# tuned configuration
#
# Red Hat Enterprise Linux for Real Time Documentation:
# https://docs.redhat.com

[main]
summary=Optimize for realtime workloads
include = network-latency

[variables]
# User is responsible for updating variables.conf with variable content such as isolated_cores=X-Y 
include = /etc/tuned/realtime-variables.conf

isolated_cores_assert_check = \\${isolated_cores}
# Make sure isolated_cores is defined before any of the variables that
# use it (such as assert1) are defined, so that child profiles can set
# isolated_cores directly in the profile (tuned.conf)
isolated_cores = ${isolated_cores}
# Fail if isolated_cores are not set
assert1=${f:assertion_non_equal:isolated_cores are set:${isolated_cores}:${isolated_cores_assert_check}}

# Non-isolated cores cpumask including offline cores
not_isolated_cpumask = ${f:cpulist2hex_invert:${isolated_cores}}
isolated_cores_expanded=${f:cpulist_unpack:${isolated_cores}}
isolated_cpumask=${f:cpulist2hex:${isolated_cores_expanded}}
isolated_cores_online_expanded=${f:cpulist_online:${isolated_cores}}

# Fail if isolated_cores contains CPUs which are not online
assert2=${f:assertion:isolated_cores contains online CPU(s):${isolated_cores_expanded}:${isolated_cores_online_expanded}}

# Assembly managed_irq
# Make sure isolate_managed_irq is defined before any of the variables that
# use it (such as managed_irq) are defined, so that child profiles can set
# isolate_managed_irq directly in the profile (tuned.conf)
isolate_managed_irq = ${isolate_managed_irq}
managed_irq=${f:regex_search_ternary:${isolate_managed_irq}:\b[y,Y,1,t,T]\b:managed_irq,domain,:}

[sysctl]
kernel.hung_task_timeout_secs = 600
kernel.nmi_watchdog = 0
kernel.sched_rt_runtime_us = -1
vm.stat_interval = 10
kernel.timer_migration = 0

[sysfs]
/sys/bus/workqueue/devices/writeback/cpumask = ${not_isolated_cpumask}
/sys/devices/virtual/workqueue/cpumask = ${not_isolated_cpumask}
/sys/devices/system/machinecheck/machinecheck*/ignore_ce = 1

[bootloader]
cmdline_realtime=+isolcpus=${managed_irq}${isolated_cores} intel_pstate=disable nosoftlockup tsc=nowatchdog

[irqbalance]
banned_cpus=${isolated_cores}

[script]
script = ${i:PROFILE_DIR}/script.sh

[scheduler]
isolated_cores=${isolated_cores}
