[realtek-bug] Realtek 8139C problems, linux 2.2.19
Mon Aug 19 21:18:03 2002
On Mon, 19 Aug 2002, Dan Miller wrote:
> We've been having a variety of sporadic problems with the Realtek
> driver, V1.17, under linux 2.2.19. Most recently, we left a system
> running over the weekend with the WebStone test (500 connections)
> running through our machine. After running for a few hours, it
> displayed the following series of messages, and the ethernet interface
> quit functioning.
The "memory squeeze" message is the driver complaining about no memory.
> We could restore system functionality by downing and uping the
> interface, but the system is VERY low on memory; I'm enclosing the
> meminfo output after the crash.
Any idea of where it went?
The driver shouldn't have lost any skbuffs -- it takes care to free them
during a timeout.
> Do you have any insights into what's going on here??
Flow control from the switch? Or a blocked interrupt line?
Try an updated driver -- v1.18 added a message for blocked interrupt
> eth0: Transmit timeout, status 0d 0000 media 10.
> eth0: Tx queue start entry 1183 dirty entry 1183.
> eth0: Tx descriptor 0 is 0008a03c.
> eth0: Tx descriptor 1 is 0008a03c.
> eth0: Tx descriptor 2 is 0008a03c.
> eth0: Tx descriptor 3 is 0008a03c. (queue head)
> eth0: MII #32 registers are: 1100 782d 0000 0000 01e1 45e1 0001 0000.
Your switch advertised flow control...
> eth0: Abnormal interrupt, status 00000010.
Rx ring buffer overflow. You are short of memory.
Donald Becker firstname.lastname@example.org
Scyld Computing Corporation http://www.scyld.com
410 Severn Ave. Suite 210 Second Generation Beowulf Clusters
Annapolis MD 21403 410-990-9993