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From: David Christensen <drc@linux.vnet.ibm.com>
To: dev@dpdk.org, stephen@networkplumber.org
Cc: David Christensen <drc@linux.vnet.ibm.com>
Date: Wed, 2 Dec 2020 12:57:56 -0800
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Subject: [dpdk-dev] [PATCH v2] usertools: show hugepages on POWER systems
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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 <drc@linux.vnet.ibm.com>
---
v2:
- reduce indentation and use continue to skip non-existent paths
---
usertools/dpdk-hugepages.py | 2 ++
1 file changed, 2 insertions(+)
diff --git a/usertools/dpdk-hugepages.py b/usertools/dpdk-hugepages.py
index 1be100ca3..4b6401dc2 100755
--- a/usertools/dpdk-hugepages.py
+++ b/usertools/dpdk-hugepages.py
@@ -70,6 +70,8 @@ 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'
+ if not os.path.exists(path):
+ continue
for hdir in os.listdir(path):
pages = get_hugepages(path + '/' + hdir)
if pages > 0:
--
2.27.0