[dpdk-dev] [PATCH] doc: add limitation for L3fwd-power app
Pablo de Lara
pablo.de.lara.guarch at intel.com
Fri Nov 4 13:48:17 CET 2016
L3fwd-power app needs vector mode to be disabled in order to work
properly. The app used to work previously, because it was using
Rx scalar function, but now it uses vector function.
Vector mode needs to be disabled to make the app works,
which has been documented in release notes.
Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com>
doc/guides/rel_notes/release_16_11.rst | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/doc/guides/rel_notes/release_16_11.rst b/doc/guides/rel_notes/release_16_11.rst
index aa0c09a..cb4ec97 100644
@@ -178,6 +178,17 @@ Known Issues
This section is a comment. Make sure to start the actual text at the margin.
+* **L3fwd-power app does not work properly when Rx vector is enabled.**
+ Using some drivers with vector enabled, makes L3fwd-power app not work
+ properly, since the queue monitoring works differently when using
+ scalar compared to vector, making the frequency scaling not to work correctly.
+ In addition, L3fwd-power requires the mbuf to have correct packet type,
+ but in some drivers, the vector mode must be disabled for this.
+ Therefore, in order to use L3fwd-power, vector mode should be disabled
+ from the config file.
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