Michael Chan wrote:
On Thu, 2005-06-09 at 17:38 -0700, Ben Greear wrote:
* Is the BCM5704 chipset/driver really that much slower?
Unfortunately, the 5704 requires the "ONE_DMA" workaround which will
limit throughput in a PCIX 100/133 bus. If you comment out the line that
sets the DMA_RWCTRL_ONE_DMA flag in tg3.c, you should see improved
performance. However, you may run into some DMA issues on certain
systems.
Is there any way I can tell which systems are affected? It won't be
an option for me to purposefully ship possibly busted drivers/hardware,
but if I can be certain that my systems are immune, I will try this
modification.
* Is there some information on tuning the tg3 somewhere?
(I didn't see a Documentation/networking/tg3.txt file, for instance)
* Is there a way to verify the bus speed that the NIC is running at?
(ethtool -d ethX gives lots of meaningless (to me) hex)
tg3 probing string for each device will tell you the bus type, width,
and speed.
Thanks, I found it.
Ben
--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc http://www.candelatech.com
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