eepro100 load

eepro100 load

[Marc Leeman]

A (quick) question:

we're using 82551ER silicon with the eepro100 driver to take in data.
After doing some tests where we tried to eliminate all^Wmost other
resource consuming factors, we came to the conclusion that a lot of the
used processing is done in kernel mode handling incoming data, which
seems to contradict the rumoured efficiency of the hardware/driver.

We are currently looking into some settings (rx buffers) in /proc, but
70-80 Mbps with a 350 MHz should be able to handle this without this
much load (seems to be > 60% in kernel mode for the moment for 56 Mbps).

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

Re: eepro100 load

[Marc Leeman]

--ghzN8eJ9Qlbqn3iT
Content-Type: text/plain; charset=iso-8859-15
Content-Disposition: inline

> 70-80 Mbps with a 350 MHz should be able to handle this without this
> much load (seems to be > 60% in kernel mode for the moment for 56
> Mbps).

The same goes for the e100 driver from Intel (haven't looked at the
non-default settings very much though); perhaps slightly worse as the
eepro100 driver, though the e100 driver seems to be able to limit limit
the resulting errors (overflow) to one source, while the eepro100 driver
distributes the errors over the different network sources, making them
all corrupt.

** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/