Fwd: plugin for iostat readings?

[Esben Bach]

I wrote the original plugin (based on some old code i found on the
internet which was broken), and as stated it only parses the output from
iostat -c. It was written for the iostat shipped with RHEL 4 - and i
later found out that for some reason iostat behaves differently on i.e.
SLED10.
The intent of the plugin was to determine general IO wait time not per
device stuff. Basically its used to give us a history of the IO wait
more than a "warning" mechanism. I just included the other parameters of
 iostat -c for completeness.

It should however be fairly easy to implement commandline switches for
specific devices (or all devices) and parse differently based on this
information. However i have no idea on what basis to determine if the
read/wrtn numbers becomes too high (since i generally do not know what
their EXACT meaning is).

I might consider rewriting the plugin to include these improvements, if
you haven't found another solution. However i am not promising anything!

-- 
Esben

Marc Powell wrote:
> On Feb 24, 2008, at 2:57 PM, Roger wrote:
> 
>> UPDATE ON MY QUESTION
>>
>> On 2/24/08, Roger <Roger at nagioswiki.com> wrote:
>>
> 
>> Shortly after writing this, I found this plugin
>>
>> http://www.ofn.dk/files/software/check_iostat
> 
>> UPDATE:
>>
>> I configured my Perl environment (i.e. installed Perl modules from  
>> cpan, etc), and now when implement this from the commad line, I get  
>> something like this
>>
>> ./check_iostat.pl
>> IOSTAT OK - user 2.01 nice 0.00 sys 3.46 iowait 2.38 idle 92.15 |  
>> iowait=2.38%;; idle=92.15%;; user=2.01%;; nice=0.00%;; sys=3.46%;;
>>
>> this doesn't have /dev/ info that I'd expect to get from iostat,  
>> such as sda
> 
>> What might I be missing?
> 
> Reading the plugin, it's only running and parsing 'iostat -c' to  
> process the cpu utilization report, not the device utilization report.
> 
> 	my $output = `$iostat -c`;
> 
> --
> Marc
> 
> 
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