test

vscode-server-linux-x64-web/out/vs/base/node/cpuUsage.sh

@@ -0,0 +1,64 @@
+#!/bin/bash
+
+function get_total_cpu_time() {
+  # Read the first line of /proc/stat and remove the cpu prefix
+  CPU=(`sed -n 's/^cpu\s//p' /proc/stat`)
+
+  # Sum all of the values in CPU to get total time
+  for VALUE in "${CPU[@]}"; do
+    let $1=$1+$VALUE
+  done
+}
+
+TOTAL_TIME_BEFORE=0
+get_total_cpu_time TOTAL_TIME_BEFORE
+
+# Loop over the arguments, which are a list of PIDs
+# The 13th and 14th words in /proc/<PID>/stat are the user and system time
+# the process has used, so sum these to get total process run time
+declare -a PROCESS_BEFORE_TIMES
+ITER=0
+for PID in "$@"; do
+  if [ -f /proc/$PID/stat ]
+  then
+    PROCESS_STATS=`cat /proc/$PID/stat`
+    PROCESS_STAT_ARRAY=($PROCESS_STATS)
+
+    let PROCESS_TIME_BEFORE="${PROCESS_STAT_ARRAY[13]}+${PROCESS_STAT_ARRAY[14]}"
+  else
+    let PROCESS_TIME_BEFORE=0
+  fi
+
+  PROCESS_BEFORE_TIMES[$ITER]=$PROCESS_TIME_BEFORE
+  ((++ITER))
+done
+
+# Wait for a second
+sleep 1
+
+TOTAL_TIME_AFTER=0
+get_total_cpu_time TOTAL_TIME_AFTER
+
+# Check the user and system time sum of each process again and compute the change
+# in process time used over total system time
+ITER=0
+for PID in "$@"; do
+  if [ -f /proc/$PID/stat ]
+  then
+    PROCESS_STATS=`cat /proc/$PID/stat`
+    PROCESS_STAT_ARRAY=($PROCESS_STATS)
+
+    let PROCESS_TIME_AFTER="${PROCESS_STAT_ARRAY[13]}+${PROCESS_STAT_ARRAY[14]}"
+  else
+    let PROCESS_TIME_AFTER=${PROCESS_BEFORE_TIMES[$ITER]}
+  fi
+
+  PROCESS_TIME_BEFORE=${PROCESS_BEFORE_TIMES[$ITER]}
+  let PROCESS_DELTA=$PROCESS_TIME_AFTER-$PROCESS_TIME_BEFORE
+  let TOTAL_DELTA=$TOTAL_TIME_AFTER-$TOTAL_TIME_BEFORE
+  CPU_USAGE=`echo "$((100*$PROCESS_DELTA/$TOTAL_DELTA))"`
+
+  # Parent script reads from stdout, so echo result to be read
+  echo $CPU_USAGE
+  ((++ITER))
+done