[ltp] a30 performance issue (related to ethernet?)

[Matt Graham]

From: Richard Neill <rn214@hermes.cam.ac.uk>
> >  have something to  do with the built-in ethernet device, because =

> > bringing down the network  interface (eth0) fixes everything =

> > immediately. This kernel message is  scattered all over my logs:
> > "e100: eth0: e100_watchdog: link up, 10Mbps, half-duplex"

Hm.  Never seen this happen myself.

> This reminds me of an issue I had with the A22p dropping the network =

> every few minutes. My fix was to remove the e100 module (which is =

> deprecated, and iirc unmaintained + buggy) and use the eepro100 module =

> instead. Does that help?

I think this is backwards.  In the 2.6.12 source, at least, eepro100's la=
st
revision entry in the history is in 2000, while e100's got entries for 20=
05. =

Also, my A22p running kernel 2.6.10 will not work with eepro100, and it w=
orks
just fine with e100.

> Look at /proc/interrupts and see whether you are getting a vast =

> number on that device.

Yeah, that too.  One more thing to check is the cabling.  If your cabling=
 is
marginal, signal quality can go way down for all kinds of random reasons,=
 like
people stepping on the cable or something.



-- =

Matt G / Dances With Crows
There is no Darkness in Eternity/But only Light too dim for us to see
"I backed up my brain to tape, but tar says the tape contains no data....=
"