#!/bin/bash
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# $Header: /var/log/sar/RCS/intr,v 1.4 1997/06/19 05:28:18 dgavin Exp $
#
# intr - display interrupt activity
#
# NOTE: Some DEC AXP systems have a lot more than 16 interrupts!
#       This script assumes interrupts 0 - 15 only.
#
# input - /var/log/sar/data/intr.Mondd.yy
# output- chart for each active interrupt showing interrupts per second
#
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#
trap '/bin/rm /tmp/gnuplot.intr* 2>/dev/null;exit' SIGHUP SIGINT SIGQUIT SIGTERM
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#
# Function definitions
#
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function checkForEmpty {
if [ ! -f ${1} ] ; then echo "0 0" >${1} ; fi
return
}
function minMax {
MINMAX=`awk '
BEGIN{min=0;max=0;}
{
 if ( $2 > max) { max = $2;}
 if ( $2 < min) { min = $2;}
}
END{ printf("%d %d\n",min,max);}' $1`
return
}
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#
# Mainline code
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#
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# Variable initialization
#
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HARDCOPY=""
GHOSTVIEW=""
CMDNAME=`basename $0`
#
HELP="${CMDNAME} generates X11 or hardcopy graph of interrupt activity."
USAGE="${CMDNAME} [-DHLVhPp] [MonDD[.YY]]
  -D turns on execution tracing
  -H displays help info and exits
  -L displays RCS log and exits
  -V display Revision info and exits
  -h displays help info and exits
  -P Print without display
  -p display and offer print option

  MonDD.YY - day to work with, defaults to today
   i.e. Jun12.97 -the year will default to this year

"
#
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# Parse options
#
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#
while getopts DHLVhPp c ; do
  case ${c} in
    h|H) echo -e "\n${HELP}\n\n${USAGE}\n"
       exit 1
       ;;
    p) HARDCOPY="YES"
       GHOSTVIEW="YES"
       ;;
    P) HARDCOPY="YES"
       GHOSTVIEW=""
       ;;
    D) echo "DEBUG ON"
       set -x
       DEBUG="yes"
       trap '' SIGHUP SIGINT SIGQUIT SIGTERM
       ;;
    L) echo '
$Log: intr,v $
Revision 1.4  1997/06/19 05:28:18  dgavin
cleanup
dgavin

Revision 1.3  1997/06/12 03:52:08  dgavin
added comment about Alpha interrupts

Revision 1.2  1997/06/12 03:45:10  dgavin
removed extra log area

Revision 1.1  1997/06/12 03:39:28  dgavin
Initial revision

'
       exit 1
       ;;
    V) echo '$Revision: 1.4 $'
       exit 1
       ;;
    ?) echo -e "\n${USAGE}\n"
       exit 3
       ;;
  esac
done
# re-align the positional parameters as $1, $2,...
shift `expr ${OPTIND} - 1`
#
cd /var/log/sar/data
if [ $# -eq 0 ] ; then
 FN="intr.`date +%b%d.%y`"
else
 l=`echo ${1} | wc -c`
 l=`expr ${l} + 0`
 case ${l} in
  6) FN="intr.${1}.`date +%y`";;
  9) FN="intr.${1}";;
  *) echo -e "\n${CMDNAME}: Invalid date  - ${1}\n"
     exit
     ;;
 esac
fi
if [ ! -f ${FN} ] ; then
  echo "No such file: ${FN}"
  exit
fi
if [ ! -r ${FN} ] ; then
  echo "File not readable: ${FN}"
  exit
fi
if [ ! -s ${FN} ] ; then
  echo "File empty: ${FN}"
  exit
fi
#
#                                               1       1       1       1 1 1
#hhmm total    0        1      2 3 4  5 6 7 8 9 0       1       2       3 4 5
#0940 71648935 67091830 275952 0 0 23 0 1 0 0 0 1146614 1018791 2115723 1 0 0
#0945 71682636 67121886 276671 0 0 23 0 1 0 0 0 1147073 1020430 2116551 1 0 0

