Increase the efficiency of passive checks

[Andrew_Hoying at blm.gov]

Interesting, but not quite what I'm looking for. The problem with the named
pipe is that while it is a zero byte file, it does have a limited space in
it's buffer, so I can only write that much in to it before I have to wait
for it to be read by Nagios. Adding another queue on top of that would not
speed up the process, I don't believe, as I am already queueing and writing
to the named pipe as fast as Nagios reads it.

Andrew Hoying



                                                                           
             Jason Martin                                                  
             <jhmartin at toger.u                                             
             s>                                                         To 
                                       Andrew_Hoying at blm.gov               
             04/09/2004 12:42                                           cc 
             PM                        nagios-users at lists.sourceforge.net  
                                                                   Subject 
                                       Re: [Nagios-users] Increase the     
                                       efficiency of passive checks        
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           
                                                                           




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A named pipe doesn't have a 'size' per se, it is a 0-width file. However I
think you could use something like 'sweeper' (on the nagios extras page)
to queue up the data for that socket so that Nagios will read larger
chunks of it at a time.

- -Jason Martin

On Fri, 9 Apr 2004
Andrew_Hoying at blm.gov wrote:

>
>
>
>
> Hello,
>
> I'm currently running a Nagios server which is processing a little over
> 2000 passive checks every 10 minutes. I know the server has the memory
and
> processing power to handle that many checks in half that time, however
the
> bottle neck seems to be the size of the named pipe file and the speed at
> which it is read. I have Nagios set to check the file every second, which
> works fine, and it processes around 5 passive checks a second, however
the
> server Nagios is running on is still only using around 4% of it's
> processing power and it's disk access is nominal. What can I do to
increase
> the size of the named pipe, or move to shared memory, a Unix socket, or
> some other method of accepting passive checks that would speed it up
> without significantly rewriting Nagios? Does anyone have a patch for 1.2
> that would solve this problem? Is 2.0 significantly better in this
regard?
>
> Thank you,
> Andrew
>
>
>
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