On Sun, 24 Jan 1999, Peter Wemm wrote: > > Oh, one other thing that occurred to me.. Under 4.0-current, I regularly > (ie: within 30 seconds of boot) get if_de tranmitter underflows. My > console corruption was happening at the instant that de0 was being > configured with ifconfig. exmh is running to a remote display over that > de0 interface. > > Under Jan 16 3.0-current, I do not get that tranmitter underflow..
One of my alpha boxes has always got a few of these errors when it first transmits a largish packet. It happened under NetBSD and FreeBSD since I bought the machine (about June last year I think). Andrew Gallatin has seen similar errors on OSF1. I think its harmless. > > The only thin I can think of about if_de that's unusual that is VM related > (apart from the complexity of the code) is that it uses configmalloc(). I > wonder if this is somehow setting the scene for the later failures? It's > certainly suspicious that has done strange things when being ifconfig'ed, > including things like trashing the serial console on no less than a dozen > occasions. I can't see where if_de is using contigmalloc(). I thought the bus_dma code in there wasn't used on FreeBSD. -- Doug Rabson Mail: d...@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message
