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-.. This work is licensed under a Creative Commons Attribution 4.0 International License.
-.. http://creativecommons.org/licenses/by/4.0
-
-=============================================
-Low Latency Feature Configuration Description
-=============================================
-
-Introduction
-------------
-In KVM4NFV project, we focus on the KVM hypervisor to enhance it for NFV, by
-looking at the following areas initially
-
-* Minimal Interrupt latency variation for data plane VNFs:
-   * Minimal Timing Variation for Timing correctness of real-time VNFs
-   * Minimal packet latency variation for data-plane VNFs
-* Inter-VM communication,
-* Fast live migration
-
-Configuration of Cyclictest
----------------------------
-
-Cyclictest measures Latency of response to a stimulus. Achieving low latency
-with the KVM4NFV project requires setting up a special test environment.
-This environment includes the BIOS settings, kernel configuration, kernel
-parameters and the run-time environment.
-
-* For more information regarding the test environment, please visit
-  https://wiki.opnfv.org/display/kvm/KVM4NFV+Test++Environment
-  https://wiki.opnfv.org/display/kvm/Nfv-kvm-tuning
-
-Pre-configuration activities
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-Intel POD10 is currently used as OPNFV-KVM4NFV test environment. The rpm
-packages from the latest build are downloaded onto Intel-Pod10 jump server
-from artifact repository. Yardstick running in a ubuntu docker container
-on Intel Pod10-jump server will configure the host(intel pod10 node1/node2
-based on job type), the guest and triggers the cyclictest on the guest using
-below sample yaml file.
-
-
-.. code:: bash
-
-    For IDLE-IDLE test,
-
-    host_setup_seqs:
-    - "host-setup0.sh"
-    - "reboot"
-    - "host-setup1.sh"
-    - "host-run-qemu.sh"
-
-    guest_setup_seqs:
-    - "guest-setup0.sh"
-    - "reboot"
-    - "guest-setup1.sh"
-
-.. figure:: images/idle-idle-test.png
-   :name: idle-idle-test
-   :width: 100%
-   :align: center
-
-.. code:: bash
-
-    For [CPU/Memory/IO]Stress-IDLE tests,
-
-    host_setup_seqs:
-    - "host-setup0.sh"
-    - "reboot"
-    - "host-setup1.sh"
-    - "stress_daily.sh" [cpustress/memory/io]
-    - "host-run-qemu.sh"
-
-    guest_setup_seqs:
-    - "guest-setup0.sh"
-    - "reboot"
-    - "guest-setup1.sh"
-
-.. figure:: images/stress-idle-test.png
-   :name: stress-idle-test
-   :width: 100%
-   :align: center
-
-The following scripts are used for configuring host and guest to create a
-special test environment and achieve low latency.
-
-Note: host-setup0.sh, host-setup1.sh and host-run-qemu.sh are run on the host,
-followed by guest-setup0.sh and guest-setup1.sh scripts on the guest VM.
-
-**host-setup0.sh**: Running this script will install the latest kernel rpm
-on host and will make necessary changes as following to create special test
-environment.
-
-   * Isolates CPUs from the general scheduler
-   * Stops timer ticks on isolated CPUs whenever possible
-   * Stops RCU callbacks on isolated CPUs
-   * Enables intel iommu driver and disables DMA translation for devices
-   * Sets HugeTLB pages to 1GB
-   * Disables machine check
-   * Disables clocksource verification at runtime
-
-**host-setup1.sh**: Running this script will make the following test
-environment changes.
-
-   * Disabling watchdogs to reduce overhead
-   * Disabling RT throttling
-   * Reroute interrupts bound to isolated CPUs to CPU 0
-   * Change the iptable so that we can ssh to the guest remotely
-
-**stress_daily.sh**: Scripts gets triggered only for stress-idle tests. Running this script
-make the following environment changes.
-
-   * Triggers stress_script.sh, which runs the stress command with necessary options
-   * CPU,Memory or IO stress can be applied based on the test type
-   * Applying stress only on the Host is handled in D-Release
-   * For Idle-Idle test the stress script is not triggered
-   * Stress is applied only on the free cores to prevent load on qemu process
-
-   **Note:**
-    - On Numa Node 1: 22,23 cores are allocated for QEMU process
-    - 24-43 are used for applying stress
-
-**host-run-qemu.sh**: Running this script will launch a guest vm on the host.
-     Note: download guest disk image from artifactory.
-
-**guest-setup0.sh**: Running this scrcipt on the guest vm will install the
-latest build kernel rpm, cyclictest and make the following configuration on
-guest vm.
-
-   * Isolates CPUs from the general scheduler
-   * Stops timer ticks on isolated CPUs whenever possible
-   * Uses polling idle loop to improve performance
-   * Disables clocksource verification at runtime
-
-**guest-setup1.sh**: Running this script on guest vm will do the following
-configurations.
-
-   * Disable watchdogs to reduce overhead
-   * Routes device interrupts to non-RT CPU
-   * Disables RT throttling
-
-Hardware configuration
-~~~~~~~~~~~~~~~~~~~~~~
-
-Currently Intel POD10 is used as test environment for kvm4nfv to execute
-cyclictest. As part of this test environment Intel pod10-jump is configured as
-jenkins slave and all the latest build artifacts are downloaded on to it.
-
-* For more information regarding hardware configuration, please visit
-  https://wiki.opnfv.org/display/pharos/Intel+Pod10
-  https://build.opnfv.org/ci/computer/intel-pod10/
-  http://artifacts.opnfv.org/octopus/brahmaputra/docs/octopus_docs/opnfv-jenkins-slave-connection.html