Hi all, I have been playing with the timing of fping to find out how many hosts can practically be pinged in a 5 minute interval.
-q = quite -B = backoff when a timeout occurs (multiplier of time) -i = minimum time between sending each ping -C = number of pings to send to each host -b = packet size -t = timeout (ms) for each host -p = minimum time between pings to single host (ms) The results below was using the following commandline options fping -q -B 1.0 -i 1 -r 1 -C 20 -b 56 -t 400 -p 500 -i Total Time Time Between pings 1 1:46 ~5 seconds 5 1:46 ~5 seconds 10 3:25 ~10 seconds 20(default) 5:06 ~15 seconds Reducing the count from 20 to 10 results in: -i Total Time Time Between pings 5 0:56 ~4.5 seconds If we take the setting of -i=5 from the 1st table, 500 ICMP packets are being sent every ~5 secs. So although the time specified between each packet is 5msec, the actual time given some overheads is 10msec (5000/500). The mixture of hosts I polled were 50% up and 50% down. If you tweak -i to say 5 msecs (assuming your network can support this...through put etc...) then it is feasable you could poll ~1500 hosts in a single 5 minute interval. If you were polling 100% hosts that were up this might double (3000). Comments? Colin -- Unsubscribe mailto:[EMAIL PROTECTED] Help mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/smokeping-users WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
