Capacity Reports - VIO Server Run NMON

Running NMON on the VIO Server

#!/usr/bin/ksh
#
################################################################
# Program : start_nmon.ksh
# Author  : Stephen Diwell
# Date    : 4th November 2009
# Desc    : This script is run from roots cron once at 0000
#           and from /etc/rc.d/rc2.d at system reboot time.
#           This script starts the /usr/bin/topas_nmon process.
################################################################

#
# Tunable Variables
#
nmon_exe=/usr/bin/topas_nmon            # nmon executable
[[ ! -f ${nmon_exe} ]] && nmon_exe=/usr/local/bin/nmon

nmon_sleep_seconds=300                  # sleep time between nmon iterations
nmon_stats_count=288                    # number or nmon iterations
nmon_file_mask=nmon                     # output filename mask

# Flags for topas_nmon are:
#       d for disk service times
#       N for NFS stats
#       ^ for adapter stats
#       O for SEA adapter stats - VIO Server only

if lsdev -Cc adapter | grep -q "Shared Ethernet Adapter"
  then
        FLAGS="-d -N -^ -O"                     # VIO Server
        nmon_monitor_dir=/home/padmin/nmon      # Output directory - VIO Server
  else
        ##FLAGS="-d -N -^ -Y"                   # AIX Server - With summary tab
        FLAGS="-d -N -^"                        # AIX Server - Without summary tab
        nmon_monitor_dir=/usr/local/nmon        # Output directory - AIX Server
fi

[[ ! -d ${nmon_monitor_dir} ]] && mkdir -p -m 775 ${nmon_monitor_dir}

#
# Functions
#
format_number()
{

#
# returns number passed with leading zeros padded to length
#

number=$1
length=$2

echo $number | awk '{ printf "%0'${length}'d",$1 }'
}

#
# Main
#

hostname=$( hostname )
todays_date=$( date +%d%m%Y )

#
# Figure out the nmon output file name - Allow for nmon restarts
#

count=1

out_file=${nmon_monitor_dir}/${nmon_file_mask}_${hostname}_${todays_date}_$(format_number ${count} 2).csv

while [[ -s ${out_file} || -s ${out_file}.Z ]]
do
        (( count = count + 1 ))
        out_file=${nmon_monitor_dir}/${nmon_file_mask}_${hostname}_${todays_date}_$(format_number ${count} 2).csv
done


#
# Run nmon
#

print "Writing nmon output to $out_file"

cmd="${nmon_exe} -F ${out_file} ${FLAGS} -s ${nmon_sleep_seconds} -c ${nmon_stats_count}"

#
# Stop any existing nmons writing to monitor
#
ps -ef | \
        grep "${nmon_monitor_dir}/${nmon_file_mask}_" | \
        grep -v grep | \
        awk '{ print $2 }' | \
        xargs -i kill -15 {}

#
# start up nmon
#
eval ${cmd}
sleep 10
chmod 644 $out_file

#
# Compress previous nmon data files.
#
print "Compressing previous nmon data files."
sleep 10

        for FILE in $( ls -1 ${nmon_monitor_dir}/${nmon_file_mask}_*csv | grep -v ${out_file} )
        do
                compress ${FILE}
        done


#
# Housekeeping - Keep 30 days.
#
find ${nmon_monitor_dir} -name ${nmon_file_mask}_\* -mtime +30 -exec rm {} \;

exit 0
Performance & Capacity Planning for AIX and Power Systems

Running NMON on the VIO Server
