run.sh

#!/bin/sh

rm virtuoso_run.log 2> /dev/null
cp virtuoso.ini.template virtuoso.ini

# adjust virtuoso memory usage settings
# NumberOfBuffers = (Free Memory * 0.66)/8000
# MaxDirtyBuffers = 3/4 of NumberOfBuffers
free_memory=$(free -b | awk 'NR==2 {print $2}')
NumberOfBuffers=$(($free_memory*66/800000))
MaxDirtyBuffers=$(($NumberOfBuffers*3/4))
sed -i -e "s/NumberOfBuffers          = 10000/NumberOfBuffers          = $NumberOfBuffers/g" virtuoso.ini
sed -i -e "s/MaxDirtyBuffers          = 6000/MaxDirtyBuffers          = $MaxDirtyBuffers/g" virtuoso.ini
echo $(date +%H:%M:%S.%N | cut -b1-12)" : Adjusted NumberOfBuffers="$NumberOfBuffers
echo $(date +%H:%M:%S.%N | cut -b1-12)" : Adjusted MaxDirtyBuffers="$MaxDirtyBuffers

# adjust query performance settings
total_threads=$(cat /proc/cpuinfo | grep processor | wc -l)
sed -i -e "s/AsyncQueueMaxThreads 	 	= 10/AsyncQueueMaxThreads          = $total_threads/g" virtuoso.ini 
sed -i -e "s/ThreadsPerQuery 	 	= 4/ThreadsPerQuery          = $total_threads/g" virtuoso.ini
echo $(date +%H:%M:%S.%N | cut -b1-12)" : Adjusted AsyncQueueMaxThreads="$total_threads
echo $(date +%H:%M:%S.%N | cut -b1-12)" : Adjusted ThreadsPerQuery="$total_threads

echo $(date +%H:%M:%S.%N | cut -b1-12)" : Starting OpenLink Virtuoso Universal Server..."
virtuoso-t -f > /versioning/virtuoso_run.log 2>&1 &
seconds_passed=0

# wait until virtuoso is ready
echo $(date +%H:%M:%S.%N | cut -b1-12)" : Waiting until Virtuoso Server is online..."
until grep -m 1 "Server online at 1111" /versioning/virtuoso_run.log
do
   sleep 1
   seconds_passed=$((seconds_passed+1))
   echo $seconds_passed >> out.txt
   if [ $seconds_passed -gt 20 ]; then
      echo $(date +%H:%M:%S.%N | cut -b1-12)" : Could not start Virtuoso Server. Timeout: [20 sec]"
      echo "Retrying..."
      seconds_passed=0
      virtuoso-t -f > /versioning/virtuoso_run.log 2>&1 &
   fi
done

echo $(date +%H:%M:%S.%N | cut -b1-12)" : Virtuoso Server started successfully."

# run the system adapter
echo $(date +%H:%M:%S.%N | cut -b1-12)" : Running the System adapter..."
java -Xmx4g -cp /versioning/versioning.jar org.hobbit.core.run.ComponentStarter org.hobbit.benchmark.versioning.systems.VirtuosoSystemAdapter