[dpdk-dev] [PATCH v2] doc: improve lstopo tip
Thomas Monjalon
thomas at monjalon.net
Fri May 21 11:06:16 CEST 2021
The tool lstopo from hwloc package can provide a graphical
or textual view.
In its textual form, the option --merge gives a shorter summary
which fits well with the DPDK need.
Signed-off-by: Thomas Monjalon <thomas at monjalon.net>
---
v2: add textual output in Linux guide
---
doc/guides/linux_gsg/build_sample_apps.rst | 13 +++++++++----
doc/guides/nics/mlx4.rst | 2 +-
doc/guides/nics/mlx5.rst | 2 +-
3 files changed, 11 insertions(+), 6 deletions(-)
diff --git a/doc/guides/linux_gsg/build_sample_apps.rst b/doc/guides/linux_gsg/build_sample_apps.rst
index 78652549a7..709b301427 100644
--- a/doc/guides/linux_gsg/build_sample_apps.rst
+++ b/doc/guides/linux_gsg/build_sample_apps.rst
@@ -138,11 +138,16 @@ This can be useful when using other processors to understand the mapping of the
.. note::
- A more graphical view of the logical core layout may be obtained using the ``lstopo`` Linux utility.
- On Fedora Linux, this may be installed and run using the following command::
+ A more graphical view of the logical core layout
+ may be obtained using the ``lstopo`` Linux utility.
+ On Fedora, this may be installed and run using the following commands::
- sudo yum install hwloc
- ./lstopo
+ sudo yum install hwloc
+ lstopo
+
+ This command produces a quite short textual output::
+
+ lstopo-no-graphics --merge
.. warning::
diff --git a/doc/guides/nics/mlx4.rst b/doc/guides/nics/mlx4.rst
index 9742ddb268..a25add7c47 100644
--- a/doc/guides/nics/mlx4.rst
+++ b/doc/guides/nics/mlx4.rst
@@ -308,7 +308,7 @@ Performance tuning
for better performance. For VMs, verify that the right CPU
and NUMA node are pinned according to the above. Run::
- lstopo-no-graphics
+ lstopo-no-graphics --merge
to identify the NUMA node to which the PCIe adapter is connected.
diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst
index 220c6e505a..83299646dd 100644
--- a/doc/guides/nics/mlx5.rst
+++ b/doc/guides/nics/mlx5.rst
@@ -1496,7 +1496,7 @@ Performance tuning
for better performance. For VMs, verify that the right CPU
and NUMA node are pinned according to the above. Run::
- lstopo-no-graphics
+ lstopo-no-graphics --merge
to identify the NUMA node to which the PCIe adapter is connected.
--
2.31.1
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