On Jan 4, 2006, at 3:04 PM, Robert Citek wrote: > $ ping -f -c 1000 127.0.0.1 > > PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data. > --- 127.0.0.1 ping statistics --- > 1000 packets transmitted, 1000 received, 0% packet loss, time 82ms > rtt min/avg/max/mdev = 0.026/0.028/0.098/0.007 ms, ipg/ewma > 0.082/0.028 ms > > $ ping -f -c 1000 localhost > > PING localhost.localdomain (127.0.0.1) 56(84) bytes of data. > --- localhost.localdomain ping statistics --- > 1000 packets transmitted, 1000 received, 0% packet loss, time 785ms > rtt min/avg/max/mdev = 0.029/0.036/0.111/0.010 ms, ipg/ewma > 0.786/0.037 ms
BTW, I forgot to mention that the above was run on a RH9 machine. Look what happens when I run this on FC4: $ ping -f -c 1000 127.0.0.1 PING 127.0.0.1 (127.0.0.1) 56(84) bytes of data. --- 127.0.0.1 ping statistics --- 1000 packets transmitted, 1000 received, 0% packet loss, time 14689ms rtt min/avg/max/mdev = 0.008/0.009/0.030/0.001 ms, pipe 2, ipg/ewma 14.704/0.009 ms $ sudo ping -f -c 1000 localhost PING localhost.localdomain (127.0.0.1) 56(84) bytes of data. --- localhost.localdomain ping statistics --- 1000 packets transmitted, 1000 received, 0% packet loss, time 14364ms rtt min/avg/max/mdev = 0.008/0.009/0.060/0.002 ms, pipe 2, ipg/ewma 14.378/0.009 ms This time, the times are comparable and so are the rtts between the two methods, but the total rtt differs from the times by several orders of magnitude for both methods. BTW, anyone know what ipg/ewma means? Also, what is mdev? Regards, - Robert http://www.cwelug.org/downloads Help others get OpenSource software. Distribute FLOSS for Windows, Linux, *BSD, and MacOS X with BitTorrent _______________________________________________ CWE-LUG mailing list [email protected] http://www.cwelug.org/ http://www.cwelug.org/archives/ http://www.cwelug.org/mailinglist/
