4 System provisioning is done by combination of PXE boot unattented
6 `Ansible <https://www.ansible.com>`_ described in `CSIT Testbed Setup`_.
8 Below a subset of the running configuration:
10 1. Xeon Haswell - Ubuntu 18.04.1 LTS
15 No LSB modules are available.
16 Distributor ID: Ubuntu
17 Description: Ubuntu 18.04.1 LTS
22 2. Xeon Skylake - Ubuntu 18.04 LTS
27 No LSB modules are available.
28 Distributor ID: Ubuntu
29 Description: Ubuntu 18.04 LTS
36 - **isolcpus=<cpu number>-<cpu number>** used for all cpu cores apart from
37 first core of each socket used for running VPP worker threads and Qemu/LXC
39 https://www.kernel.org/doc/Documentation/admin-guide/kernel-parameters.txt
40 - **intel_pstate=disable** - [X86] Do not enable intel_pstate as the default
41 scaling driver for the supported processors. Intel P-State driver decide what
42 P-state (CPU core power state) to use based on requesting policy from the
43 cpufreq core. [X86 - Either 32-bit or 64-bit x86]
44 https://www.kernel.org/doc/Documentation/cpu-freq/intel-pstate.txt
45 - **nohz_full=<cpu number>-<cpu number>** - [KNL,BOOT] In kernels built with
46 CONFIG_NO_HZ_FULL=y, set the specified list of CPUs whose tick will be stopped
47 whenever possible. The boot CPU will be forced outside the range to maintain
48 the timekeeping. The CPUs in this range must also be included in the
49 rcu_nocbs= set. Specifies the adaptive-ticks CPU cores, causing kernel to
50 avoid sending scheduling-clock interrupts to listed cores as long as they have
51 a single runnable task. [KNL - Is a kernel start-up parameter, SMP - The
52 kernel is an SMP kernel].
53 https://www.kernel.org/doc/Documentation/timers/NO_HZ.txt
54 - **rcu_nocbs** - [KNL] In kernels built with CONFIG_RCU_NOCB_CPU=y, set the
55 specified list of CPUs to be no-callback CPUs, that never queue RCU callbacks
57 https://www.kernel.org/doc/Documentation/admin-guide/kernel-parameters.txt
58 - **numa_balancing=disable** - [KNL,X86] Disable automatic NUMA balancing.
59 - **intel_iommu=enable** - [DMAR] Enable Intel IOMMU driver (DMAR) option.
60 - **iommu=on, iommu=pt** - [x86, IA-64] Disable IOMMU bypass, using IOMMU for
62 - **nmi_watchdog=0** - [KNL,BUGS=X86] Debugging features for SMP kernels. Turn
63 hardlockup detector in nmi_watchdog off.
64 - **nosoftlockup** - [KNL] Disable the soft-lockup detector.
65 - **tsc=reliable** - Disable clocksource stability checks for TSC.
66 [x86] reliable: mark tsc clocksource as reliable, this disables clocksource
67 verification at runtime, as well as the stability checks done at bootup.
68 Used to enable high-resolution timer mode on older hardware, and in
69 virtualized environment.
70 - **hpet=disable** - [X86-32,HPET] Disable HPET and use PIT instead.
72 Hugepages Configuration
73 ~~~~~~~~~~~~~~~~~~~~~~~
75 Huge pages are namaged via sysctl configuration located in
76 `/etc/sysctl.d/90-csit.conf` on each testbed. Default huge page size is 2M.
77 The exact amount of huge pages depends on testbed. All the values are defined
78 in `Ansible inventory - hosts` files.
84 1. Xeon Haswell - Ubuntu 18.04.1 LTS
89 BOOT_IMAGE=/vmlinuz-4.15.0-36-generic root=UUID=5d2ecc97-245b-4e94-b0ae-c3548567de19 ro isolcpus=1-17,19-35 nohz_full=1-17,19-35 rcu_nocbs=1-17,19-35 numa_balancing=disable intel_pstate=disable intel_iommu=on iommu=pt nmi_watchdog=0 audit=0 nosoftlockup processor.max_cstate=1 intel_idle.max_cstate=1 hpet=disable tsc=reliable mce=off console=tty0 console=ttyS0,115200n8
91 2. Xeon Skylake - Ubuntu 18.04 LTS
96 BOOT_IMAGE=/vmlinuz-4.15.0-23-generic root=UUID=3fa246fd-1b80-4361-bb90-f339a6bbed51 ro isolcpus=1-27,29-55,57-83,85-111 nohz_full=1-27,29-55,57-83,85-111 rcu_nocbs=1-27,29-55,57-83,85-111 numa_balancing=disable intel_pstate=disable intel_iommu=on iommu=pt nmi_watchdog=0 audit=0 nosoftlockup processor.max_cstate=1 intel_idle.max_cstate=1 hpet=disable tsc=reliable mce=off console=tty0 console=ttyS0,115200n8