diff options
Diffstat (limited to 'bin')
| -rwxr-xr-x | bin/short-idle-check.sh | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/bin/short-idle-check.sh b/bin/short-idle-check.sh new file mode 100755 index 0000000..34069e3 --- /dev/null +++ b/bin/short-idle-check.sh @@ -0,0 +1,193 @@ +#!/bin/bash + +usage() { + cat <<EOU + +${0} - check short idle residency + + Usage: ${0} [ -s <interval> ] + + -s <interval> -- specify a idle time interval in seconds + +EOU +} + +re='^[0-9]+$' +sleep_time=20 + +while [ $# -gt 0 ] +do + case "$1" in + -s) + if ! [[ $2 =~ $re ]]; then + usage + exit 1 + fi + sleep_time=${2} + break + ;; + --help) + usage + exit 1 + ;; + *) + usage + exit 1 + ;; + esac + shift +done + +msr_support=$(find /dev/cpu -name msr) +if [ -z "$msr_support" ]; then + echo "Attempting to load Intel MSR kernel module..." + modprobe msr +fi + +cstate_pkg_list=$(ls /sys/bus/event_source/devices/cstate_pkg/events/) +msr_pc2=0 +msr_pc3=0 +msr_pc6=0 +msr_pc7=0 +msr_pc8=0 +msr_pc9=0 +msr_pc10=0 + +for event in $cstate_pkg_list; +do + case "$event" in + "c2-residency") + msr_pc2=1 + ;; + "c3-residency") + msr_pc3=1 + ;; + "c6-residency") + msr_pc6=1 + ;; + "c7-residency") + msr_pc7=1 + ;; + "c8-residency") + msr_pc8=1 + ;; + "c9-residency") + msr_pc9=1 + ;; + "c10-residency") + msr_pc10=1 + ;; + esac +done + +# Find the platform's cstate accroding to +# registered event node +# https://elixir.bootlin.com/linux/latest/source/arch/x86/events/intel/cstate.c#L504 +# +# Find the MSR register in +# https://elixir.bootlin.com/linux/latest/source/arch/x86/include/asm/msr-index.h#L285 +# NHM support +if [ $((msr_pc2+msr_pc8+msr_pc9+msr_pc10)) -eq 0 ] && [ $msr_pc3 -eq 1 ] && [ $msr_pc6 -eq 1 ] && [ $msr_pc7 -eq 1 ]; then + echo "Identified device as supporting Intel Nehalem C-states" + counter_pc7=$(rdmsr -p 0 -o 0x3fa) + sleep "$sleep_time" + new_counter_pc7=$(rdmsr -p 0 -o 0x3fa) + delt_pc7=$((new_counter_pc7-counter_pc7)) + echo "Target MSR PC7 residency delta before/after idle is $delt_pc7" + if [ $delt_pc7 -gt 0 ]; then + echo "PASS: Time spent in PC7 state" + exit 0 + else + exit 1 + fi +fi + +# SNB support +if [ $((msr_pc8+msr_pc9+msr_pc10)) -eq 0 ] && [ $msr_pc2 -eq 1 ] && [ $msr_pc3 -eq 1 ] && [ $msr_pc6 -eq 1 ] && [ $msr_pc7 -eq 1 ]; then + echo "Identified device as supporting Intel Sandybridge C-states" + counter_pc7=$(rdmsr -p 0 -o 0x3fa) + sleep "$sleep_time" + new_counter_pc7=$(rdmsr -p 0 -o 0x3fa) + delt_pc7=$((new_counter_pc7-counter_pc7)) + echo "Target MSR PC7 residency delta before/after idle is $delt_pc7" + if [ $delt_pc7 -gt 0 ]; then + echo "PASS: Time spent in PC7 