initial import (Boeing r1752, NRL r878)

scripts/perf/timesyncstop.sh

@@ -0,0 +1,51 @@
+#!/bin/sh
+# (c)2010-2012 the Boeing Company
+# author: Yueli Yang <yueli.yang@boeing.com>
+#
+# Stop timesync service. If it was not yet in sync with any ntp server,
+# adjust its time to the first ntp server in # configured in /etc/ntp.conf 
+#
+# Usage: sudo sh timesyncstop.sh [deubg]
+
+dbg=$1
+if [ "$dbg" = "debug" ]; then
+    date +%y%h%d-%T-%N
+fi
+svs=""
+if [ -e /usr/sbin/ntpd ]; then
+   # command "sudo /usr/sbin/ntpd -q -g"  will start the ntp service and 
+   # keep it on until it performs a good synchronization, then it leaves.
+   # It is not quick enough for our need here
+   /etc/init.d/ntp status
+   if [ $? = 0 ]; then
+      svs=`ntpq -c peers | awk {'print $1'} | grep ^*`
+      if [ "$dbg" = "debug" ]; then
+          ntpq -c peers
+          echo "get time servers for later need: $svs"
+          ntptime
+          echo "terminate ntpd process"
+      fi 
+      /etc/init.d/ntp stop
+   fi
+
+   # if there are time servers configured in file /etc/ntp.conf, 
+   # adjust time to the first server
+   if [ "$svs" = "" ]; then
+      svs=`grep ^server /etc/ntp.conf | awk {'print $2'} `
+      if [ "$dbg" = "debug" ]; then
+          echo "$svs"
+      fi
+      for sv in "$svs"; do
+          ntpdate $sv  
+          # may use "sntp -s $sv" or "rdate" if ntpdate is deprecated
+          break
+      done
+   else
+      if [ "$dbg" = "debug" ]; then
+         echo No time adjustment because time sync was stable with $svs
+      fi
+   fi
+fi
+if [ "$dbg" = "debug" ]; then
+    date +%y%h%d-%T-%N
+fi