Currently there are restrictions regarding the use of the XL710 network
interface with OVS and DPDK. This patch details those restrictions in
INSTALL.DPDK.md.
Signed-off-by: Ian Stokes <ian.sto...@intel.com>
---
INSTALL.DPDK.md | 13 +++++++++++++
1 files changed, 13 insertions(+), 0 deletions(-)
diff --git a/INSTALL.DPDK.md b/INSTALL.DPDK.md
index 8563c40..35dd9a0 100644
--- a/INSTALL.DPDK.md
+++ b/INSTALL.DPDK.md
@@ -720,6 +720,19 @@ Restrictions:
want to share dpdkr rings with other processes on the host, you can do
this with smaller page sizes.
+ Platform and Network Interface:
+ - Currently it is not possible to use an Intel XL710 Network Interface as a
+ DPDK port type on a platform with more than 64 logical cores. This is
+ related to how DPDK reports the number of TX queues that may be used by
+ a DPDK application with an XL710. The maximum number of TX queues supported
+ by a DPDK application for an XL710 is 64. If a user attempts to add an
+ XL710 interface as a DPDK port type to a system as described above the
+ port addition will fail as OVS will attempt to initialize a TX queue
greater
+ than 64. This issue is expected to be resolved in a future DPDK release.
+ As a workaround a user can disable hyper-threading to reduce the overall
+ core count of the system to be less than or equal to 64 when using an XL710
+ interface with DPDK.
+
Bug Reporting:
--------------
--
1.7.4.1
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