aboutsummaryrefslogtreecommitdiffstats
path: root/docs/userguide/testusage.rst
blob: c55b5a2c7e325297083eb3445f9aaeaceb4a4778 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
.. This work is licensed under a Creative Commons Attribution 4.0 International License.
.. http://creativecommons.org/licenses/by/4.0
.. (c) OPNFV, Intel Corporation, AT&T and others.

vSwitchPerf test suites userguide
---------------------------------

General
^^^^^^^

VSPERF requires a traffic generators to run tests, automated traffic gen
support in VSPERF includes:

- IXIA traffic generator (IxNetwork hardware) and a machine that runs the IXIA
  client software.
- Spirent traffic generator (TestCenter hardware chassis or TestCenter virtual
  in a VM) and a VM to run the Spirent Virtual Deployment Service image,
  formerly known as "Spirent LabServer".
- Xena Network traffic generator (Xena hardware chassis) that houses the Xena
  Traffic generator modules.
- Moongen software traffic generator. Requires a separate machine running
  moongen to execute packet generation.

If you want to use another traffic generator, please select the Dummy generator
option as shown in `Traffic generator instructions
<http://artifacts.opnfv.org/vswitchperf/docs/configguide/trafficgen.html>`__

VSPERF Installation
^^^^^^^^^^^^^^^^^^^

To see the supported Operating Systems, vSwitches and system requirements,
please follow the `installation instructions
<http://artifacts.opnfv.org/vswitchperf/docs/configguide/installation.html>`__ to
install.

Traffic Generator Setup
^^^^^^^^^^^^^^^^^^^^^^^

Follow the `Traffic generator instructions
<http://artifacts.opnfv.org/vswitchperf/docs/configguide/trafficgen.html>`__ to
install and configure a suitable traffic generator.

Cloning and building src dependencies
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

In order to run VSPERF, you will need to download DPDK and OVS. You can
do this manually and build them in a preferred location, OR you could
use vswitchperf/src. The vswitchperf/src directory contains makefiles
that will allow you to clone and build the libraries that VSPERF depends
on, such as DPDK and OVS. To clone and build simply:

.. code-block:: console

    $ cd src
    $ make

VSPERF can be used with stock OVS (without DPDK support). When build
is finished, the libraries are stored in src_vanilla directory.

The 'make' builds all options in src:

* Vanilla OVS
* OVS with vhost_user as the guest access method (with DPDK support)

The vhost_user build will reside in src/ovs/
The Vanilla OVS build will reside in vswitchperf/src_vanilla

To delete a src subdirectory and its contents to allow you to re-clone simply
use:

.. code-block:: console

     $ make clobber

Configure the ``./conf/10_custom.conf`` file
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

The ``10_custom.conf`` file is the configuration file that overrides
default configurations in all the other configuration files in ``./conf``
The supplied ``10_custom.conf`` file **MUST** be modified, as it contains
configuration items for which there are no reasonable default values.

The configuration items that can be added is not limited to the initial
contents. Any configuration item mentioned in any .conf file in
``./conf`` directory can be added and that item will be overridden by
the custom configuration value.

Using a custom settings file
^^^^^^^^^^^^^^^^^^^^^^^^^^^^

If your ``10_custom.conf`` doesn't reside in the ``./conf`` directory
of if you want to use an alternative configuration file, the file can
be passed to ``vsperf`` via the ``--conf-file`` argument.

.. code-block:: console

    $ ./vsperf --conf-file <path_to_custom_conf> ...

Note that configuration passed in via the environment (``--load-env``)
or via another command line argument will override both the default and
your custom configuration files. This "priority hierarchy" can be
described like so (1 = max priority):

1. Command line arguments
2. Environment variables
3. Configuration file(s)

vloop_vnf
^^^^^^^^^

vsperf uses a VM called vloop_vnf for looping traffic in the PVP and PVVP
deployment scenarios. The image can be downloaded from
`<http://artifacts.opnfv.org/>`__.

.. code-block:: console

    $ wget http://artifacts.opnfv.org/vswitchperf/vloop-vnf-ubuntu-14.04_20151216.qcow2

Newer vloop_vnf images are available. Please reference the
installation instructions for information on these images
`installation instructions
<http://artifacts.opnfv.org/vswitchperf/docs/configguide/installation.html>`__


vloop_vnf forwards traffic through a VM using one of:
* DPDK testpmd
* Linux Bridge
* l2fwd kernel Module.

