The IBM PowerNV systems include NUMA nodes that don't have associated
CPUs or hugepage memory. Here is an example on an IBM AC922 system:
$ lscpu
...
NUMA node0 CPU(s): 0-63
NUMA node8 CPU(s): 64-127
NUMA node252 CPU(s):
...
$ numastat -m
...
Node 0 Node 8 Node 252
--------------- --------------- ---------------
MemTotal 126763.19 130785.06 0.00
MemFree 119513.38 125294.44 0.00
MemUsed 7249.81 5490.62 0.00
...
HugePages_Total 4.00 1734.00 0.00
HugePages_Free 0.00 4.00 0.00
HugePages_Surp 4.00 1730.00 0.00
...
Modify dpdk-hugepages.py to test for the ../hugepages directory before
attempting to parse the hugepage entries.
Signed-off-by: David Christensen <d...@linux.vnet.ibm.com>
---
usertools/dpdk-hugepages.py | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/usertools/dpdk-hugepages.py b/usertools/dpdk-hugepages.py
index 1be100ca3..89945f187 100755
--- a/usertools/dpdk-hugepages.py
+++ b/usertools/dpdk-hugepages.py
@@ -70,13 +70,14 @@ def show_numa_pages():
for numa_path in glob.glob('/sys/devices/system/node/node*'):
node = numa_path[29:] # slice after /sys/devices/system/node/node
path = numa_path + '/hugepages'
- for hdir in os.listdir(path):
- pages = get_hugepages(path + '/' + hdir)
- if pages > 0:
- kb = int(hdir[10:-2]) # slice out of hugepages-NNNkB
- print('{:<4} {:<5} {:<6} {}'.format(node, pages,
- fmt_memsize(kb),
- fmt_memsize(pages * kb)))
+ if os.path.exists(path):
+ for hdir in os.listdir(path):
+ pages = get_hugepages(path + '/' + hdir)
+ if pages > 0:
+ kb = int(hdir[10:-2]) # slice out of hugepages-NNNkB
+ print('{:<4} {:<5} {:<6} {}'.format(node, pages,
+ fmt_memsize(kb),
+ fmt_memsize(pages *
kb)))
def show_non_numa_pages():
--
2.27.0
