Refactor stress.sh to improve command structure and enhance log output

Signed-off-by: Eric Deandrea <eric.deandrea@ibm.com>

Author: edeandrea

scripts/stress.sh

@@ -58,7 +58,15 @@ TTFR=$((($(_date) - ts)/1000000))
 RSS=`ps -o rss= -p $CURRENT_PID | sed 's/^ *//g'`
 
 tempdir=$(mktemp -d)
-jbang run@hyperfoil -o $tempdir -PLOAD_DURATION=20s -PWARMUP_DURATION=0s -PWARMUP_PAUSE_DURATION=0s ${thisdir}/perf-lab/load-tests/load-test-fixed-threads-read-all.hf.yml &> ${tempdir}/hf.log
+
+jbang \
+  -Dio.hyperfoil.rootdir=${tempdir} \
+  run@hyperfoil \
+    -o ${tempdir} \
+    -PLOAD_DURATION=20s \
+    -PWARMUP_DURATION=0s \
+    -PWARMUP_PAUSE_DURATION=0s \
+    ${thisdir}/perf-lab/load-tests/load-test-fixed-threads-read-all.hf.yml &> ${tempdir}/hf.log
 
 kill $(lsof -t -i:8080) &>/dev/null
 ${thisdir}/infra.sh -d
@@ -67,4 +75,6 @@ echo "-------------------------------------------------"
 printf "Time to first request: %.3f sec\n" $(echo "$TTFR / 1000" | bc -l)
 printf "RSS (after 1st request): %.1f MB\n" $(echo "$RSS / 1024" | bc -l)
 echo "-------------------------------------------------"
+
 cat ${tempdir}/hf.log
+echo "Other information output by hyperfoil is available in ${tempdir}"