awk '
BEGIN{}
{
 if (NR == 1) {
   mm=substr($1,3,2) * .016;
   tim=substr($1,1,2)+mm;
   old_time = (substr($1,1,2) * 3600) + (substr($1,3,2) * 60);
   toks = split($0,old_array," ")
 } else {
   mm=substr($1,3,2) * .016;
   tim=substr($1,1,2)+mm;
   now = (substr($1,1,2) * 3600) + (substr($1,3,2) * 60);
   delta_tim = now - old_time;
   if(delta_tim < 1) {
     delta_tim = 1;
   } 
   toks = split($0,array," ")
   for (i=1;i<=toks;i++) {
     if ( old_array[i] > array[i] ) {
       old_array[i] = 0 ;
     }
   }
   if ( delta_tim < 1 ) { delta_tim = 1;}
   for (i=3;i<=toks;i++) {
     Delta = (array[i] - old_array[i])/delta_tim;
     fn="/tmp/gnuplot.intr." i - 3;
     printf("%5.2f %9.4f\n",tim,Delta) > fn ;
   } 
   toks = split($0,old_array," ")
   old_time = now;
 }
}
END{}' ${FN}
#
# Get system name and date of report into variables...
system=`hostname -s`
sysdate=`echo ${FN} | cut -c 6-`
echo "Generating plot for $system $sysdate"
#
#
# Start building the /tmp/gnuplot.intr.script
#
if [ -z ${HARDCOPY} ]; then
  TERMINAL="set terminal X11"
  PAUSE="pause 10"
  YLABEL=""
else
  TERMINAL='set terminal postscript landscape monochrome dashed "Times-Roman" 18
set output "/tmp/gnuplot.ps"'
  PAUSE=""
  YLABEL="set ylabel Interrupts"
fi
cat <<EOF >/tmp/gnuplot.intr.script 
${TERMINAL}
set data style lines
set nogrid
set key
set title "Interrupts Per Second - ${system} on ${sysdate}"
set xlabel "Time of Day"
set xrange [00:24]
set xtics 0,1,24
${YLABEL}
set autoscale y
EOF
# get a properly sorted list of data files and eliminate
# the ones with all zeroes (unused interrupt)
for I in `/bin/ls -1 /tmp/gnuplot.intr.[0-9]* | \
  /usr/bin/sort -n -t"." +2` ; do
minMax ${I}
set ${MINMAX}
intr=`echo ${I} | cut -d"." -f3`
if [ ${1} -eq 0 -a ${2} -eq 0 ] ; then
 echo "Skipped ${intr}"
else
if [ ${intr} -lt 10 ]; then
  INT=' '${intr}
else
  INT=${intr}
fi
# get the text associated with this interrupt number from /proc/interrupts
TEXT=`grep "^${INT}" /proc/interrupts | awk \
 '{ for (i=3;i<=NF;i++){ TEXT = TEXT" "$(i); } printf("%s\n", TEXT); }'`
cat <<EOF >>/tmp/gnuplot.intr.script
plot \
"${I}" title "IRQ ${intr} (${TEXT} )" with line 1
${PAUSE}
EOF
fi
done
echo "quit" >>/tmp/gnuplot.intr.script
#
# Generate the plots
#
gnuplot /tmp/gnuplot.intr.script
#
if [ .${HARDCOPY} = ".YES" ]; then
  /usr/local/bin/psnup -8 -cq /tmp/gnuplot.ps 2>/dev/null \
     >/tmp/gnuplot.intr.${system}.ps
  if [ -z ${GHOSTVIEW} ] ; then
    lpr /tmp/gnuplot.intr.${system}.ps
  else
    ghostview -upsidedown -magstep 3 /tmp/gnuplot.intr.${system}.ps
    echo "Print ?"
    read ans
    if [ ${ans} = "y" ] ; then
      lpr /tmp/gnuplot.intr.${system}.ps
    fi
  fi
fi
# clean up the junk
if [ ${DEBUG}. = "." ]; then
  rm /tmp/gnuplot.intr* 2>/dev/null
fi
exit