Retries on vHost User port are disabled by default and can be enabled by setting 'vhost-enqueue-retry' to a value less than or equal to 8.
Signed-off-by: Bhanuprakash Bodireddy <bhanuprakash.bodire...@intel.com> Signed-off-by: Antonio Fischetti <antonio.fische...@intel.com> Co-authored-by: Antonio Fischetti <antonio.fische...@intel.com> --- Documentation/howto/dpdk.rst | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/Documentation/howto/dpdk.rst b/Documentation/howto/dpdk.rst index f3c7aff..0324d10 100644 --- a/Documentation/howto/dpdk.rst +++ b/Documentation/howto/dpdk.rst @@ -407,6 +407,23 @@ For certain traffic profiles with many parallel flows, it's recommended to set For more information on the EMC refer to :doc:`/intro/install/dpdk` . +.. _dpdk-vhost-retries: + +vHost User port Retries +----------------------- + +By default no retries are performed when few of the packets aren't successfully +transmitted on previous attempt. Retries are disabled to lessen throughput impact +in cases where multiple vHost User ports are serviced by the same PMD thread. + +In cases where a particular OvS-DPDK deployment expects no/minimal packet loss, +retries can be enabled to re-enqueue the unsuccessful packets in previous attempt. +A maximum of 8 retries are allowed. + +For example to perform 3 retries:: + + $ ovs-vsctl --no-wait set Open_vSwitch . other_config:vhost-enque-retry=3 + .. _dpdk-ovs-in-guest: OVS with DPDK Inside VMs -- 2.4.11 _______________________________________________ dev mailing list d...@openvswitch.org https://mail.openvswitch.org/mailman/listinfo/ovs-dev
