3c59x compile problems + Question regarding 3C905C overruns in multi-switched environment
becker at scyld.com
Mon Aug 19 11:33:38 EDT 2002
On Sun, 18 Aug 2002, Jim Matthews wrote:
> I am trying to compile Donald Becker's latest 3c59x driver into the
> 2.4.18 kernel.
> I get 0 overruns in a single switch
> environment with identical machine hardware and configuration. These
> overruns are definitely affecting performance, some MPI jobs run as much
> as 3 times faster on the machines w/o overruns.
You should probably move this to the vortex at scyld.com mailing list,
since it's more of a driver problem than a MPI problem.
> I have made the following changes to the
> drivers/net/Makefile to include support for pci-scan:
> < net_init.o mii.o pci-scan.o
> < obj-$(CONFIG_VORTEX) += 3c59x.o pci-scan.o mii.o
You don't need "mii.o" support for the updated driver set. (The mii.o
file contains a few bogus support routines -- functions that need not
and should not be done in the kernel.)
> When I compile and link I get lots of undefined references (see below).
> What do I need to be doing in order to resolve these symbol errors?
They look like module version problems.
What was the compile line for the 3c59x.c driver?
> Another question (probably a question for Donald Becker). The reason
> why I am trying to compile a new driver is because I have been seeing
> lots of (1%) overruns on Dell precision 340s using the 3C905C card in a
> multi-switched environment.
Rx overruns? That should only happen if the PCI bus is overloaded. The
3c905C should be at least as efficient as the 82559, so there must be a
bus setting that differs between the two. What does the /proc/pci entry
report? (Or you can use 'lspci -v'.)
Donald Becker becker at scyld.com
Scyld Computing Corporation http://www.scyld.com
410 Severn Ave. Suite 210 Second Generation Beowulf Clusters
Annapolis MD 21403 410-990-9993
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