Alternatively you can use your own QEMU image.

l2fwd Kernel Module
^^^^^^^^^^^^^^^^^^^

A Kernel Module that provides OSI Layer 2 Ipv4 termination or forwarding with
support for Destination Network Address Translation (DNAT) for both the MAC and
IP addresses. l2fwd can be found in <vswitchperf_dir>/src/l2fwd

Executing tests
^^^^^^^^^^^^^^^

Before running any tests make sure you have root permissions by adding
the following line to /etc/sudoers:

.. code-block:: console

    username ALL=(ALL)       NOPASSWD: ALL

username in the example above should be replaced with a real username.

To list the available tests:

.. code-block:: console

    $ ./vsperf --list

To run a single test:

.. code-block:: console

    $ ./vsperf $TESTNAME

Where $TESTNAME is the name of the vsperf test you would like to run.

To run a group of tests, for example all tests with a name containing
'RFC2544':

.. code-block:: console

    $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf --tests="RFC2544"

To run all tests:

.. code-block:: console

    $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf

Some tests allow for configurable parameters, including test duration
(in seconds) as well as packet sizes (in bytes).

.. code:: bash

    $ ./vsperf --conf-file user_settings.py
        --tests RFC2544Tput
        --test-params "duration=10;pkt_sizes=128"

For all available options, check out the help dialog:

.. code-block:: console

    $ ./vsperf --help

Executing Vanilla OVS tests
^^^^^^^^^^^^^^^^^^^^^^^^^^^

1. If needed, recompile src for all OVS variants

.. code-block:: console

     $ cd src
     $ make distclean
     $ make

2. Update your ''10_custom.conf'' file to use the appropriate variables
for Vanilla OVS:

.. code-block:: console

   VSWITCH = 'OvsVanilla'

Where $PORT1 and $PORT2 are the Linux interfaces you'd like to bind
to the vswitch.

3. Run test:

.. code-block:: console

     $ ./vsperf --conf-file=<path_to_custom_conf>

Please note if you don't want to configure Vanilla OVS through the
configuration file, you can pass it as a CLI argument; BUT you must
set the ports.

.. code-block:: console

    $ ./vsperf --vswitch OvsVanilla


Executing PVP and PVVP tests
^^^^^^^^^^^^^^^^^^^^^^^^^^^^

To run tests using vhost-user as guest access method:

1. Set VHOST_METHOD and VNF of your settings file to:

.. code-block:: console

   VSWITCH = 'OvsDpdkVhost'
   VNF = 'QemuDpdkVhost'

2. If needed, recompile src for all OVS variants

.. code-block:: console

     $ cd src
     $ make distclean
     $ make

3. Run test:

.. code-block:: console

     $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf

Executing PVP tests using Vanilla OVS
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

To run tests using Vanilla OVS:

1. Set the following variables:

.. code-block:: console

   VSWITCH = 'OvsVanilla'
   VNF = 'QemuVirtioNet'

   VANILLA_TGEN_PORT1_IP = n.n.n.n
   VANILLA_TGEN_PORT1_MAC = nn:nn:nn:nn:nn:nn

   VANILLA_TGEN_PORT2_IP = n.n.n.n
   VANILLA_TGEN_PORT2_MAC = nn:nn:nn:nn:nn:nn

   VANILLA_BRIDGE_IP = n.n.n.n

   or use --test-param

   $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf
              --test-params "vanilla_tgen_tx_ip=n.n.n.n;
                            vanilla_tgen_tx_mac=nn:nn:nn:nn:nn:nn"


2. If needed, recompile src for all OVS variants

.. code-block:: console

     $ cd src
     $ make distclean
     $ make

3. Run test:

.. code-block:: console

     $ ./vsperf --conf-file<path_to_custom_conf>/10_custom.conf

.. _vfio-pci:

Using vfio_pci with DPDK
^^^^^^^^^^^^^^^^^^^^^^^^^

To use vfio with DPDK instead of igb_uio edit 'conf/02_vswitch.conf'
with the following parameters:

.. code-block:: console

    DPDK_MODULES = [
     ('vfio-pci'),
    ]
    SYS_MODULES = ['cuse']

**NOTE:** Please ensure that Intel VT-d is enabled in BIOS.

**NOTE:** Please ensure your boot/grub parameters include
the following:

.. code-block:: console

    iommu=pt intel_iommu=on

To check that IOMMU is enabled on your platform:

.. code-block:: console

    $ dmesg | grep IOMMU
    [    0.000000] Intel-IOMMU: enabled
    [    0.139882] dmar: IOMMU 0: reg_base_addr fbffe000 ver 1:0 cap d2078c106f0466 ecap f020de
    [    0.139888] dmar: IOMMU 1: reg_base_addr ebffc000 ver 1:0 cap d2078c106f0466 ecap f020de
    [    0.139893] IOAPIC id 2 under DRHD base  0xfbffe000 IOMMU 0
    [    0.139894] IOAPIC id 0 under DRHD base  0xebffc000 IOMMU 1
    [    0.139895] IOAPIC id 1 under DRHD base  0xebffc000 IOMMU 1
    [    3.335744] IOMMU: dmar0 using Queued invalidation
    [    3.335746] IOMMU: dmar1 using Queued invalidation
    ....

