#!/bin/ksh
# @(#) maxtable.ksh 1.1 97/03/19
# 94/02/12 john h. dubois iii
# 94/06/27 Added help.
# 97/03/19 Let abbreviations for file be given.  Deal with 5.0 output format.

Name=${0##*/}
if [ "$1" = -h ]; then
    print -u2 \
"$Name: Find maximum usage of various kernel tables in sadc files.
Usage: $Name sadc-logfile ...
For each of the proc table, inode table, and open file table, the largest
number used is printed, along with the file it was found in and the table size.
Note that since sadc samples at discrete intervals, this will not neccessarily
be the largest number used during the period covered by the sadc logs.
If a filename does not include any '/' characters, it is searched for in the
directory /usr/adm/sa.  If a number in the range 1-31 is given, the sadc
logfile for that day in /usr/adm/sa is read.  If no filenames are given, all
files in /usr/adm/sa are used.
Example:
$Name 12"
    exit 0
fi

if [ $# -eq 0 ]; then
    cd /usr/adm/sa || exit 1
    set -- sa[0-3][0-9]
    if [ $# -eq 1 -a ! -f "$1" ]; then
	print -ru2 -- "$Name: No sadc logfiles in /usr/adm/sa; exiting."
	exit 1
    fi
fi

typeset -Z2 mday

for file; do
    if [[ "$file" = @([0-9]) && file -ge 1 && file -le 31 ]]; then
	mday=$file
	file=sa$mday
    fi
    [[ "$file" != */* ]] && file=/usr/adm/sa/$file
    sar -v -f "$file" |
    sed "/^[0-9][0-9]:/!d;s'^'$file ';s'/  *'/'g" > $file.sar-v || exit
    sarfiles="$sarfiles $file.sar-v"
done

# sar -v output formats:
# 3.2v5:
# 00:00:02 proc-sz ov inod-sz ov file-sz ov lock-sz
# 01:00:01  56/100  0 173/450  0 204/350  0   3/100
# 3.2v4:
# 00:00:01  proc-sz   ov  inod-sz   ov  file-sz   ov  lock-sz
# 01:00:01  105/ 130   0  443/1075   0  424/ 682   0    6/ 128

set -A Names procs inode files
set -A cols 3 5 7

typeset -i i=0
while [ i -le 2 ]; do
    s=${cols[i]}
    set -- $(sort -nr +$(($s-1)) -$s $sarfiles | head -1)
    filename=$1
    echo -n "Max ${Names[i]}: $1 $2"
    shift $((s-1))
    echo " $1"
    let i+=1
done

rm -f $sarfiles