[eepro100] eth0: card reports no resources
Thu Oct 17 18:07:02 2002
Irene Koo wrote:
> recently several of our linux machines are experiencing
> the eth0:card reports no resources problem.
> our machines are HP Pentium III 1.2G Hz 2-CPU machines,
> running redhat 2.4.18-10smp kernel
> i have read through the previous emails in the archive
> and updated the bdflush with
> echo 100 >> /proc/sys/vm/bdflush
> (i read from the documentations that the 2nd, 3rd
> parameters are dummy)
> and used the ipTraf to monitor the # of packets in/out
> of the system.
> i was wondering if anybody knows what's the max
> traffic the NIC can handle? we are running some medium~high
> traffic onto the systems
I have run sustained 96Mbps send + receive on two ports for 4+ days.
However, this was using the tulip driver, and it was using a low level
packet generator (pktgen). This does lead me to be a little skeptical
about the excuse that it is the operating system that is screwing up, and
not the hardware/driver...
I have also run a sustained 85Mbps stream send + receive over two ports,
from user space, on tulip and have seen no problems (12 hour run, so far)
Mr Becker, I would be glad to hear of a reason why the e100 seems to have
these problems but the tulip does not. Is the tulip driver/chipset that
much better? (I had always assumed that the e100 hardware was supperior).
> my systems show
> x Total rates: 672.6 kbits/sec Broadcast packets: 504
> x 568.2 packets/sec Broadcast bytes: 172368
> x Incoming rates: 296.8 kbits/sec
> x 289.0 packets/sec
> x IP checksum errors: 0
> x Outgoing rates: 375.8 kbits/sec
> x 279.2 packets/sec
These rates are very slow, and you should have no problems. Of course, you may
have very bursty traffic from time to time.
Cat out /proc/net/dev and see if you have a bunch of errors that may indicate
cable or some other physical problem.
If worse comes to worse, try Intel's e100 driver (it ships with RH I believe).
Ben Greear <email@example.com> <Ben_Greear AT excite.com>
President of Candela Technologies Inc http://www.candelatech.com
ScryMUD: http://scry.wanfear.com http://scry.wanfear.com/~greear