.. _SRIOV-support:

Using SRIOV support
^^^^^^^^^^^^^^^^^^^

To use virtual functions of NIC with SRIOV support, use extended form
of NIC PCI slot definition:

.. code-block:: python

    WHITELIST_NICS = ['0000:05:00.0|vf0', '0000:05:00.1|vf3']

Where 'vf' is an indication of virtual function usage and following
number defines a VF to be used. In case that VF usage is detected,
then vswitchperf will enable SRIOV support for given card and it will
detect PCI slot numbers of selected VFs.

So in example above, one VF will be configured for NIC '0000:05:00.0'
and four VFs will be configured for NIC '0000:05:00.1'. Vswitchperf
will detect PCI addresses of selected VFs and it will use them during
test execution.

At the end of vswitchperf execution, SRIOV support will be disabled.

SRIOV support is generic and it can be used in different testing scenarios.
For example:

* vSwitch tests with DPDK or without DPDK support to verify impact
  of VF usage on vSwitch performance
* tests without vSwitch, where traffic is forwared directly
  between VF interfaces by packet forwarder (e.g. testpmd application)
* tests without vSwitch, where VM accesses VF interfaces directly
  by PCI-passthrough_ to measure raw VM throughput performance.

.. _PCI-passthrough:

Using QEMU with PCI passthrough support
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Raw virtual machine throughput performance can be measured by execution of PVP
test with direct access to NICs by PCI passthrough. To execute VM with direct
access to PCI devices, enable vfio-pci_. In order to use virtual functions,
SRIOV-support_ must be enabled.

Execution of test with PCI passthrough with vswitch disabled:

.. code-block:: console

    $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf
               --vswitch none --vnf QemuPciPassthrough pvp_tput

Any of supported guest-loopback-application_ can be used inside VM with
PCI passthrough support.

Note: Qemu with PCI passthrough support can be used only with PVP test
deployment.

.. _guest-loopback-application:

Selection of loopback application for PVP and PVVP tests
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

To select loopback application, which will perform traffic forwarding
inside VM, following configuration parameter should be configured:

.. code-block:: console

     GUEST_LOOPBACK = ['testpmd', 'testpmd']

or use --test-param

.. code-block:: console

        $ ./vsperf --conf-file=<path_to_custom_conf>/10_custom.conf
              --test-params "guest_loopback=testpmd"

Supported loopback applications are:

.. code-block:: console

     'testpmd'       - testpmd from dpdk will be built and used
     'l2fwd'         - l2fwd module provided by Huawei will be built and used
     'linux_bridge'  - linux bridge will be configured
     'buildin'       - nothing will be configured by vsperf; VM image must
                       ensure traffic forwarding between its interfaces

Guest loopback application must be configured, otherwise traffic
will not be forwarded by VM and testcases with PVP and PVVP deployments
will fail. Guest loopback application is set to 'testpmd' by default.

Multi-Queue Configuration
^^^^^^^^^^^^^^^^^^^^^^^^^

VSPerf currently supports multi-queue with the following limitations:

 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.

 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 for dpdk modify the ''02_vswitch.conf'' file.

  .. code-block:: console

     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
applies by checking /sys/class/net/<eth_name>/device/numa_node and setting an
appropriate mask to create PMD threads on the same numa node.

When multi-queue is enabled, each dpdk or dpdkvhostuser port that is created
on the switch will set the option for multiple queues. If old style multi queue
has been enabled a global option for multi queue will be used instead of the
port by port option.

To enable multi-queue on the guest modify the ''04_vnf.conf'' file.

  .. code-block:: console

     GUEST_NIC_QUEUES = 2

Enabling multi-queue at the guest will add multiple queues to each NIC port when
qemu launches the guest.

