[SOLVED] Server Stats History

thbaig · 01-05-2012, 07:03 AM

Hi,
OS = Fedora Core, CentOs 5

I am in process to install some applications on my servers.
But before doing that i want to know the load of my current system.

I want to review the last 7-10 days stats for consumption of CPU,Memory,Network and disk IO.

Is there some built in stat mechanism exist or I have to install some software ?

If software, kindly recommend .

thank you

deep27ak · 01-05-2012, 07:43 AM

Code:

#top
(this will show you the running services with the amount of CPU and memory utilized)

press shift+m

it will show you services using maximum memory

press shift+p
it will show you services using maximum CPU

Code:

#vmstat
This will show you statistics of your CPU and memory

Code:

#free -m
this will show your RAM size and swap memory both free and used

or if you want to download additional tool then look for "collectl"

for network

Code:

#netstat -ntlp

for additional options

Code:

#man netstat

for HDD info

Code:

#df -h
#fdisk -l

thbaig · 01-05-2012, 07:49 AM

thank you deep27ak
but as I mentioned that I want to get stats over specific period.
How can I do so ?

deep27ak · 01-05-2012, 08:09 AM

well I don't think there is any such package or tool by default, you might have to download

here are few which I found might be helpful

http://www.thegeekstuff.com/2011/03/sar-examples/
http://www.thegeekstuff.com/2011/12/...itoring-tools/

thbaig · 01-05-2012, 10:09 AM

thank you deep27ak for this wonderful info

grim76 · 01-05-2012, 01:31 PM

I think sar is part of the sysstat package in centos and fedora. I use that to keep history on the servers. Keep in mind that it will only keep history from when you install it and it will only keep 7 days by default if I recall correctly.

markseger · 01-07-2012, 07:36 AM

SAR saves a month's worth of data in a continuously rolling set of files with the day of the month in their name. Only problem is by default it only samples once every 10 minutes which is pretty useless. At least change it to a minute or even less.
-mark

thbaig · 01-24-2012, 05:27 AM

Hi,
I have successfully configured sar. now I have stat files for over one week.

I found Ksar to read and display sar file, but the problem is ,it only read a single file.

Can I extract 1 week files once to have weekly analysis ?

Is there some tool that I can use to analyze multiple sar files at once to have over x time analysis?

deep27ak · 01-24-2012, 05:42 AM

I use vnstat for monitoring my box with respect to days and months but it will start monitoring from the day you install the package

follow these pages for more help
http://humdi.net/vnstat/
http://linux.softpedia.com/get/Syste...at-13934.shtml

thbaig · 01-24-2012, 05:50 AM

thank you Deepak.
But I have one week stats now with sar

so for vnstat, i have to wait for one more week.

Can you please tell me how can I utilize my multiple sar files ?

deep27ak · 01-24-2012, 06:08 AM

I am not very sure how to extract a week analysis as I don't use this much

but you can use ksar which will give you a graphical sar graph of all the process and services running including the memory and cpu utilization

you can check this link if you can find anything helpful

http://www.cyberciti.biz/tips/identi...with-ksar.html

grim76 · 01-24-2012, 08:13 AM

You can dump multiple files into one file.

Code:

LC_ALL=C sar -A > /tmp/sar.data.txt

You can specify files by using the -f option for sar.

Code:

LC_ALL=C sar -A -f /var/log/<sar files location>/<sar file name> >> /tmp/sar.data.txt

Then all you need to do is copy the file to where you can use ksar to create the graphs.

thbaig · 01-24-2012, 09:50 AM

thank you grim.

Quote:

Originally Posted by grim76

You can dump multiple files into one file.

Code:

LC_ALL=C sar -A > /tmp/sar.data.txt

You can specify files by using the -f option for sar.

Code:

LC_ALL=C sar -A -f /var/log/<sar files location>/<sar file name> >> /tmp/sar.data.txt

Then all you need to do is copy the file to where you can use ksar to create the graphs.