diff options
Diffstat (limited to 'resources/tools/testbed-setup')
| -rw-r--r-- | resources/tools/testbed-setup/playbooks/files/90-csit | 158 |
1 files changed, 79 insertions, 79 deletions
diff --git a/resources/tools/testbed-setup/playbooks/files/90-csit b/resources/tools/testbed-setup/playbooks/files/90-csit index b53106e6b3..2304162ce8 100644 --- a/resources/tools/testbed-setup/playbooks/files/90-csit +++ b/resources/tools/testbed-setup/playbooks/files/90-csit @@ -1,79 +1,79 @@ -# change the minimum size of the hugepage pool.
-vm.nr_hugepages=4096
-
-# 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).
-vm.max_map_count=200000
-
-# hugetlb_shm_group contains group id that is allowed to create sysv
-# shared memory segment using hugetlb page.
-vm.hugetlb_shm_group=0
-
-# 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.
-vm.swappiness=0
-
-# this parameter can be used to control the nmi watchdog
-# (i.e. the hard lockup detector) on x86 systems.
-#
-# 0 - disable the hard lockup detector
-# 1 - enable the hard lockup detector
-#
-# the hard lockup detector monitors each cpu for its ability to respond to
-# timer interrupts. the mechanism utilizes cpu performance counter registers
-# that are programmed to generate non-maskable interrupts (nmis) periodically
-# while a cpu is busy. hence, the alternative name 'nmi watchdog'.
-#
-# the nmi watchdog is disabled by default if the kernel is running as a guest
-# in a kvm virtual machine. this default can be overridden by adding
-#kernel. nmi_watchdog=1
-
-# 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.
-kernel.shmmax=8589934592
-
-# 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.
-kernel.randomize_va_space=0
-
-# this parameter can be used to control the soft lockup detector.
-#
-# 0 - disable the soft lockup detector
-# 1 - enable the soft lockup detector
-#
-# the soft lockup detector monitors cpus for threads that are hogging the cpus
-# without rescheduling voluntarily, and thus prevent the 'watchdog/n' threads
-# from running. the mechanism depends on the cpus ability to respond to timer
-# interrupts which are needed for the 'watchdog/n' threads to be woken up by
-# the watchdog timer function, otherwise the nmi watchdog - if enabled - can
-# detect a hard lockup condition.
-#kernel.soft_watchdog=0
-
-# 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.
-kernel.watchdog_cpumask=0,18
+# change the minimum size of the hugepage pool. +vm.nr_hugepages=4096 + +# 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). +vm.max_map_count=200000 + +# hugetlb_shm_group contains group id that is allowed to create sysv +# shared memory segment using hugetlb page. +vm.hugetlb_shm_group=0 + +# 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. +vm.swappiness=0 + +# this parameter can be used to control the nmi watchdog +# (i.e. the hard lockup detector) on x86 systems. +# +# 0 - disable the hard lockup detector +# 1 - enable the hard lockup detector +# +# the hard lockup detector monitors each cpu for its ability to respond to +# timer interrupts. the mechanism utilizes cpu performance counter registers +# that are programmed to generate non-maskable interrupts (nmis) periodically +# while a cpu is busy. hence, the alternative name 'nmi watchdog'. +# +# the nmi watchdog is disabled by default if the kernel is running as a guest +# in a kvm virtual machine. this default can be overridden by adding +#kernel. nmi_watchdog=1 + +# 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. +kernel.shmmax=8589934592 + +# 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. +kernel.randomize_va_space=0 + +# this parameter can be used to control the soft lockup detector. +# +# 0 - disable the soft lockup detector +# 1 - enable the soft lockup detector +# +# the soft lockup detector monitors cpus for threads that are hogging the cpus +# without rescheduling voluntarily, and thus prevent the 'watchdog/n' threads +# from running. the mechanism depends on the cpus ability to respond to timer +# interrupts which are needed for the 'watchdog/n' threads to be woken up by +# the watchdog timer function, otherwise the nmi watchdog - if enabled - can +# detect a hard lockup condition. +#kernel.soft_watchdog=0 + +# 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. +kernel.watchdog_cpumask=0,18 |