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SubjectRe: 2.0.3x -- hanging network interfaces
On Oct 22,  1:16pm, Pete Harlan wrote:
} Subject: Re: 2.0.3x -- hanging network interfaces

> > During periods of high load the eth0 card wedges itself. The eth1
> > interface remain active. Downing and upping both interfaces clears

> We have two smc epics in a uniprocessor machine. It isn't that an
> interface hangs, but that an ssh session hangs. You can have two
> sessions through the same card, and only one of them hangs. The hang
> lasts less than a minute, and then the stuck connection flows again
> normally.
>
> Please let me know if you see this sort of behavior with your setup.
> It seems to be less when the two smc's aren't sharing an IRQ, but it's
> still there. This is with 2.0.36-pre10.

I haven't noticed any protocol specific type hangs like this. When we
have interface cards lock they are dead from ICMP on up. They also do
not spontaneously recover but require the interfaces to be downed and
upped.

From preliminary testing on my office workstation which is a dual
PII-300 it would seem that the locks we are seeing are more
troublesome when both cards do share an interrupt. My office machine
has the cards on separate IRQS while the production server has them
sharing an IRQ.

One other thing that I noticed is that the the only errors we see on
the cards are TX errors. On the one occassion when the eth1 interface
stuck there were a string of transmit errors in the logs as well.

> --Pete

Greg

}-- End of excerpt from Pete Harlan

As always,
Dr. G.W. Wettstein Enjellic Systems Development - Specialists in
4206 N. 19th Ave. intranet based enterprise information solutions.
Fargo, ND 58102 WWW: http://www.enjellic.com
Phone: 701-281-1686 EMAIL: greg@wind.enjellic.com
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