On Mon, 31 Jul 2000, Joseph Eggleston wrote: > I'm using a laptop with two PCMCIA 3Com ethernet cards to forward > packets between two networks in a testbed. It seems to work, but quite > frequently I get errors like the following in the log: > kernel: eth0 interrupt(s) dropped! > kernel: eth0: Too much work in interrupt, status 2091. (sometimes it's > status 2011) > and similar ones for eth1. > > There are enough of these errors that within a few minutes dmesg is full > of them. Any ideas on what causes this? Is this something I should be > worried about? Are these really PCMCIA cards, and not CardBus? If so, that's your problem: PCMCIA is slow. Very slow. It's usually ISA connected, and thus even slower than ISA bus cards. The driver is falling behind removing packets from the card, and is giving up to let the system do a little work before resuming. Donald Becker becker@scyld.com Scyld Computing Corporation http://www.scyld.com 410 Severn Ave. Suite 210 Beowulf Clusters / Linux Installations Annapolis MD 21403 - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.rutgers.edu
