On Monday 21 August 2006 10:42, Magnus Damm wrote: > 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.
Does it by chance fix the existing code? Andrew has been complaining (and I could reproduce) that numa=fake=16 makes it triple fault at boot. The theory was that it didn't like empty nodes which can happen this way. I unfortunately didn't have time to look into it closely so far. > 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. I personally have my doubts about 32bit NUMA -- it will always have ZONE_NORMAL only on a single node, which limits it very much. But ok I guess it might be useful to somebody. -Andi ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ ckrm-tech mailing list https://lists.sourceforge.net/lists/listinfo/ckrm-tech
