On 05/14/2012 07:12 AM, Osier Yang wrote:
"Instead of developing one CPU with 12 cores, the Magny Cours is actually two 6 core “Bulldozer” CPUs combined in to one package"
I.e, each package has two NUMA nodes, and the two numa nodes share the same core ID set (0-6), which means parsing the cores number from sysfs doesn't work in this case.
+++ b/tests/nodeinfodata/linux-nodeinfo-sysfs-test-3-cpu-x86-output.txt @@ -1 +1 @@ -CPUs: 48, MHz: 2100, Nodes: 1, Cores: 6 +CPUs: 48, MHz: 2100, Nodes: 1, Cores: 12
I would like to tweak this test to output more information; instead of just outputting nodes and cores, we should also add sockets and threads into the test output, as well as VIR_NODEINFO_MAXCPUS(nodeinfo) (yes, this means updating all three test files); doing so will help us ensure that the numbers we are printing make sense. But I also plan to add a test-4 on a machine with a cpu that was hot-unplugged, to show an instance where CPUs is less than maxcpus, so I can make those changes in my patch. Which means I'm fine with your patch going in, as-is. ACK. -- Eric Blake eblake@redhat.com +1-919-301-3266 Libvirt virtualization library http://libvirt.org