state" + exit 0 + else + exit 1 + fi +fi + +# SLM support with SLM_PKG_C6_USE_C7_MSR +if [ $((msr_pc2+msr_pc3+msr_pc7+msr_pc8+msr_pc9+msr_pc10)) -eq 0 ] && [ $msr_pc6 -eq 1 ]; then + echo "Identified device as supporting Intel Silvermont C-states" + counter_pc6=$(rdmsr -p 0 -o 0x3fa) + sleep "$sleep_time" + new_counter_pc6=$(rdmsr -p 0 -o 0x3fa) + delt_pc6=$((new_counter_pc6-counter_pc6)) + echo "Target MSR PC6 residency delta before/after idle is $delt_pc6" + if [ $delt_pc6 -gt 0 ]; then + echo "PASS: Time spent in PC6 state" + exit 0 + else + exit 1 + fi +fi + +# KNL support +if [ $((msr_pc7+msr_pc8+msr_pc9+msr_pc10)) -eq 0 ] && [ $msr_pc2 -eq 1 ] && [ $msr_pc3 -eq 1 ] && [ $msr_pc6 -eq 1 ]; then + echo "Identified device as supporting Intel Knights Landing C-states" + counter_pc6=$(rdmsr -p 0 -o 0x3f9) + sleep "$sleep_time" + new_counter_pc6=$(rdmsr -p 0 -o 0x3f9) + delt_pc6=$((new_counter_pc6-counter_pc6)) + echo "Target MSR PC6 residency delta before/after idle is $delt_pc6" + if [ $delt_pc6 -gt 0 ]; then + echo "PASS: Time spent in PC6 state" + exit 0 + else + exit 1 + fi +fi + +# GLM support +if [ $((msr_pc7+msr_pc8+msr_pc9)) -eq 0 ] && [ $msr_pc2 -eq 1 ] && [ $msr_pc3 -eq 1 ] && [ $msr_pc6 -eq 1 ] && [ $msr_pc10 -eq 1 ]; then + echo "Identified device as supporting Intel Goldmont C-states" + counter_pc6=$(rdmsr -p 0 -o 0x3f9) + counter_pc10=$(rdmsr -p 0 -o 0x632) + sleep "$sleep_time" + new_counter_pc6=$(rdmsr -p 0 -o 0x3f9) + new_counter_pc10=$(rdmsr -p 0 -o 0x632) + delt_pc6=$((new_counter_pc6-counter_pc6)) + delt_pc10=$((new_counter_pc10-counter_pc10)) + echo "Target MSR PC6 residency delta before/after idle is $delt_pc6" + if [ $((delt_pc6+delt_pc10)) -gt 0 ]; then + echo "PASS: Time spent in at least one of PC6 or PC10 state" + exit 0 + else + exit 1 + fi +fi + +# ADL/ICL/CNL/HSWULT +echo "Assuming device supports one of Alderlake/Icelake/Cannonlake/Haswell C-states" +counter_pc8=$(rdmsr -p 0 -o 0x630) +counter_pc9=$(rdmsr -p 0 -o 0x631) +counter_pc10=$(rdmsr -p 0 -o 0x632) +sleep "$sleep_time" +new_counter_pc8=$(rdmsr -p 0 -o 0x630) +new_counter_pc9=$(rdmsr -p 0 -o 0x631) +new_counter_pc10=$(rdmsr -p 0 -o 0x632) +delt_pc8=$((new_counter_pc8-counter_pc8)) +delt_pc9=$((new_counter_pc9-counter_pc9)) +delt_pc10=$((new_counter_pc10-counter_pc10)) +echo "PC8 MSR residency delta before/after idle is $delt_pc8" +echo "PC9 MSR residency delta before/after idle is $delt_pc9" +echo "PC10 MSR residency delta before/after idle is $delt_pc10" + +if [ $((delt_pc8+delt_pc9+delt_pc10)) -gt 0 ]; then + echo "PASS: Time spent in at least one of PC8, PC9 or PC10 states" + exit 0 +fi + +exit 1 |