On 09/07/2017 03:32 PM, Kevin Wilson wrote: > Hi, > > I have Ubuntu 14.04.5 LTS on x86_64 machine. I am using the > kernel as shipped with the distro, no modification whatsoever. > After fresh reboot I do see Numa node 1 but there is no Numa node 0 under: > > /sys/devices/system/node > https://www.kernel.org/doc/ols/2004/ols2004v1-pages-89-102.pdf > > What can be the reason for this ? lscpu shows two sockets but only one > NUMA node: > > lscpu > Architecture: x86_64 > CPU op-mode(s): 32-bit, 64-bit > Byte Order: Little Endian > CPU(s): 16 > On-line CPU(s) list: 0-15 > Thread(s) per core: 2 > Core(s) per socket: 4 > Socket(s): 2 > NUMA node(s): 1 > ... > > > and > cat /boot/config-4.4.0-31-generic | grep CONFIG_NUMA > shows: > CONFIG_NUMA_BALANCING=y > CONFIG_NUMA_BALANCING_DEFAULT_ENABLED=y > CONFIG_NUMA=y > # CONFIG_NUMA_EMU is not set > > Also > dmesg | grep -i numa > [ 0.000000] NUMA: Initialized distance table, cnt=2 > [ 0.000000] NUMA: Node 1 [mem 0x00000000-0xbfffffff] + [mem > 0x100000000-0x33fffffff] -> [mem 0x00000000-0x33fffffff] > > > Any ideas ? > Regards, > Kevin > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > -- So many immigrant groups have swept through our town that Brooklyn, like Atlantis, reaches mythological proportions in the mind of the world - RI Safir 1998 http://www.mrbrklyn.com DRM is THEFT - We are the STAKEHOLDERS - RI Safir 2002 http://www.nylxs.com - Leadership Development in Free Software http://www2.mrbrklyn.com/resources - Unpublished Archive http://www.coinhangout.com - coins! http://www.brooklyn-living.com Being so tracked is for FARM ANIMALS and and extermination camps, but incompatible with living as a free human being. -RI Safir 2013 _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
