#!/bin/sh
# 
# Simple gmetric script to display the memory and CPU used by xrootd
# authors: Ofer Rind and Jerome Lauret, RCF/BNL 
# 

MCHAN=`/bin/awk '/mcast_chan/{print $2}' /etc/gmond.conf`
GMETRIC="/usr/bin/gmetric --mcast_ttl=3 -c$MCHAN -d3000"

for proc in xrootd olbd; do
  stats=( `/bin/ps --no-headers -o rss,vsz,%cpu -C $proc` )
  n=3
  while [ ${#stats[*]} -gt $n ] ; do
    let m=n%3
    stats[$m]=`/bin/echo ${stats[$m]} ${stats[$n]}|/bin/awk '{print $1+$2}'`
    let n+=1
  done
  if [ ${stats} ] || eval "stats=( 0 0 0 )"; then
    $GMETRIC -nmem_${proc} -tuint32 -uKB --value ${stats[0]}
    $GMETRIC -nvsz_${proc} -tuint32 -uKB --value ${stats[1]}
    $GMETRIC -ncpu_${proc} -tfloat  -u%  --value ${stats[2]}
  fi
done