Re: EEPro100 problems in SMP on 2.4.5 ?

From: Andrew Morton (
Date: Sat Jun 30 2001 - 00:21:23 EST

Dylan Griffiths wrote:
> Hi. While doing some file tranfers to our new server (a Compaq Proliant
> 8way XEON 500 with 4gb ram and an EEPro100 NIC), the box socked solid (no
> oops, no response via network, no response via console). The other hardware
> in the system was a Compaq Smart Array 9SMART2 driver). It's running
> Slackware 7.1. The other system was a dual P3 450 running Redhat 7.1 (Linux
> 2.4.2-2smp #1 SMP Sun Apr 8 20:21:34 EDT 2001 i686
> unknown) w/ 3c59x NIC. The Redhat machine experienced no problems.
> In Uni processor mode, the system is totally stable. But only using 1/8th
> of its power :-/ We had to roll back to 2.2.19 with a bigmem patch, but
> we'd like to have a stable 2.4 kernel to use (since it's so much better SMP
> wise, throughput wise, etc).

Some things to try:

1: Include `magic sysrq' support in the kernel and use ALT-SYSRQ-T and S
   when it has locked up. If you get some traces then please feed them
   into `ksymoops -m' and report back.

2: If the above doesn't work, add `nmi_watchdog=1' to the kernel boot
   options. That may catch the lockup.

3: Replace the NIC with another eepro100. If the problem goes away then
   chuck the old one.

4: Replace the NIC with one of a different type (ie: swap with the other
   machine). If that fixes it we look at the ethernet driver. Otherwise
   we look at, umm, the rest of the kernel.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

This archive was generated by hypermail 2b29 : Sat Jun 30 2001 - 21:00:23 EST