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

     GUEST_TESTPMD_CPU_MASK = '-l 0,1,2,3,4'

     GUEST_TESTPMD_NB_CORES = 4
     GUEST_TESTPMD_TXQ = 2
     GUEST_TESTPMD_RXQ = 2

**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.

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
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

To select application, which will perform packet forwarding,
following configuration parameter should be configured:

  .. code-block:: console

     VSWITCH = 'none'
     PKTFWD = 'TestPMD'

     or use --vswitch and --fwdapp

     $ ./vsperf --conf-file user_settings.py
              --vswitch none
              --fwdapp TestPMD

Supported Packet Forwarding applications are:

  .. code-block:: console

     'testpmd'       - testpmd from dpdk


1. Update your ''10_custom.conf'' file to use the appropriate variables
for selected Packet Forwarder:

  .. code-block:: console

   # testpmd configuration
   TESTPMD_ARGS = []
   # packet forwarding mode supported by testpmd; Please see DPDK documentation
   # for comprehensive list of modes supported by your version.
   # e.g. io|mac|mac_retry|macswap|flowgen|rxonly|txonly|csum|icmpecho|...
   # Note: Option "mac_retry" has been changed to "mac retry" since DPDK v16.07
   TESTPMD_FWD_MODE = 'csum'
   # checksum calculation layer: ip|udp|tcp|sctp|outer-ip
   TESTPMD_CSUM_LAYER = 'ip'
   # checksum calculation place: hw (hardware) | sw (software)
   TESTPMD_CSUM_CALC = 'sw'
   # recognize tunnel headers: on|off
   TESTPMD_CSUM_PARSE_TUNNEL = 'off'

2. Run test:

  .. code-block:: console

     $ ./vsperf --conf-file <path_to_settings_py>

VSPERF modes of operation
^^^^^^^^^^^^^^^^^^^^^^^^^

VSPERF can be run in different modes. By default it will configure vSwitch,
traffic generator and VNF. However it can be used just for configuration
and execution of traffic generator. Another option is execution of all
components except traffic generator itself.

Mode of operation is driven by configuration parameter -m or --mode

.. code-block:: console

    -m MODE, --mode MODE  vsperf mode of operation;
        Values:
            "normal" - execute vSwitch, VNF and traffic generator
            "trafficgen" - execute only traffic generator
            "trafficgen-off" - execute vSwitch and VNF
            "trafficgen-pause" - execute vSwitch and VNF but wait before traffic transmission

In case, that VSPERF is executed in "trafficgen" mode, then configuration
of traffic generator should be configured through --test-params option.
Supported CLI options useful for traffic generator configuration are:

.. code-block:: console

    'traffic_type'  - One of the supported traffic types. E.g. rfc2544,
                      back2back or continuous
                      Default value is "rfc2544".
    'bidirectional' - Specifies if generated traffic will be full-duplex (true)
                      or half-duplex (false)
                      Default value is "false".
    'iload'         - Defines desired percentage of frame rate used during
                      continuous stream tests.
                      Default value is 100.
    'multistream'   - Defines number of flows simulated by traffic generator.
                      Value 0 disables MultiStream feature
                      Default value is 0.
    'stream_type'   - Stream Type is an extension of the "MultiStream" feature.
                      If MultiStream is disabled, then Stream Type will be
                      ignored. Stream Type defines ISO OSI network layer used
                      for simulation of multiple streams.
                      Default value is "L4".

Example of execution of VSPERF in "trafficgen" mode:

.. code-block:: console

    $ ./vsperf -m trafficgen --trafficgen IxNet --conf-file vsperf.conf
        --test-params "traffic_type=continuous;bidirectional=True;iload=60"

Code change verification by pylint
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

Every developer participating in VSPERF project should run
pylint before his python code is submitted for review. Project
specific configuration for pylint is available at 'pylint.rc'.

Example of manual pylint invocation:

.. code-block:: console

          $ pylint --rcfile ./pylintrc ./vsperf

GOTCHAs:
^^^^^^^^

OVS with DPDK and QEMU
~~~~~~~~~~~~~~~~~~~~~~~

If you encounter the following error: "before (last 100 chars):
'-path=/dev/hugepages,share=on: unable to map backing store for
hugepages: Cannot allocate memory\r\n\r\n" with the PVP or PVVP
deployment scenario, check the amount of hugepages on your system:

.. code-block:: console

    $ cat /proc/meminfo | grep HugePages


By default the vswitchd is launched with 1Gb of memory, to  change
this, modify --socket-mem parameter in conf/02_vswitch.conf to allocate
an appropriate amount of memory:

.. code-block:: console

    VSWITCHD_DPDK_ARGS = ['-c', '0x4', '-n', '4', '--socket-mem 1024,0']
    VSWITCHD_DPDK_CONFIG = {
        'dpdk-init' : 'true',
        'dpdk-lcore-mask' : '0x4',
        'dpdk-socket-mem' : '1024,0',
    }

Note: Option VSWITCHD_DPDK_ARGS is used for vswitchd, which supports --dpdk
parameter. In recent vswitchd versions, option VSWITCHD_DPDK_CONFIG will be
used to configure vswitchd via ovs-vsctl calls.


More information
^^^^^^^^^^^^^^^^

For more information and details refer to the vSwitchPerf user guide at:
http://artifacts.opnfv.org/vswitchperf/docs/userguide/index.html