[Nagiosplug-devel] Replacement Perl framework files

[Howard Wilkinson]

Karl,

My apologies for the speeeling mistook, I thought I had fixed all of 
these. Will send in a new version (and patches later today).

I am running a production framework using these systems and yes the 
compile time does predominate on the plugin execution (but I think if 
the figures I am getting out of Perl are right then it did anyway). Key 
thing is are the module files in the filing system cache!

Overall monitoring load has not increased by any measurable amount, with 
each probe running every 5 minutes (Nagios reports 35.1% of checks 
completed within 5 minutes and 100% in 15 minutes) . Check latency has 
been decreased slightly if you believe the figures but is within the 
error margin. Some of this will be from the few small gains made by code 
getting rewritten to be simpler once the argument parsing is removed 
from the main flow.

My later plugin attempt, which are still to be sent out, result in 
generally smaller and easier to understand (I think) code.

The biggest overhead is the pre-defined Parameters that are exported for 
convenience from Plugin::Parameter. I am thinking on moving these to 
another module set, but then we are into more files for less code. I 
could of course adopt a shorter naming convention, but I had hoped that 
the efficiency of the Perl parser/lexer would make this unnecessary. ePN 
should win big with this I would have thought but cannot test this yet, 
as I need to get our distributed framework up on more machines and need 
the auto learning facility urgently.

I note you comment about the `human' readable output in the check_game 
patch and will abandon this approach (except for internal use) for now 
until I can duplicate the perl library approach with the C framework.

Will hammer on the code a bit more later today to get some error 
reporting integrated and write a surrounding document to describe the 
use of the framework once it is fully ready.

Regards, Howard.

Karl DeBisschop wrote:

>On Tue, 30 Mar 2004 19:52:35 +0100
>Howard Wilkinson <howard at cohtech.com> wrote:
>
>  
>
>>I distributed the wrong files for the perl framework. Here are the
>>fixed and working ones I should have sent out!.
>>    
>>
>
>A couple of comments.
>
>First, I do appreciate that this framework does a great job of
>providing a large base of usable code. Kudos. I would imagine there's
>more than a few hours of work in there.
>
>One trivial issue - you have 'warrenty' for 'warranty' - obivously a
>lesser concern in the variable/method names but it is also present on
>the output. If 'warrenty' is a non-US variant spelling, I'm not familiar
>with it. Can that be changed?
>
>What I do really wonder about is the overall weight of these modules -
>there are 70 KB of modules for plugins that used to weigh in at only 8
>KB to begin with. If embedded perl does what it's supposed to, this all
>gets compiled only once, I hope. But if a user is not running embedded
>perl, the sheer weight of code could have real performance impacts.
>
>So overall, I'd like to move to this new frameowrk if the
>potential performance impacts can be evaluated and found to be managable
>in some way.
>
>And thanks for this effort, it clearly is a step forward.
>
>--
>Karl
>  
>

-- 
Howard Wilkinson
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