[smokeping-users] FPing alternative

[Israel Brewster]

On Apr 17, 2008, at 11:21 AM, Ben Ragg wrote:

> FPing by default has a timeout of 500ms, most other versions of Ping  
> will
> time out after 1000ms or 2000ms. This is probably why you're seeing  
> the
> difference
>
> I believe you want something like fping -t 2000 (but check the man  
> page)
> and see how you go

Yes, that is the correct syntax for what you are suggesting, and yes,  
I have tried that. Doesn't make a difference. From what I can tell,  
that only applies to the last one (or maybe two, depending on timing)  
pings anyway, since as long as FPing gets a response to a ping while  
it is still running, it will accept it, even if it took two minutes to  
come back. The timeout value basically just says how long it should  
wait after sending the last ping before it gives up and stops  
listening for returns.

-----------------------------------------------
Israel Brewster
Computer Support Technician
Frontier Flying Service Inc.
5245 Airport Industrial Rd
Fairbanks, AK 99709
(907) 450-7250 x293
-----------------------------------------------
>
>
> Ben
>
>
> On Thu, 17 Apr 2008, Israel Brewster wrote:
>
>> On Apr 17, 2008, at 8:58 AM, Peter Kristolaitis wrote:
>>> -----BEGIN PGP SIGNED MESSAGE-----
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>>> Since satellite are typically high-latency, high-loss links, have  
>>> you
>>> considered tweaking the FPing probe's behaviour to take that into
>>> account?
>>>
>>> http://oss.oetiker.ch/smokeping/probe/FPing.en.html
>>>
>>> Specifically look at the hostinterval, mininterval, and timeout
>>> settings....
>>
>> Yeah. As I mentioned in my original post, setting the hostinterval
>> does alleviate, to some extent, the issues I'm seeing- but only if I
>> set it up to 15 SECONDS or higher (not milliseconds), thus resulting
>> in an essentially unusable probe. Ping shows RTA's of around 600 ms
>> typically. I have the timeout set to 2 seconds, which is well more
>> than the latency I typically see, but even so that would only affect
>> the last packet or two, and I never get more than two or three  
>> packets
>> back total, regardless of how many I send out. And ping shows no  
>> loss-
>> just FPing which shows 100% loss after the first few packets (few
>> defined by how high I set the hostinterval for). Thanks for the
>> response though :)
>>
>> -----------------------------------------------
>> Israel Brewster
>> Computer Support Technician
>> Frontier Flying Service Inc.
>> 5245 Airport Industrial Rd
>> Fairbanks, AK 99709
>> (907) 450-7250 x293
>> -----------------------------------------------
>>>
>>>
>>>
>>> Israel Brewster wrote:
>>> | These are WAN lines, typically out in the bush and running over
>>> | satellite links, so I could very easily entertain the notion that
>>> | there is something wrong with the line :) Thus the reason I was
>>> | looking for a standard ping, which does work. According to Tobias,
>>> | though, this is not available. Hmmm.
>>> |
>>>
>>> - --
>>> Peter Kristolaitis
>>> DBA / Code Monkey / General Geek
>>>
>>> OpenPGP/GPG Key available from pgp.mit.edu
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>>
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