[smokeping-users] patch candidate for FPing.pm probe

cwitte cwitte at xmlhq.com
Sat Dec 11 17:44:37 MET 2004

I am new to smokeping, and am a very happy user.  However, when I first 
installed smokeping running the FPing probe, I was confounded by 
smokeping reporting "no packet loss" for periods of known packet loss.

Upon further investigation, I found that the fping probe was sending 
all of it's pings out at the beginning of the period, and the 
connection went unmonitored for the duration of the period.  This was 
verified with ethereal and ps.  (ps shows the fping command quits 
shortly after being launched).

I modified FPing.pm to calculate the delay between ping packets based 
on the configured period length, so that the pings would be sent over 
the duration of the period.
(Added the -p parm to fping with a calculated parm).
The modified probe is attached as FPing_delay.pm, and can be run along 
side of FPing.pm for verification/comparison, etc.

If this change is acceptable, I think it would be good if it were 
included in the distributed FPing.pm probe.

Chris Witte

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