[smokeping-users] Curl Graphs blank?

[Peter Kristolaitis]

The Curl probe has a 'forks' option which determines how many requests 
are run concurrently.  Depending on available processing power, 
bandwidth, etc, you may be able to turn that up some so that more probes 
are run at the same time.  You just have to be careful not to overload 
your available bandwidth, or you'll artificially inflate response times. :p

Your lowering of the timeout will probably help significantly as well, 
at least if it's often the case where hosts take longer than that to 
respond.

- Peter

Pete Hoffswell wrote:
> Hi Peter and list - 
>
> My log says:
>
> Sep 12 10:29:50 networker3 smokeping[23449]: Curl: WARNING: smokeping took 430 seconds to complete 1 round of polling. It should complete polling in  300 seconds. You may have unresponsive devices in your setup. 
>
> How about that!  You called it right, Peter.
>
> I see that
>
> Sep 12 10:19:13 networker3 smokeping[23449]: Curl: probing 21 targets with step 300 s and offset 160 s.
>
>
> I do not have offset configured for curl, and expect it must be doing a random offset.  I will configure the offset for 0% to get them started right away.  I've also lowered the curl timeout to 5 seconds.
>
> I would like to stay in the 300 second step if possible.
>
>
> Any other suggestions?  I have 95 rrd files in my smokeping directory tree.  It's not huge....
>
>
> Thanks for the quick response.  
>
>
>
> Pete Hoffswell                 616-732-1101 (x1101)
> Network Manager                616-510-1198 (Mobile)
> IT Services                    pete.hoffswell at davenport.edu
> Davenport University           http://www.davenport.edu
> http://www.youtube.com/watch?v=jyV_zLKth3I
>
>
>   
>>>> <smokeping-users-bounces at lists.oetiker.ch> 9/12/2007 11:50 AM >>>
>>>>         
> Hi Pete;
>
> When an RRD graph is blank, it means null/no data (meaning no data at 
> all was entered, like a NULL in a database, rather than a zero). With 
> SmokePing, typically this would occur if the daemon was turned off 
> during that time period, or e.g. if the probe crashed.  One other 
> possible cause would be if SmokePing is not able to complete all probes 
> within the allotted cycle time (e.g. if it takes 330 seconds to run all 
> of the probes, but you are on a 300 second scan cycle, then some hosts 
> will get missed).  Check your SmokePing log files to see what's going on 
> -- it will warn you if cycles are overlapping.
>
> The other thing to do is correlate the information against something 
> else.  For example, if you're monitoring servers and there is a blank 
> spot in SmokePing, did the server actually go down during that time?  
> Are there helpdesk tickets for that system in that timeframe?   If the 
> server WAS down but the SmokePing graphs are blank, it could be a bug in 
> the Curl probe.  If the servers were up at those times, it's more likely 
> the problem described in my first paragraph.
>
> Cheers,
> - Peter
>
>
> Pete Hoffswell wrote:
>   
>> Good day!
>>  
>> I have been encountering blank sections within trending charts on some 
>> CURL probes.  I would have expected them to go red, if there was no 
>> response.
>>  
>> What does this mean? I cannot find in the documentation or searching 
>> the list.
>>  
>> I've posted a representative graph here:
>>  
>> http://www.flickr.com/photos/petehoffswell/1366734130/ 
>>  
>> Anyone know why this happens? 
>>  
>>
>> Pete Hoffswell                 616-732-1101 (x1101)
>> Network Manager                616-510-1198 (Mobile)
>> IT Services                    pete.hoffswell at davenport.edu 
>> <mailto:pete.hoffswell at davenport.edu>
>> Davenport University           http://www.davenport.edu 
>> <http://www.davenport.edu/>
>> http://www.youtube.com/watch?v=jyV_zLKth3I 
>> ------------------------------------------------------------------------
>>
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>>   
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>
>
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