VMSTAT script / command help

Shell Programming and Scripting
1

Hello all, I know it can be done but don't know the command.

I would like to run vmstat via cron, I don't know a good interval and don't want huge logs but want stats pretty often.

Please someone who uses vmstat via cron let me know what your script looks like.

Thank you

2

We run this everymorning at 12:02 am:

vmstat 60 1440 > /path/to/vmstat.`date +%d`

This will write to a file every minute for 24 hours then create a new file and start over.

We then have another script that summarizes the data and builds graphs and emails them everyday.

3

Can you post or IM the other script too, a graph would be a cool visual feature. I am not sure what is required for it to run and display right but if I can I think id like to use it.

Thanks.

4

Its acutally a collection of several scripts. I import all the vmstat datainto a sql database and then have a whole website that builds the graphs (images) as requested using Perl GD:Graph Link:GD::Graph - Graph Plotting Module for Perl 5 - search.cpan.org

Here is a sample of the graph that is built:

GD:Graph is not a difficult module to use.

5

02 0 * * * (path to script)

Is that correct?

For this to be a script it would be...

#/bin/bash
vmstat 60 1440 > /path/to/vmstat.`date +%d`

Is that right?

Sorry I am somewhat new to scripts and cron...

Thank you for your help.

6

Yes that looks correct.

7

Where would this create the file? In the /path/to/vmstat? If so can I path it to another dir?

8

Put it whereever you want.

in this case it would be in /path/to/ with a filename of vmstat.01 (01 = date)

9

OK I thought so, sorry for being over cautious.

One more question...
I manually ran it to test and I got a file name of "vmstat.date +%d"

What in the code did I miss?

I have it like such...
vmstat 60 1440 >/home/user/vmstat/vmstat.'date +%d'

10

you need to use the backtick (same key as ~) - not single quote

From:

vmstat 60 1440 >/home/user/vmstat/vmstat.'date +%d'

To:

vmstat 60 1440 >/home/user/vmstat/vmstat.`date +%d`

edit: to include the code

11

Ahh yup that did it... thank you so much for your help this is exactly what I needed.

12

Hi,

If you're interesting in drawing charts from vmstat log files,
you should try vmstax. You upload your log files, the charts
are built and then you export them as image(png).

[http://www.michenux.net/vmstax-build-vmstat-charts-1.html]Vmstax | Michenux

:wink: