Move some common scripts from multinode-demo/ to scripts/

scripts/oom-score-adj.sh

@@ -0,0 +1,20 @@
+# |source| this file
+#
+# Adjusts the OOM score for the specified process.  Linux only
+#
+# usage: oom_score_adj [pid] [score]
+#
+oom_score_adj() {
+  declare pid=$1
+  declare score=$2
+  if [[ $(uname) != Linux ]]; then
+    return
+  fi
+
+  echo "$score" > "/proc/$pid/oom_score_adj" || true
+  declare currentScore
+  currentScore=$(cat "/proc/$pid/oom_score_adj" || true)
+  if [[ $score != "$currentScore" ]]; then
+    echo "Failed to set oom_score_adj to $score for pid $pid (current score: $currentScore)"
+  fi
+}