The higher number seems to be from the netperf benchmark. See
https://www.phoronix.com/scan.php?page=article&item=raspberrypi-3-bplus&num=3


On Apr 5, 2018, at 10:02 AM, Steve Simon <steve@quintile.net> wrote:


hi,

great work richard, i hope to try this soon. the network performance is the biggest draw for me.

do you any feeling why plan9 sees only 200Mbps ether?

is it the stack design, how plan9 accesses the hardware? or maybe the 300Mbps quoted is only when using jumbo frames?

-Steve


On 5 Apr 2018, at 16:03, Richard Miller <9fans@hamnavoe.com> wrote:

Running Linux, 3B+ seems perceptibly faster than 3B.

1400Mhz vs 1200Mhz might be perceptible, and the improved
heat management will help if your CPU frequency was being
temperature-throttled.

Ethernet bandwidth for the 3B+ on linux is claimed to be
about 300Mbit/s.  With Plan 9, I'm seeing a limit of
just over 200Mbit/s.  Not gigabit, but still it's a 2x
improvement over earlier models.

Note: you need to use Cat 6 cable to get more than 100MB/s
speed.  I discovered this the hard way.  The orange LED
on the RJ45 socket goes on if the link is in gigabit mode.