[Bug 1419503] [NEW] [SRU] lscpu reports incorrect number of NUMA nodes on systems with discontinuous NUMA nodes

Launchpad Bug Tracker 1419503 at bugs.launchpad.net
Sun Feb 8 21:49:52 UTC 2015


You have been subscribed to a public bug by Matt Ezell (ezellma):

[Impact]
Running 'lscpu' on a system with discontinuous NUMA nodes (such as some IBM Power 8 hardware) will only display the continuous NUMA nodes.  Users may be confused due to incorrect information.

[Test Case]
On a system with discontinuous NUMA nodes, just run the lscpu command
# ls -d /sys/devices/system/node/node*
/sys/devices/system/node/node0  /sys/devices/system/node/node1  /sys/devices/system/node/node16  /sys/devices/system/node/node17
# lscpu|grep NUMA
NUMA node(s):          2
NUMA node0 CPU(s):     0-39
NUMA node1 CPU(s):     40-79

[Regression Potential]
Since this is an informational command, anything relying on its output may experience new behavior.


This affects Trusty, but Utopic and Vivid are based on newer upstream
releases that don't include this error.

** Affects: util-linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
[SRU] lscpu reports incorrect number of NUMA nodes on systems with discontinuous NUMA nodes
https://bugs.launchpad.net/bugs/1419503
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