Messages in this thread | | | Date | Mon, 25 Feb 2008 15:53:01 -0500 | From | Jeff Garzik <> | Subject | Re: net: tx timeouts with skge, 8139too, dmfe drivers/NICs |
| |
Marin Mitov wrote: > Hi all, > > I experience very rare freezes at heavy outbound traffic > (sending ~4GB DVD image to another host(s) on the same LAN) > using skge driver (NIC on the mobo) as well as (recently tested) > using rtl8139 or dmfe NICs on the PCI bus. There is a single > switch between them (tested with another one just to exclude > a faulty switch). > > skge <--> Marvell 88E8001 chip > 8139too <--> Realtek 8136B chip > dmfe <--> Davicom DM9102 chip > > Symptoms are similar: tx timeouts and no more net activity. > KDE desktop works, computational programs - work, the machine > is usable, but cannot ping, nor can be ping-ed anymore. > rmmod && modprobe the respective modules repairs the problem. > Simple surfing/e-mailing from it do not trigger the problem. > > The machine is used as LTSP server for old PCs (as X terminals) > (mostly outbound traffic) and is not usable as such due to this > problem. > > The kernel is 2.6.24.2-SMP/x86_32 (PREEMPT or not - NO difference). > > As far as this happens with 3 different NICs/drivers could it be > a problem in the (common for all of them) networking subsystem?
A TX timeout (like hardware timeouts, in general) is a very generic behavior, with many causes.
In general, when you see timeouts with varied hardware and drivers, you're almost always dealing with a problem with interrupt delivery, or a generic system problem, rather than bugs in the network stack or all three drivers.
Jeff
| |