sadc is a system data collector - sa1 is a shell script wrapper.
A crontab entry like this:
collects data on the hour and then at 20 & 40 minutes after the hour during business hours 8:00am to 5:00pm
The sa1 output file is stored where your man page says it lives = the file name output by sa1 is usually
sa[nn]
where nn is the day of the month.
Some systems have other implementations of sadc - read your man page.
we have an unix system which has
load average normally about 20.
but while i am running a particular unix batch which performs heavy
operations on filesystem and database average load
reduces to 15.
how can we explain this situation?
while running that batch idle cpu time is about %60-65... (0 Replies)
Hello all, I have a question about load averages.
I've read the man pages for the uptime and w command for two or three different flavors of Unix (Red Hat, Tru64, Solaris). All of them agree that in the output of the 2 aforementioned commands, you are given the load average for the box, but... (3 Replies)
Hello, Here is the output of top command. My understanding here is,
the load average 0.03 in last 1 min, 0.02 is in last 5 min, 0.00 is in last 15 min.
By seeing this load average, When can we say that, the system load averge is too high?
When can we say that, load average is medium/low??... (8 Replies)
Hi,
i have installed solaris 10 on t-5120 sparc enterprise.
I am little surprised to see load average of 2 or around on this OS.
when checked with ps command following process is using highest CPU. looks like it is running for long time and does not want to stop, but I do not know... (5 Replies)
Hello AlL,..
I want from experts to help me as my load average is increased and i dont know where is the problem !!
this is my top result :
root@a4s # top
top - 11:30:38 up 40 min, 1 user, load average: 3.06, 2.49, 4.66
Mem: 8168788k total, 2889596k used, 5279192k free, 47792k... (3 Replies)
Hi ,
I am using 48 CPU sunOS server at my work.
The application has facility to check the current load average before starting a new process to control the load.
Right now it is configured as 48. So it does mean that each CPU can take maximum one proces and no processe is waiting.
... (2 Replies)
how load average is calculated and what exactly is it
difference between cpu% and load average (9 Replies)
Discussion started by: robo
9 Replies
LEARN ABOUT CENTOS
sa1
SA1(8) Linux User's Manual SA1(8)NAME
sa1 - Collect and store binary data in the system activity daily data file.
SYNOPSIS
/usr/lib64/sa/sa1 [ --boot | interval count ]
DESCRIPTION
The sa1 command is a shell procedure variant of the sadc command and handles all of the flags and parameters of that command. The sa1 com-
mand collects and stores binary data in the /var/log/sa/sadd file, where the dd parameter indicates the current day. The interval and count
parameters specify that the record should be written count times at interval seconds. If no arguments are given to sa1 then a single record
is written.
The sa1 command is designed to be started automatically by the cron command.
OPTIONS --boot This option tells sa1 that the sadc command should be called without specifying the interval and count parameters in order to insert
a dummy record, marking the time when the counters restarts from 0.
EXAMPLE
To collect data (including those from disks) every 10 minutes, place the following entry in your root crontab file:
0,10,20,30,40,50 * * * * /usr/lib64/sa/sa1 1 1 -S DISK
FILES
/var/log/sa/sadd
Indicate the daily data file, where the dd parameter is a number representing the day of the month.
AUTHOR
Sebastien Godard (sysstat <at> orange.fr)
SEE ALSO sar(1), sadc(8), sa2(8), sadf(1), sysstat(5)
http://pagesperso-orange.fr/sebastien.godard/
Linux FEBRUARY 2012 SA1(8)