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Top Forums Shell Programming and Scripting Performance problem with my script ...suggestions pls Post 302169864 by vivsiv on Friday 22nd of February 2008 04:06:14 PM
Old 02-22-2008
Question Performance problem with my script ...suggestions pls

Hi ,
I have included my script below, pls read thro this req. I want my script to run for every hour , the problem is I CANNOT USE CRONTAB which is prohibited inside the company. My script does what it is supposed to do (to determine the memory and then send a email if it crosses a certain limit) . So I put a while loop which is always true so that the script can run forever using nohup but the problem is that this script if run using nohup and while true condition seem to REALLY take up almost 1 full cpu from the server (our server is a 3 cpu box) ..do u guys have any idea how to make this less CPU intensive one..??
_____ Script ----
#!/bin/ksh
set -A proc $x
x=$(top| grep sieb |awk '{print $6}'|sed 's/\M//')
print $x
HOME=/users/home/con
TEMPDIR=$HOME
FILE=mail.log
set -A proc $x
print "Number of sieb process currently running is ${#proc[@]}"
#assigning the total number of processes to a var
procnum=${#proc[@]}
print ${proc[1]}
#to make the script run contineous im putting a while [true]
while [ true ]
do
#intializing a counter var to be in loop
i=0
while [ $i -lt $procnum ]
do
echo 'Start checking '
if [ ${proc[i]} -gt 1420 ]
then
echo Process Sieb seem to occupy more memory about ${proc[i]} MB so will sleep for 10mins before i do next check
sleep 600
typically 62% means the overall emory is 83%
cp=$(prstat -t 1 1 | awk '/sad/{print $5;}'|sed 's/\%//')
echo $cp is the % MEM
if [ ${proc[i]} -gt 1420 ] && [ $cp -gt 61 ]
then
echo Sieb seem to occupy more memory so will send a email
/usr/bin/mailx -s "ALERT: process memory on rog is high " "con@yahoo.com" < $TEMPDIR/$FILE
sleep 3600
fi
fi
print ${#proc[$i]}
((i=i+1))
echo $i
done
done

Last edited by vivsiv; 02-22-2008 at 05:06 PM.. Reason: corrections
 

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ptree(1)																  ptree(1)

NAME
ptree - print process trees SYNOPSIS
/usr/bin/ptree [-a] [-c] [-z zone] [pid | user] ... ptree prints the process trees containing the specified pids or users, with child processes indented from their respective parent pro- cesses. An argument of all digits is taken to be a process-id, otherwise it is assumed to be a user login name. The default is all pro- cesses. The following options are supported: -a All. Print all processes, including children of process 0. -c Contracts. Print process contract memberships in addition to parent-child relationships. See process(4). This option implies the -a option. -z zone Zones. Print only processes in the specified zone. Each zone ID can be specified as either a zone name or a numerical zone ID. This option is only useful when executed in the global zone. The following operands are supported: pid Process-id or a list of process-ids. ptree also accepts /proc/nnn as a process-id, so the shell expansion /proc/* can be used to specify all processes in the system. user Username or list of usernames. Processes whose effective user IDs match those given are displayed. Example 1: Using ptree The following example prints the process tree (including children of process 0) for processes which match the command name ssh: $ ptree -a `pgrep ssh` 1 /sbin/init 100909 /usr/lib/ssh/sshd 569150 /usr/lib/ssh/sshd 569157 /usr/lib/ssh/sshd 569159 -ksh 569171 bash 569173 /bin/ksh 569193 bash The following exit values are returned: 0 Successful operation. non-zero An error has occurred. /proc/* process files See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ |Interface Stability |See below. | +-----------------------------+-----------------------------+ The human readable output is Unstable. The options are Evolving. gcore(1), ldd(1), pargs(1), pgrep(1), pkill(1), plimit(1), pmap(1), preap(1), proc(1), ps(1), ppgsz(1), pwd(1), rlogin(1), time(1), truss(1), wait(1), fcntl(2), fstat(2), setuid(2), dlopen(3C), signal.h(3HEAD), core(4), proc(4), process(4), attributes(5), zones(5) 11 Oct 2005 ptree(1)
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