[tulip-bug] transmit timed out + too much work during an interrupt
Wed Aug 14 08:38:01 2002
On Mon, 12 Aug 2002, Gehrken Klaus wrote:
> Under not yet discovered circumstances, some of our firewallinterfaces stop
> no packets are transmittet or recieved any more until "ifdown ethx ; ifup
What does tulip-diag -af report when the card is hung?
Are there any receive errors reported in /proc/net/dev?
> In dmesg we see lots of: Too much work during an interrupt and Restarted Rx
> at xxx /yyy messages!
You can increase the max_interrupt_work parameter, but this likely the
driver protecting the system from interrupt thrashing. During the
no-interrupt periods the NIC runs short of receive buffers.
What kind of workload do you have?
How important is handling network traffic vs. doing other work?
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