Allow rerunning only the necessary experiments

[can-benchmark.git] / gw-tests / lib.sh

diff --git a/gw-tests/lib.sh b/gw-tests/lib.sh
index 4bc522b6441605262cb35692f3a798ccf6be7180..75fb899c4c0d34910d59ef0157a63ceb98639a83 100644 (file)
--- a/gw-tests/lib.sh
+++ b/gw-tests/lib.sh
@@ -25,6 +25,7 @@ while [ $# -gt 0 ]; do
                *) error "Unknown load specification: $2";;
            esac;
            shift 2;;
+       -u) OPT_UPDATE=1; shift;;
     esac
 done
 
@@ -91,9 +92,10 @@ traffic_and_length() {
 }
 
 start_load() {
+    unset LATESTER_CONTROL_HACKBENCH
     case $load in
        none) ;;
-       cpu) sshgw 'hackbench -g 3 -l 100000' & loadpid=$!;;
+       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"
@@ -103,7 +105,7 @@ start_load() {
 kill_load() {
     case $load in
        none) ;;
-       cpu) kill $loadpid; sshgw "killall -q hackbench || :";;
+       cpu) sshgw "kill -9 -$LATESTER_CONTROL_HACKBENCH; killall -q -9 hackbench || :";;
        eth) kill $loadpid;;
        can) kill $loadpid;;
        *) error "Unknown load specification: $load"
@@ -111,6 +113,7 @@ kill_load() {
 }
 
 _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
@@ -128,6 +131,7 @@ _measure() {
        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
@@ -142,9 +146,10 @@ _measure() {
        kill_load
     fi
 
-    # Create a plot script at the end to signalize that the
-    # measurement was successfully finished
-    cat > plot.sh <<-EOF
+    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=$hostkvers
@@ -153,7 +158,8 @@ _measure() {
        cd \$(dirname \$0)/$(dirname $script)
        exec ./$(basename $script) --plot "\$@"
        EOF
-    chmod +x plot.sh
+       chmod +x plot.sh
+    fi
 }