Date: Sun, 13 Apr 2003 11:59:50 -0300 From: Fred Souza <fred@storming.org> To: Michael McGoldrick <mmcgoldrick@linuxdriven.net> Cc: current@freebsd.org Subject: Re: Ping oddity Message-ID: <20030413145949.GA62921@torment.storming.org> In-Reply-To: <20030413125837.GA30508@uriel.fakedomain.net> References: <20030413125837.GA30508@uriel.fakedomain.net>
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--envbJBWh7q8WU6mo Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > Whenever something else is using the link (fetch, Mozilla etc.)=20 > When nothing else is touching the network, ping is fine: > 64 bytes from 216.239.51.99: icmp_seq=3D120 ttl=3D51 time=3D650.374 ms >=20 > Any idea what could be causing this? I noticed the same behavior here, but didn't link it to other processes using the network alone. In fact, I'm trying to reproduce it right now, but Phoenix, fetch, fetchmail and SMB shares do not seem to interfere with ping. It *does* happen, though, if I ping another PPP connection and other processes use the network, and yet it does not occur everytime. I also notice that the few packets that get replied while that strange behavior takes place, have much higher timestamps than the other ones (i.e, I'm ping'ing a connection that's got a RTT of 300ms to me; when I make other processes to use the network, in the middle of those erroneous packets I see a few replies of time =3D 1500+). Weird to see that if at the same time I ping the very same host from another box on my network, using the same link, the timestamps don't jump like this. FreeBSD torment.storming.org 5.0-CURRENT FreeBSD 5.0-CURRENT #0: Sat Apr 12 01:50:45 BRT 2003 nazguul@torment.storming.org:/usr/obj/usr/src/sys/torment i386 I'm using ipfw too, and my connection is handled by userland PPP + netgraph. Fred --=20 "The basic notion underlying USENET is the flame." -- Chuq Von Rospach --envbJBWh7q8WU6mo Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (FreeBSD) iD8DBQE+mXtlZNmEsrl+ROERApJ/AJ9cUkdbG4jv0vHwmGLxY1lVdNjZEgCgmpnj g3YYrnsQd+KuOTqgg+LWeVA= =G++9 -----END PGP SIGNATURE----- --envbJBWh7q8WU6mo--
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