So that 4.5GB job would be placed within an exclusive cpuset which has nine > > "mems" (what are these called?) and voila: the job has a hard 4.5GB limit, > > no kernel changes needed. > > Is this similar to Mel Gorman's zone-based anti-fragmentation approach? I don't think so - it's using zones, but for a quite different thing. > I thought he was discouraged from pursuing that at the VM summit. That seemed to a be a 49%/51% call, iirc.