Stress test hardware

stessload.sh

#!/bin/bash


# Sækja stress
# 
# yum localinstall ftp://fr2.rpmfind.net/linux/dag/redhat/el7/en/x86_64/dag/RPMS/stress-1.0.2-1.el7.rf.x86_64.rpm
# 
# eða 
#  wget ftp://fr2.rpmfind.net/linux/dag/redhat/el7/en/x86_64/dag/RPMS/stress-1.0.2-1.el7.rf.x86_64.rpm
#  yum localinstall stress-1.0.2-1.el7.rf.x86_64.rpm
#  
#  sækja bc
#  yum install bc -y


memoryPercentage="0.9"

#Fá CPU count.
cpuCount=$(cat /proc/cpuinfo | grep MHz | wc -l)

# Fá allt memory úr proc/meminfo
totalMem=$(cat /proc/meminfo  | grep MemTotal |  awk '{print $2}');

#man ekki alveg afhverju ég valdi 40 ...
memWorkers=40
# to bytes

# Sækja allt minni í vélinni
totalMem=$(echo "$totalMem * 1024" | bc );

# Sækja allt minni í vélinni sem á að testa
mostMemory=$( echo "$totalMem * $memoryPercentage"  | bc  -l );

# Fá allt minni sem þarf að testa í tölu..
memToTest=$(echo $mostMemory | cut -d . -f1 );


# Skipta minninu niður á workera
memPerWorker=$(echo $memToTest / $memWorkers | bc );


totalMemHuman=$(echo "$totalMem / 1024 / 1024 / 1024 " | bc )

memToTestHuman=$(echo "$memToTest / 1024 / 1024 / 1024 " | bc )

memPerWorkerHuman=$(echo "$memPerWorker / 1024 / 1024 " | bc)
echo "
Total memory: $totalMemHuman GB
Cpu Count: $cpuCount 
Memory to test: $memToTestHuman GB
Workers: $memWorkers
Memory per worker: $memPerWorkerHuman MB"

# Keyra þetta í gang..
stress -c $cpuCount -t 86000 -m $memWorkers --vm-bytes $memPerWorker