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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-18 11:07:48 -0700
committerYunhong Jiang <yunhong.jiang@linux.intel.com>2016-07-21 17:48:26 -0700
commitef4e798bc8761c401451649ed17a52e3e1c638e8 (patch)
tree84993bd865ba6e65be526af0259ca25f33c9d662 /kernel/drivers/media/i2c/tda9840.c
parentc715b6029fd5b4eaf323f5efde4ec5db5ba0a9b4 (diff)
Add the "timers: do not raise softirq unconditionally" temporarily
This patch enable the nohz_full and is important for RT. Bring it back temporarily, while waiting for more work on RT community. Please refer to https://lkml.org/lkml/2015/3/17/783 for more information of the revert. A little rebase needed because it's reverted on old code base. Please notice that we change the rt_mutex_trylock() so that we can get the tvec_base lock there. This is sure to be wrong, and should be fixed cleanly. And that's the major reason the original patch are reverted on the upstream RT linux. Will discuss with upstream on how to achieve the solution. Upstream status: pending Change-Id: I2747e087faf4145b69b800a60b8d9414bc71e206 Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Diffstat (limited to 'kernel/drivers/media/i2c/tda9840.c')
0 files changed, 0 insertions, 0 deletions
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.. This work is licensed under a Creative Commons Attribution 4.0 International
.. License.
.. http://creativecommons.org/licenses/by/4.0
.. (c) OPNFV, Huawei Technologies Co.,Ltd and others.

*************************************
Yardstick Test Case Description TC070
*************************************

.. _cirros: https://download.cirros-cloud.net
.. _pktgen: https://www.kernel.org/doc/Documentation/networking/pktgen.txt
.. _free: http://manpages.ubuntu.com/manpages/trusty/en/man1/free.1.html

+-----------------------------------------------------------------------------+
|Latency, Memory Utilization, Throughput, Packet Loss                         |
|                                                                             |
+--------------+--------------------------------------------------------------+
|test case id  | OPNFV_YARDSTICK_TC070_Latency, Memory Utilization,           |
|              | Throughput,Packet Loss                                       |
|              |                                                              |
+--------------+--------------------------------------------------------------+
|metric        | Number of flows, latency, throughput, Memory Utilization,    |
|              | packet loss                                                  |
|              |                                                              |
+--------------+--------------------------------------------------------------+
|test purpose  | To evaluate the IaaS network performance with regards to     |
|              | flows and throughput, such as if and how different amounts   |
|              | of flows matter for the throughput between hosts on different|
|              | compute blades. Typically e.g. the performance of a vSwitch  |
|              | depends on the number of flows running through it. Also      |
|              | performance of other equipment or entities can depend        |
|              | on the number of flows or the packet sizes used.             |
|              | The purpose is also to be able to spot trends.               |
|              | Test results, graphs and similar shall be stored for         |
|              | comparison reasons and product evolution understanding       |
|              | between different OPNFV versions and/or configurations.      |
|              |                                                              |
+--------------+--------------------------------------------------------------+
|configuration | file: opnfv_yardstick_tc070.yaml                             |
|              |                                                              |
|              | Packet size: 64 bytes                                        |
|              | Number of ports: 1, 10, 50, 100, 300, 500, 750 and 1000.     |
|              | The amount configured ports map from 2 up to 1001000 flows,  |
|              | respectively. Each port amount is run two times, for 20      |
|              | seconds each. Then the next port_amount is run, and so on.   |
|              | During the test Memory Utilization on both client and server,|
|              | and the network latency between the client and server are    |
|              | measured.                                                    |
|              | The client and server are distributed on different HW.       |
|              | For SLA max_ppm is set to 1000.                              |
|              |                                                              |
+--------------+--------------------------------------------------------------+
|test tool     | pktgen                                                       |
|              |                                                              |
|              | Pktgen is not always part of a Linux distribution, hence it  |
|              | needs to be installed. It is part of the Yardstick Glance    |
|              | image.                                                       |
|              | (As an example see the /yardstick/tools/ directory for how   |
|              | to generate a Linux image with pktgen included.)             |
|              |                                                              |
|              | ping                                                         |
|              |                                                              |
|              | Ping is normally part of any Linux distribution, hence it    |
|              | doesn't need to be installed. It is also part of the         |
|              | Yardstick Glance image.                                      |
|              | (For example also a cirros_ image can be downloaded, it      |
|              | includes ping)                                               |
|              |                                                              |
|              | free                                                         |
|              |                                                              |
|              | free provides information about unused and used memory and   |
|              | swap space on any computer running Linux or another Unix-like|
|              | operating system.                                            |
|              | free is normally part of a Linux distribution, hence it      |
|              | doesn't needs to be installed.                               |
|              |                                                              |
+--------------+--------------------------------------------------------------+
|references    | Ping and free man pages                                      |
|              |                                                              |
|              | pktgen_                                                      |
|              |                                                              |
|              | ETSI-NFV-TST001                                              |
|              |                                                              |
+--------------+--------------------------------------------------------------+
|applicability | Test can be configured with different packet sizes, amount   |
|              | of flows and test duration. Default values exist.            |
|              |                                                              |
|              | SLA (optional): max_ppm: The number of packets per million   |
|              | packets sent that are acceptable to lose, not received.      |
|              |                                                              |
+--------------+--------------------------------------------------------------+
|pre-test      | The test case image needs to be installed into Glance        |
|conditions    | with pktgen included in it.                                  |
|              |                                                              |
|              | No POD specific requirements have been identified.           |
|              |                                                              |
+--------------+--------------------------------------------------------------+
|test sequence | description and expected result                              |
|              |                                                              |
+--------------+--------------------------------------------------------------+
|step 1        | The hosts are installed, as server and client. pktgen is     |
|              | invoked and logs are produced and stored.                    |
|              |                                                              |
|              | Result: Logs are stored.                                     |
|              |                                                              |
+--------------+--------------------------------------------------------------+
|test verdict  | Fails only if SLA is not passed, or if there is a test case  |
|              | execution problem.                                           |
|              |                                                              |
+--------------+--------------------------------------------------------------+