Originally posted by: michaelsteele

How to Launch Sar automatically at boot up -or-cronjob
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Originally posted by: dukessd

stick it in your inittab or crontab, simple!
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Originally posted by: SystemAdmin

Hi,

On the user adm, there is a crontab with all entries not apply.
You can choose an action
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Originally posted by: michaelsteele

Duke / Biblio:

Keeping a month of sar data in /var/adm/sa is a little more complicated than executing a 5 minute sar command. The report names change from day to day.

So if you want full credit I'llneed to see something more than a six word comment.
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Originally posted by: SystemAdmin

Hi

Example for 1 month of history of performances collects with sar

1. su - adm

$ crontab –l = is default entries in AIX : all entries are disabled (#)

#=================================================================

1. SYSTEM ACTIVITY REPORTS
2. 8am-5pm activity reports every 20 mins during weekdays.
3. activity reports every an hour on Saturday and Sunday.
4. 6pm-7am activity reports every an hour during weekdays.
5. Daily summary prepared at 18:05.

#=================================================================
#0 8-17 * * 1-5 /usr/lib/sa/sa1 1200 3 &
#0 * * * 0,6 /usr/lib/sa/sa1 &
#0 18-7 * * 1-5 /usr/lib/sa/sa1 &
#5 18 * * 1-5 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 3600 -ubcwyaqvm &
#=================================================================

Modify the 2 entries in this crontab ( without #)

0 0-23 * * * /usr/lib/sa/sa1 300 12 &
48 23 * * * /usr/lib/sa/sa2 -s 0:00 -e 23:46 -i 900 -ubcwyaqvmr &

First line, it says that every hour, were recorded every 300 seconds (5 minutes) and 12 times (300s*12 = 3600s = 1h) the activity system can be seen with sar with all these options in a file SAXX (xx = No. days).
You can modify the parameters
Second line, at 11:48 p.m., is generated from binary files created, a file with daily sarxx xx = No. of days from 00 to 31, by default, all files in the directory /var/adm/sa.

Moreover, keeping only the binaries + summary of 31 days in the /var/adm/sa/, the default script /usr/lib/sa/sa2 keeps only 7 days.
So changing the script sa2 (via root)

…..
DATE=`/usr/bin/date +%d`
RPT=/var/adm/sa/sar$DATE
DFILE=/var/adm/sa/sa$DATE
ENDIR=/usr/sbin
cd $ENDIR
$ENDIR/sar $* -f $DFILE > $RPT
/usr/bin/find /var/adm/sa \( -name 'sar*' -o -name 'sa*' \) -mtime +7 -exec /usr/bin/rm {} \;

with:
/usr/bin/find /var/adm/sa \( -name 'sar*' -o -name 'sa*' \) -mtime +31 -exec /usr/bin/rm {} \;
Sample files under /var/adm/sa

1. cd /var/adm/sa
2. ls -l

total 1448
-rw-r--r-- 1 adm adm 350326 Apr 22 23:55 sa22
-rw-r--r-- 1 adm adm 366396 Apr 23 09:25 sa23
-rw-r--r-- 1 adm adm 18423 Apr 22 23:48 sar22

The file contains information collected sar22 the day before in ASCII format and searchable via the commands vi or a normal cat (in the form of stanzas per hour with performance statistics, buffer, etc. ..), but the details are displayed increments of 15 minutes

You can then go back on a recording via the sar command
sar-f sa22 (default performance, but can be used with the options of sar-u |-b ... `)
See man sar

A final amendment, only root can use the sar command with argument, which disables other users.
$ sar 1 10
sar: The file access permissions do not allow the specified action.
To allow access to users, you must modify the rights of the file /usr/lib/sa/sadc

1. chmod o+x /usr/lib/sa/sadc

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Originally posted by: michaelsteele

I don't see anywhere to assign points for the solution?
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