The /dev directory is device files (what you would call drivers in the Windows world). Unix treats EVERYTHING as a file. For example, use the tty command to see what device you're attached to. Then do you can use echo to simply echo back what you want, and redirect it to that device:
Hope that helps a little.
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)
when i used sar -u -f xxxx
i've got the result like the following
...
18Aug200614:45:00 0 1 0 99
18Aug200614:50:00 1 1 0 98
18Aug200622:42:46 1 0 0 98
18Aug200607:00:00 0 0 100 0
18Aug200608:20:48 ... (0 Replies)
Hi All,
I have come through this very nice tool which stores the week performance stats in solaris, but its only stores the stats for 8 in the morning to 5 in the evening. i want to extend the facility to work 24 hrs . Does anyone know how to do that?
Thanks in advance (1 Reply)
I am trying to set up sar on my AIX server. We have been running sar and getting reports on out Linux boxes in the past but would like to try to do the same in AIX. On my Linux i have a sar.sh that looks like this:
#!/bin/bash
LC_ALL=C sar -A -f /var/log/sa/sa27 > /server023.txt
LC_ALL=C sar -A... (1 Reply)
Dear All,
I had added these lines in crontab.
0 * * * 0-6 /usr/lib/sa/sa1
00,15,30,45 * * * 0-6 /usr/lib/sa/sa1
5 18 * * 0-6 /usr/lib/sa/sa2 -s 8:00 -e 18:01 -i 1200 -A
After adding these lines I have to get sar file.
But here I am not getting any files in /var/adm/sa directory in one... (2 Replies)
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)
HI I ma using mpstat and sar commands to check the cpu utilisation
but the results are not matching .I dont understand why thisis happening?
$ sar -u 12 5
Linux 2.6.9-89.35.1.ELhugemem (abcd.efgh.com) 03/07/2013
02:43:16 AM CPU %user %nice %system %iowait %idle... (1 Reply)
Hi All,
I am trying to run sar on a Redhat server during a test I am performing for a couple of hours. I would like to get the sar metrics for every second (instead of the regularly set up 10 minute interval in the cron). What is the most efficient way to do this?
Thanks,
Shahzad (6 Replies)
Discussion started by: sleo
6 Replies
LEARN ABOUT CENTOS
sa2
SA2(8) Linux User's Manual SA2(8)NAME
sa2 - Write a daily report in the /var/log/sa directory.
SYNOPSIS
/usr/lib64/sa/sa2
DESCRIPTION
The sa2 command is a shell procedure variant of the sar command which writes a daily report in the /var/log/sa/sardd file, where the dd
parameter indicates the current day. The sa2 command handles all of the flags and parameters of the sar command.
The sa2 command is designed to be started automatically by the cron command.
EXAMPLES
To run the sa2 command daily, place the following entry in your root or adm crontab file:
5 19 * * 1-5 /usr/lib64/sa/sa2 -A &
This will generate a daily report called /var/log/sa/sardd It will also remove reports more than one week old.
FILES
/var/log/sa/sardd
Indicate the daily report 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), sa1(8), sadf(1)
http://pagesperso-orange.fr/sebastien.godard/
Linux AUGUST 2010 SA2(8)