-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Le 17/09/2013 20:15, Patrick W. Gilmore a écrit : > On Sep 17, 2013, at 12:11 , Martin T <[email protected]> wrote: > >> Thanks for all the replies! >> >> >> Nick, >> >> counting traffic on inter-switch links is kind of cheating, isn't it? >> I mean if "input bytes" and "output bytes" on all the ports facing the >> IX members are already counted, then counting traffic on links between >> the switches in fabric will count some of the traffic multiple times. >> >> >> >> Patrick, >> >> how does smaller sampling period help to show more traffic volume on >> switch fabric? Or do you mean that in case of shorter sampling periods >> the traffic peaks are not averaged out and thus peak in and peak out >> traffic levels remain higher?
Hi, Good reading, to get an idea: https://www1.ethz.ch/csg/people/dimitroc/papers/p95pam.pdf Section 3, mainly. Cheers, mh >> > > The graph has a bigger peak, and DE-CIX has claimed "see, we are bigger" using such graphs. Not only did they not caveat the fact they were using a non-standard sampling method, they have refused to change when confronted or even say what their traffic would be with a 300 second timer. > -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with undefined - http://www.enigmail.net/ iEYEARECAAYFAlI45K0ACgkQZNZ/rrgsqaeSAQCfR93/ksBGa1KRW6P6zLR2cRwG 2fEAnRlZMtamameFoQgVdYZwTKD7Lb1b =UVol -----END PGP SIGNATURE-----
