E-mail sync at low load

N900's default e-mail client Modest is a pretty heavy app when doing syncing, not nice if you're in the middle of trying to get something done. Luckily about anything can be scripted in the N900 so here's a script that syncs only when CPU load below the defined level. It also stores the time of last (try of) syncing and syncs only if a defined time has passed.

Run this every 1 minute (or whatever) with Alarmed. Seems to sync all e-mail accounts.

#!/bin/sh

secsbetween=600 #Only run if 10 minutes has passed since last update
maxload=40 #Only run if 5 min average load less than 0.40

if [ -s /tmp/prevmail.tmp ]
  then prev=`cat /tmp/prevmail.tmp`
  else prev=0
fi
cur=`date +%s`
if [ $(( $cur - $secsbetween)) -gt $prev ]; then
  echo Time passed
  load=`uptime|cut -d "," -f 4|tr -d " ."`
  echo Load $load

  if [ $load -lt $maxload ] ; then
    echo Load low enough

    #Uncomment to display a message when updating
    # run-standalone.sh dbus-send --type=method_call\
      --dest=org.freedesktop.Notifications\
       /org/freedesktop/Notifications\
      org.freedesktop.Notifications.SystemNoteInfoprint\
      string:"Updating e-mail..."
    #Make sure connection is open
    run-standalone.sh dbus-send --system --type=method_call\
      --dest=com.nokia.icd /com/nokia/icd com.nokia.icd.connect\
      string:"[ANY]" uint32:0
    sleep 10
    #Sync
    run-standalone.sh dbus-send --type=method_call\
      --dest=com.nokia.asdbus /com/nokia/asdbus\
      com.nokia.asdbus.syncEmail
    date
    date +%s > /tmp/prevmail.tmp
  fi
fi