Thanks, that worked well! lstopo and the output of these commands are in agreement. I consider this mystery (for me anyway) solved.
On Sat, Mar 5, 2016 at 8:57 AM, Samuel Holland <[email protected]> wrote: > On 03/04/2016 05:37 PM, Jeff wrote: > >> The output of lstopo shows that 0-6, 1-7, etc... are paired, which >> is what I originally assumed (as a 4790k is 0-4, 1-5, with similar >> architecture so I'd assume similar), but different from the virsh >> capabilities output (which did not list siblings correctly for me) >> > > If you want to get the information directly from the kernel, try: > > grep . /sys/bus/cpu/devices/*/topology/core_id > grep . /sys/bus/cpu/devices/*/topology/thread_siblings_list > > Pic: https://www.dropbox.com/s/m79l36e32f08b8d/out.png?dl=0 XML: >> https://www.dropbox.com/s/wr93edyszlpcosm/summary.xml?dl=0 So with >> all of that said, is it safe to say the pairings are 0-6, 1-7, 2-8, >> 3-9, 4-10, 5-11 for a 5930k? >> > > That seems to be generally how it works. My Xeon X5675 also has: > > /sys/bus/cpu/devices/cpu0/topology/thread_siblings_list:0,6 > /sys/bus/cpu/devices/cpu1/topology/thread_siblings_list:1,7 > /sys/bus/cpu/devices/cpu2/topology/thread_siblings_list:2,8 > /sys/bus/cpu/devices/cpu3/topology/thread_siblings_list:3,9 > /sys/bus/cpu/devices/cpu4/topology/thread_siblings_list:4,10 > /sys/bus/cpu/devices/cpu5/topology/thread_siblings_list:5,11 > /sys/bus/cpu/devices/cpu6/topology/thread_siblings_list:0,6 > /sys/bus/cpu/devices/cpu7/topology/thread_siblings_list:1,7 > /sys/bus/cpu/devices/cpu8/topology/thread_siblings_list:2,8 > /sys/bus/cpu/devices/cpu9/topology/thread_siblings_list:3,9 > /sys/bus/cpu/devices/cpu10/topology/thread_siblings_list:4,10 > /sys/bus/cpu/devices/cpu11/topology/thread_siblings_list:5,11 > > I know that in the past, there could be some variation between boots, > but that seems to no longer be the case. > > Just want to make sure. >> > > Thanks! > > -- > Regards, > Samuel Holland <[email protected]> >
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