diff options
Diffstat (limited to 'docs/userguide')
| -rwxr-xr-x | docs/userguide/testusage.rst | 51 |
1 files changed, 32 insertions, 19 deletions
diff --git a/docs/userguide/testusage.rst b/docs/userguide/testusage.rst index 9eeddc27..c55b5a2c 100755 --- a/docs/userguide/testusage.rst +++ b/docs/userguide/testusage.rst @@ -427,30 +427,25 @@ Multi-Queue Configuration VSPerf currently supports multi-queue with the following limitations: - 1. Execution of pvp/pvvp tests require testpmd as the loopback if multi-queue - is enabled at the guest. - - 2. Requires QemuDpdkVhostUser as the vnf. - - 3. Requires switch to be set to OvsDpdkVhost. - - 4. Requires QEMU 2.5 or greater and any OVS version higher than 2.5. The - default upstream package versions installed by VSPerf satisfy this + 1. Requires QEMU 2.5 or greater and any OVS version higher than 2.5. The + default upstream package versions installed by VSPerf satisfies this requirement. - 5. If using OVS versions 2.5.0 or less enable old style multi-queue as shown in - the ''02_vswitch.conf'' file. + 2. Guest image must have ethtool utility installed if using l2fwd or linux + bridge inside guest for loopback. + + 3. If using OVS versions 2.5.0 or less enable old style multi-queue as shown + in the ''02_vswitch.conf'' file. .. code-block:: console OVS_OLD_STYLE_MQ = True -To enable multi-queue modify the ''02_vswitch.conf'' file to enable multi-queue -on the switch. +To enable multi-queue for dpdk modify the ''02_vswitch.conf'' file. .. code-block:: console - VSWITCH_MULTI_QUEUES = 2 + VSWITCH_DPDK_MULTI_QUEUES = 2 **NOTE:** you should consider using the switch affinity to set a pmd cpu mask that can optimize your performance. Consider the numa of the NIC in use if this @@ -471,8 +466,12 @@ To enable multi-queue on the guest modify the ''04_vnf.conf'' file. Enabling multi-queue at the guest will add multiple queues to each NIC port when qemu launches the guest. -Testpmd should be configured to take advantage of multi-queue on the guest. This -can be done by modifying the ''04_vnf.conf'' file. +In case of Vanilla OVS, multi-queue is enabled on the tuntap ports and nic +queues will be enabled inside the guest with ethtool. Simply enabling the +multi-queue on the guest is sufficient for Vanilla OVS multi-queue. + +Testpmd should be configured to take advantage of multi-queue on the guest if +using DPDKVhostUser. This can be done by modifying the ''04_vnf.conf'' file. .. code-block:: console @@ -485,9 +484,23 @@ can be done by modifying the ''04_vnf.conf'' file. **NOTE:** The guest SMP cores must be configured to allow for testpmd to use the optimal number of cores to take advantage of the multiple guest queues. -**NOTE:** For optimal performance guest SMPs should be on the same numa as the -NIC in use if possible/applicable. Testpmd should be assigned at least -(nb_cores +1) total cores with the cpu mask. +In case of using Vanilla OVS and qemu virtio-net you can increase performance +by binding vhost-net threads to cpus. This can be done by enabling the affinity +in the ''04_vnf.conf'' file. This can be done to non multi-queue enabled +configurations as well as there will be 2 vhost-net threads. + + .. code-block:: console + + VSWITCH_VHOST_NET_AFFINITIZATION = True + + VSWITCH_VHOST_CPU_MAP = [4,5,8,11] + +**NOTE:** This method of binding would require a custom script in a real +environment. + +**NOTE:** For optimal performance guest SMPs and/or vhost-net threads should be +on the same numa as the NIC in use if possible/applicable. Testpmd should be +assigned at least (nb_cores +1) total cores with the cpu mask. Executing Packet Forwarding tests ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |