Subject: wd and tlp/de (Re: tlp, twe & ld )
To: None <>
From: Dieter <>
List: port-alpha
Date: 08/27/2004 20:37:31
Ray Phillips writes:

> tlp0: transmit underrun; new threshold: 96/256 bytes

Sounds similar to a problem I've been seeing.

164lx, 533 MHz, 256MB, 2 tulip boards (21040)

I recently added a Maxtor 250GB ATA drive to a previously all SCSI system.
wd0 is working fine. but the tulips have major problems.
Network traffic freezes when there is activity to wd0.
Sometimes xterm windows go away.

Seems to be slightly better using the de driver instead of tlp,
but still very bad.

Tons of:

	de1: abnormal interrupt: transmit underflow

also seeing

	com1: 1 silo overflow, 0 ibuf floods
	com1: 6 silo overflows, 0 ibuf floods

(com1 has a POTS modem)

I wonder if the disk driver is locking out the tlp/de and com
drivers for too long?