Sponsored Content
Full Discussion: Sar during a test
Top Forums UNIX for Advanced & Expert Users Sar during a test Post 302909071 by rbatte1 on Monday 14th of July 2014 08:34:03 AM
Old 07-14-2014
If your process runs for a couple of hours, then the sample interval should reflect this, else you will end up with too much details to make a good judgement from.

If you ask it to sample at 30 seconds for 120 repetitions, you will get an hour's data. I suppose you can graph (with Excel or similar) the data:-
Code:
sar 30 120 > /tmp/my_sar_output

You will need to consider what options to set for whatever you want to measure.

If you bring the sampling down to a single second, or even two seconds then there is a risk that the sar processing will skew your results, a bit like putting a thermometer in a mug of hot coffee will actually cool it a little and tell you what the temperature has now become, not what it was.



Robin
 

6 More Discussions You Might Find Interesting

1. Filesystems, Disks and Memory

sar

We have a script that uses sar -u 1 10 | awk '/Average/ { print ( $2 + $3 ) }' to get the CPU usage of a mutli engine machine. We think we are getting wrong information from the above string. We think it is adding up the total of the 12 engines and reporting back the total not the overall... (5 Replies)
Discussion started by: kevinb
5 Replies

2. HP-UX

Sar

Hey guys in sar -v 5 5 command what is the proc means. (1 Reply)
Discussion started by: sbn
1 Replies

3. Shell Programming and Scripting

Test on string containing spacewhile test 1 -eq 1 do read a $a if test $a = quitC then break fi d

This is the code: while test 1 -eq 1 do read a $a if test $a = stop then break fi done I read a command on every loop an execute it. I check if the string equals the word stop to end the loop,but it say that I gave too many arguments to test. For example echo hello. Now the... (1 Reply)
Discussion started by: Max89
1 Replies

4. AIX

SAR

I am running below script to display last 48 hour data but the output is not displaying heading - AIX eqrdb26u1 1 6 00CFD5E34C00 01/21/10 System configuration: lcpu=8 ent=2.00 mode=Uncapped 22:31:40 %usr %sys %wio %idle physc %entc and footer - Average 25 9 ... (1 Reply)
Discussion started by: noorm
1 Replies

5. Shell Programming and Scripting

How to check weather a string is like test* or test* ot *test* in if condition

How to check weather a string is like test* or test* ot *test* in if condition (5 Replies)
Discussion started by: johnjerome
5 Replies

6. Shell Programming and Scripting

Prefixing test case methods with letter 'test'

Hi, I have a Python unit test cases source code file which contains more than a hundred test case methods. In that, some of the test case methods already have prefix 'test' where as some of them do not have. Now, I need to add the string 'test' (case-sensitive) as a prefix to those of the... (5 Replies)
Discussion started by: royalibrahim
5 Replies
sa1(8)							    BSD System Manager's Manual 						    sa1(8)

NAME
sa1 -- Generate a system activity daily data file. SYNOPSIS
/usr/lib/sa/sa1 [t n] DESCRIPTION
The sa1 command is a shell script used to invoke the system activity data collector, sadc. The binary sample data is collected at intervals t seconds apart, in a loop n times. The binary sample data is written to the standard daily data file, /var/log/sa/sadd where the dd repre- sents the current day of the month. sa1 is intended to be started by cron. EXAMPLE CRON ENTRY
# Starting at 8am collect system activity records # every 20 minutes for 12 hours # 20 minutes = 1200 seconds # 12 hours with 3 samples each hour = 36 loops 0 8 * * 1-5 /usr/lib/sa/sa1 1200 36 # After the 12 hour period, # collect a system activity report 30 20 * * 1-5 /usr/lib/sa/sa2 -A FILES
/var/log/sa/sadd Default daily activity file that holds the binary sampling data. dd are digits that represent the day of the month. SEE ALSO
crontab(1), fs_usage(1), netstat(1), sar(1), sc_usage(1), top(1), vm_stat(1), crontab(5), iostat(8), sa2(8), sadc(8) Mac OS X Jul 25 2003 Mac OS X
All times are GMT -4. The time now is 03:09 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy