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| -rwxr-xr-x | docs/userguide/testusage.rst | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/docs/userguide/testusage.rst b/docs/userguide/testusage.rst index 46413f03..adbe603b 100755 --- a/docs/userguide/testusage.rst +++ b/docs/userguide/testusage.rst @@ -487,6 +487,31 @@ multiple VM NIC pairs. **NOTE:** In case of linux_bridge, all guest NICs are connected to the same bridge inside the guest. +Mergable Buffers Options with QEMU +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +Mergable buffers can be disabled with VSPerf within QEMU. This option can +increase performance significantly when not using jumbo frame sized packets. +By default VSPerf disables mergable buffers. If you wish to enable it you +can modify the setting in the a custom conf file. + +.. code-block:: python + + GUEST_NIC_MERGE_BUFFERS_DISABLE = [False] + +Then execute using the custom conf file. + +.. code-block:: console + + $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf + +Alternatively you can just pass the param during execution. + +.. code-block:: console + + $ ./vsperf --test-params "GUEST_NIC_MERGE_BUFFERS_DISABLE=[False]" + + Selection of dpdk binding driver for tests with VMs ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -716,6 +741,19 @@ Example of manual pylint invocation: GOTCHAs: ^^^^^^^^ +Custom image fails to boot +~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Using custom VM images may not boot within VSPerf pxp testing because of +the drive boot and shared type which could be caused by a missing scsi +driver inside the image. In case of issues you can try changing the drive +boot type to ide. + +.. code-block:: python + + GUEST_BOOT_DRIVE_TYPE = ['ide'] + GUEST_SHARED_DRIVE_TYPE = ['ide'] + OVS with DPDK and QEMU ~~~~~~~~~~~~~~~~~~~~~~~ |