X-Git-Url: https://gerrit.fd.io/r/gitweb?p=csit.git;a=blobdiff_plain;f=resources%2Ftools%2Ftestbed-setup%2Fansible%2Froles%2Fperformance_tuning%2Ftasks%2Fmain.yaml;fp=resources%2Ftools%2Ftestbed-setup%2Fansible%2Froles%2Fperformance_tuning%2Ftasks%2Fmain.yaml;h=e28f9ba6a27965ad31c35a03020ca06973e79317;hp=0000000000000000000000000000000000000000;hb=048a9ca3484a06e54f48dc80e7ab24dbfebe406f;hpb=d7aec8ee052468f55e2e9bd27de1dedd918c8a37 diff --git a/resources/tools/testbed-setup/ansible/roles/performance_tuning/tasks/main.yaml b/resources/tools/testbed-setup/ansible/roles/performance_tuning/tasks/main.yaml new file mode 100644 index 0000000000..e28f9ba6a2 --- /dev/null +++ b/resources/tools/testbed-setup/ansible/roles/performance_tuning/tasks/main.yaml @@ -0,0 +1,168 @@ +--- +# file: roles/performance_tuning/tasks/main.yaml + +- name: Performance Tuning - Install Distribution - Release - Machine Prerequisites + package: + name: "{{ packages | flatten(levels=1) }}" + state: latest + update_cache: true + tags: + - install-dependencies + +- name: Performance Tuning - Configure {{ ansible_machine }} Kernel Parameters + lineinfile: + path: "/etc/default/grub" + state: "present" + regexp: "^GRUB_CMDLINE_LINUX=" + line: "{{ grub_cmdline_linux[ansible_machine] | join() }}" + notify: + - "Update GRUB" + - "Reboot server" + tags: + - set-grub + +- name: Performance Tuning - Turbo Boost + import_tasks: turbo_boost.yaml + when: > + cpu_microarchitecture == "skylake" or + cpu_microarchitecture == "cascadelake" + tags: + - turbo-boost + +- name: Performance Tuning - Adjust nr_hugepages + # change the minimum size of the hugepage pool. + # 2G VPP, 4GB per VNF/CNF, 2G reserve + sysctl: + name: "vm.nr_hugepages" + value: "{{ sysctl.vm.nr_hugepages }}" + state: "present" + sysctl_file: "/etc/sysctl.d/90-csit.conf" + reload: "yes" + tags: + - set-sysctl + +- name: Performance Tuning - Adjust max_map_count + # this file contains the maximum number of memory map areas a process + # may have. memory map areas are used as a side-effect of calling + # malloc, directly by mmap and mprotect, and also when loading shared + # libraries. + # + # while most applications need less than a thousand maps, certain + # programs, particularly malloc debuggers, may consume lots of them, + # e.g., up to one or two maps per allocation. + # must be greater than or equal to (2 * vm.nr_hugepages). + sysctl: + name: "vm.max_map_count" + value: "{{ sysctl.vm.nr_hugepages * 4 }}" + state: "present" + sysctl_file: "/etc/sysctl.d/90-csit.conf" + reload: "yes" + tags: + - set-sysctl + +- name: Performance Tuning - Adjust hugetlb_shm_group + # hugetlb_shm_group contains group id that is allowed to create sysv + # shared memory segment using hugetlb page. + sysctl: + name: "vm.hugetlb_shm_group" + value: "1000" + state: "present" + sysctl_file: "/etc/sysctl.d/90-csit.conf" + reload: "yes" + tags: + - set-sysctl + +- name: Performance Tuning - Adjust swappiness + # this control is used to define how aggressive the kernel will swap + # memory pages. higher values will increase agressiveness, lower values + # decrease the amount of swap. a value of 0 instructs the kernel not to + # initiate swap until the amount of free and file-backed pages is less + # than the high water mark in a zone. + sysctl: + name: "vm.swappiness" + value: "0" + state: "present" + sysctl_file: "/etc/sysctl.d/90-csit.conf" + reload: "yes" + tags: + - set-sysctl + +- name: Performance Tuning - Adjust shmmax + # shared memory max must be greator or equal to the total size of hugepages. + # for 2mb pages, totalhugepagesize = vm.nr_hugepages * 2 * 1024 * 1024 + # if the existing kernel.shmmax setting (cat /sys/proc/kernel/shmmax) + # is greater than the calculated totalhugepagesize then set this parameter + # to current shmmax value. + sysctl: + name: "kernel.shmmax" + value: "{{ sysctl.vm.nr_hugepages * 2 * 1024 * 1024 }}" + state: "present" + sysctl_file: "/etc/sysctl.d/90-csit.conf" + reload: "yes" + tags: + - set-sysctl + +- name: Performance Tuning - Adjust watchdog_cpumask + # this value can be used to control on which cpus the watchdog may run. + # the default cpumask is all possible cores, but if no_hz_full is + # enabled in the kernel config, and cores are specified with the + # nohz_full= boot argument, those cores are excluded by default. + # offline cores can be included in this mask, and if the core is later + # brought online, the watchdog will be started based on the mask value. + # + # typically this value would only be touched in the nohz_full case + # to re-enable cores that by default were not running the watchdog, + # if a kernel lockup was suspected on those cores. + sysctl: + name: "kernel.watchdog_cpumask" + value: "{{ sysctl.kernel.watchdog_cpumask }}" + state: "present" + sysctl_file: "/etc/sysctl.d/90-csit.conf" + reload: "yes" + tags: + - set-sysctl + +- name: Performance Tuning - Adjust randomize_va_space + # this option can be used to select the type of process address + # space randomization that is used in the system, for architectures + # that support this feature. + # 0 - turn the process address space randomization off. this is the + # default for architectures that do not support this feature anyways, + # and kernels that are booted with the "norandmaps" parameter. + sysctl: + name: "kernel.randomize_va_space" + value: "0" + state: "present" + sysctl_file: "/etc/sysctl.d/90-csit.conf" + reload: "yes" + tags: + - set-sysctl + +- name: Performance Tuning - Copy Cpufrequtils File + copy: + src: "files/cpufrequtils" + dest: "/etc/default/cpufrequtils" + owner: "root" + group: "root" + mode: "0644" + tags: + - copy-cpufrequtils + +- name: Performance Tuning - Set Ondemand Service To Disable + service: + name: "ondemand" + enabled: "no" + tags: + - set-ondemand + +- name: Performance Tuning - Load Kernel Modules By Default + lineinfile: + path: "/etc/modules" + state: "present" + line: "{{ item }}" + with_items: + - "vfio-pci" + tags: + - load-kernel-modules + +- meta: flush_handlers