pridhiviraj
commented
6 years ago @stewart-ibm Used below tests reproduce this issue, it is occurring on more systems now.
tlbie_test
============
two instances
CPU hotplug tests;
=========================
cat cpu_hotplug.sh
#!/bin/bash
set -x
for ((i=0; i<100000; i++))
do
ppc64_cpu --cores-on=1
ppc64_cpu --cores-on=32
done
cpu frequency read tests:
========================
cat read_frequency.sh
#!/bin/bash
set -x
for ((i=0; i<100000; i++))
do
ppc64_cpu --frequency
done
CPU Governor change test:
===========================
cat cpu_freq_gov1.sh
#!/bin/bash
set -x
CPU_SYS_DIR=/sys/devices/system/cpu/
FIRST_AVAIL_CPU=$(cat /sys/devices/system/cpu/present | cut -d'-' -f1)
res=$(cat /sys/devices/system/cpu/cpu$FIRST_AVAIL_CPU/cpufreq/scaling_available_governors)
IFS=' ' read -r -a array <<< "$res"
for ((i=0; i<1000; i++))
do
for gov in "${array[@]}"
do
for j in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do echo $gov > $j; done
done
done
shriyak
ghost
mzipse
svaidy
npiggin
We have long long ago bug still existed even in latest upstream PNOR as well as in official released PNOR's. @stewart-ibm This issue occurring in both your witherspoon system which is having latest code, and also got system from vaidy with released PNOR, which is also hitting the issue.
PNOR Level: