Subject: Re: Using a DEC 21140-AC card in non-promiscuous mode gives awful throughput
To: None <tech-net@NetBSD.ORG>
From: Michael C. Richardson <mcr@sandelman.ottawa.on.ca>
List: tech-net
Date: 07/12/1998 16:11:42
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>>>>> "Michael" == Michael Graff <explorer@flame.org> writes:
Michael> This is a bug that _still_ exists in the de driver for NetBSD. Somehow,
Michael> the card is getting stuck in OACTIVE unless tcpdump (or any other BPF
Michael> using program) is listening.
Michael> Hmm. Try running dhcpd <G>
Would this also affect a 1.3.2 machine with:
de0 at pci0 dev 20 function 0
de0: interrupting at irq 11
de0: SMC 21041 [10Mb/s] pass 2.1
de0: address 00:e0:29:11:0e:72
de0: enabling 10baseT port
...
de0: enabling 10baseT port
de0: abnormal interrupt: receive process stopped
My server stops now and then --- often under high network activity, and
the usual sympton that I can see is that there are no network buffers
available for even a ping. netstat -m doesn't show anything unusual
though. (No requests for buffers denied:
0 requests for memory denied
0 requests for memory delayed
0 calls to protocol drain routines
I was initially concerned about the "abnormal interrupt" message, but the
card seemed to work fine, so I didn't worry at first.
:!mcr!: | Network and security consulting/contract programming
Michael Richardson | Firewalls, TCP/IP and Unix administration
Personal: mcr@sandelman.ottawa.on.ca. PGP key available.
Corporate: sales@sandelman.ottawa.on.ca.
ON HUMILITY: To err is human, to moo bovine.
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