Howto install sar & ksar system activity info in centos and Fedora

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The sar command collect, report, or save UNIX / Linux system activity information. It will save selected counters in the operating system to the /var/log/sa/sadd file. From the collected data, you get lots of information about your server:

1. CPU utilization
2. Memory paging and its utilization
3. Network I/O, and transfer statistics
4. Process creation activity
5. All block devices activity
6. Interrupts/sec etc.

commands  explain

1. sar : Displays the data.
2. sa1 and sa2: Collect and store the data for later analysis. The sa2 shell script write a daily report in the /var/log/sa directory. The sa1 shell script collect and store binary data in the system activity daily data file.
3. sadc – System activity data collector. You can configure various options by modifying sa1 and sa2 scripts. They are located at the following location:
   • /usr/lib64/sa/sa1 (64bit) or /usr/lib/sa/sa1 (32bit) – This calls sadc to log reports to/var/log/sa/sadX format.the  sar  comand  a  a  prt  of this tool sysstat,  to install it

Sar is apart of sysstat tool, you can install it using the following command :

yum install syssstat

Now  make  this  modification to  generate  a file  every 10 minutes

edit /etc/cron.d/sysstat

or
vi /etc/cron.d/sysstat

*/10 * * * * root /usr/lib/sa/sa1 -I -d 1 1
# generate a daily summary of process accounting at 23:53
53 23 * * * root /usr/lib/sa/sa2 -A 

For systems with 64bit change lib with lib64

For more commands:  man sar  for  help

Install a  graffical interface for sar  (Ksar)

“kSar is a java application that graph your sar data. It can graph sar text output from Solaris,Linux,AIX,HPUX,Mac OS/X. It also permit to export data to PDF/JPG/PNG/CSV.” 

1- Download  ksar from  http://sourceforge.net/projects/ksar/

2- Unzip the  file, then cd the directory where you extracted the files and   and  run the  script:

sh run.sh

3-Now you need to grab sar command statistics, type the following command to get statistics:

home-server# LC_ALL=C sar -A > /opt/sar.data.txt

load from test  in /opt directory

After importing the logs  and  be  converted  to grafs , you  wil got  some  thing like  this

enjoy

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