+start_load() {
+ unset LATESTER_CONTROL_HACKBENCH
+ case $load in
+ none) ;;
+ cpu) export LATESTER_CONTROL_HACKBENCH=$(sshgw 'nohup setpgid hackbench -g 3 -l 100000 >/dev/null & echo $!');;
+ eth) ping -f -s 60000 -q 192.168.2.3 & loadpid=$!;; # TODO: Generate eth load from another computer
+ can) latester -q -d can1 -i 0x7ff & loadpid=$!;;
+ *) error "Unknown load specification: $load"
+ esac
+}
+
+kill_load() {
+ case $load in
+ none) ;;
+ cpu) sshgw "kill -9 -$LATESTER_CONTROL_HACKBENCH; killall -q -9 hackbench || :";;
+ eth) kill $loadpid;;
+ can) kill $loadpid;;
+ *) error "Unknown load specification: $load"
+ esac
+}
+
+_measure() {
+ if [[ "$OPT_UPDATE" && -f plot.sh && ( plot.sh -nt $test.sh ) ]]; then echo "skiping: up-to-date"; return; fi
+ # Remove data from the last measurement
+ rm -rf *
+ # Kill load generators left possibly from the past runs
+ killall -q ping || :
+ killall -q latester || :
+ if [[ ! "$NO_GW_NEEDED" ]]; then
+ sshgw 'killall -q hackbench || :'
+ # Set can interfaces up
+ sshgw 'for i in 0 1; do ip link show dev can$i|grep -q UP || ip link set can$i up type can bitrate 1000000; done'
+ # Delete all vcan interfaces
+ sshgw 'for dev in $(ip l|grep -o vcan[^:]\\+); do ip link del dev $dev; done'
+ # Reset priorities
+ sshgw 'if pid=`pidof irq/145-can0`; then chrt -p -f 50 $pid > /dev/null; fi'
+ sshgw 'if pid=`pidof irq/146-can1`; then chrt -p -f 50 $pid > /dev/null; fi'
+ sshgw 'if pid=`pidof sirq-net-rx/0`; then chrt -p -f 49 $pid > /dev/null; fi'
+ sshgw 'if pid=`pidof sirq-net-tx/0`; then chrt -p -f 49 $pid > /dev/null; fi'
+ # Set the length of qdisc queue to avoid ENOBUFS errors
+ sshgw 'ifconfig can0 txqueuelen 1000; ifconfig can1 txqueuelen 1000'
+ ifconfig can0 txqueuelen 200
+ ifconfig can1 txqueuelen 200
+ cleanupgw
+
+ type prepare >/dev/null 2>&1 && prepare || :
+ start_load
+ fi
+
+ main
+
+ if [[ ! "$NO_GW_NEEDED" ]]; then
+ kill_load
+ fi
+
+ if [ ! "$SKIPPED" ]; then
+ # Create a plot script at the end to signalize that the
+ # measurement was successfully finished
+ cat > plot.sh <<-EOF
+ #!/bin/bash
+ export kvers=$kvers
+ export hostkvers=$hostkvers
+ export traffic=$traffic
+ export load=$load
+ cd \$(dirname \$0)/$(dirname $script)
+ exec ./$(basename $script) --plot "\$@"
+ EOF
+ chmod +x plot.sh
+ fi
+}
+
+