[vortex] Re: 3c59x compile problems + Question regarding 3C905C overruns in multi-switched environment
Jim Matthews
beowulf@cfdlab.larc.nasa.gov
Mon Aug 19 22:33:01 2002
Here is the latest followup to this question...
--JIM
Jim Matthews wrote:
Donald Becker wrote:
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@scyld.com mailing list,
since it's more of a driver problem than a MPI problem.
Ok, sorry about that.
> I have made the following changes to the
> drivers/net/Makefile to include support for pci-scan:
>
> 20c20
> < net_init.o mii.o pci-scan.o
...
> 66c66
> < 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.)
I tried it with and without the mii.o and I still got the same errors.
> 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?
gcc -D__KERNEL__ -I/misc/home1/jmatthew/src/linux-2.4.18/include -Wall
-Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer
-fno-strict-aliasing -fno-common -pipe -mpreferred-stack-boundary=2
-march=i686 -DKBUILD_BASENAME=3c59x -c -o 3c59x.o 3c59x.c
> 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'.)
Here is the output from lspci -v. This output is identical between the
Dells with and without overruns. The only difference is that the cluster
reporting
overruns is connected within a multi-switch environment where the other is
on a single switch. The system configuration is also identical as they
are
netbooted off of the same server using the same configuration maintained
by the same set of scripts and the both load identical kernels. The same
code is being tested on both clusters.
00:00.0 Host bridge: Intel Corp. 82850 850 (Tehama) Chipset Host Bridge
(MCH) (rev 04)
Subsystem: Dell Computer Corporation: Unknown device 010d
Flags: bus master, fast devsel, latency 0
Memory at e8000000 (32-bit, prefetchable) [size=128M]
Capabilities: [a0] AGP version 2.0
00:01.0 PCI bridge: Intel Corp. 82850 850 (Tehama) Chipset AGP Bridge (rev
04) (prog-if 00 [Normal decode])
Flags: bus master, 66Mhz, fast devsel, latency 64
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
Memory behind bridge: fc000000-fdffffff
Prefetchable memory behind bridge: f0000000-f7ffffff
00:1e.0 PCI bridge: Intel Corp. 82801BA/CA PCI Bridge (rev 04) (prog-if 00
[Normal decode])
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=64
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: fe100000-fe2fffff
00:1f.0 ISA bridge: Intel Corp. 82801BA ISA Bridge (LPC) (rev 04)
Flags: bus master, medium devsel, latency 0
00:1f.1 IDE interface: Intel Corp. 82801BA IDE U100 (rev 04) (prog-if 80
[Master])
Subsystem: Dell Computer Corporation: Unknown device 010d
Flags: bus master, medium devsel, latency 0
I/O ports at ffa0 [size=16]
00:1f.2 USB Controller: Intel Corp. 82801BA/BAM USB (Hub (rev 04)
(prog-if 00 [UHCI])
Subsystem: Dell Computer Corporation: Unknown device 010d
Flags: bus master, medium devsel, latency 0, IRQ 11
I/O ports at ff80 [size=32]
00:1f.3 SMBus: Intel Corp. 82801BA/BAM SMBus (rev 04)
Subsystem: Dell Computer Corporation: Unknown device 010d
Flags: medium devsel, IRQ 10
I/O ports at dcd0 [size=16]
00:1f.4 USB Controller: Intel Corp. 82801BA/BAM USB (Hub (rev 04)
(prog-if 00 [UHCI])
Subsystem: Dell Computer Corporation: Unknown device 010d
Flags: bus master, medium devsel, latency 0, IRQ 9
I/O ports at ff60 [size=32]
00:1f.5 Multimedia audio controller: Intel Corp. 82801BA/BAM AC'97 Audio
(rev 04)
Subsystem: Dell Computer Corporation: Unknown device 010d
Flags: bus master, medium devsel, latency 0, IRQ 10
I/O ports at d800 [size=256]
I/O ports at dc40 [size=64]
01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MXR]
(rev b2) (prog-if 00 [VGA])
Subsystem: nVidia Corporation: Unknown device 0070
Flags: 66Mhz, medium devsel, IRQ 11
Memory at fc000000 (32-bit, non-prefetchable) [size=16M]
Memory at f0000000 (32-bit, prefetchable) [size=128M]
Expansion ROM at 80000000 [disabled] [size=64K]
Capabilities: [60] Power Management version 2
Capabilities: [44] AGP version 2.0
02:0c.0 Ethernet controller: 3Com Corporation 3c905C-TX/TX-M [Tornado]
(rev 78)
Subsystem: Dell Computer Corporation: Unknown device 010d
Flags: bus master, medium devsel, latency 64, IRQ 11
I/O ports at ec80 [size=128]
Memory at fe1ffc00 (32-bit, non-prefetchable) [size=128]
Expansion ROM at fe200000 [disabled] [size=128K]
Capabilities: [dc] Power Management version 2
--
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James W. Matthews - UNIX System Administration / Beowulf Cluster Design
Raytheon Technical Services Company - NASA Langley Research Center
MS 128 - 18E West Taylor Street - Hampton, VA 23681
E-Mail: J.W.Matthews@LaRC.NASA.GOV - Phone: (757) 864-5259
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