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#!/bin/sh
. ./hw_vars
create_sparse_file $SPARSE_FILE $mem
migrate_unit=$((mem/nr_node/2))
numactl --interleave=all $USEMEM -f $SPARSE_FILE --readonly $migrate_unit --detach --sleep $((runtime * 2)) --pid-file $PIDFILE
pid=$(cat $PIDFILE)
rm $PIDFILE
rm $SPARSE_FILE
start_time=$(date +%s%N)
start_time=${start_time%???}
count=0
while :
do
for i in `seq $nr_node`
do
migratepages $pid $((i-1)) $(($i%$nr_node))
now=$(date +%s%N)
now=${now%???}
count=$((count+1))
usecs=$(( now - start_time ))
[ "$usecs" -gt ${runtime}000000 ] && break 2
done
done
throughput=$((count * migrate_unit / usecs))
echo "$count * $migrate_unit bytes migrated, $usecs usecs, $throughput MB/s"
kill -INT $pid
# the sleep is necessary for umount to succeed
# it takes some time to kill the usemem process
while [ -d /proc/$pid -a "$(cat /proc/$pid/comm 2>/dev/null)" = 'usemem' ]
do
sleep 0.1
done
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