[smokeping-users] Bug: constant erroneous packet loss

[Russell Dwarshuis]

You are probably losing the first ping for reasons unknown.

The FPing probe has blazemode to discard the first ping, try that.  http://oss.oetiker.ch/smokeping/probe/FPing.en.html


-Russell Dwarshuis

----- Original Message -----
From: "Anonymous Internet User" <aiu001 at wiredsage.com>
To: smokeping-users at lists.oetiker.ch
Sent: Tuesday, September 2, 2014 10:36:59 AM
Subject: [smokeping-users] Bug: constant erroneous packet loss

I'm running smokeping version 2.6.8 on a Raspberry Pi. 

$ ping -c 500 24.74.252.129 | grep -A 3 statistics 
--- 24.74.252.129 ping statistics --- 
500 packets transmitted, 500 received, 0% packet loss, time 499746ms 
rtt min/avg/max/mdev = 7.954/14.005/56.465/7.723 ms 

I have no packet loss when I use ping. 

When I use SmokePing, I get the following graph: 


packet loss: 20.00 % avg 20.00 % max 20.00 % min 20.00 % now 

One out of every five packets are reported as missing. I had changed the fping frequency from 3 (where I was getting a loss of 1 in 3, or 33.33%) to 5 (where I was getting a loss of 1 in 5, or 20.00%). 

At first the reported loss was only to a ping to google. Then I stopped the daemon, cleared the rrd data, restarted SmokePing, and the "loss" went to the first hop outside of my router. I repeated the process and now the "loss" is on the second hop outside of my router. 

Bug? Is it known? Is there a patch? 

Thanks in advance, 
Andrew 

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