Thursday, January 30, 2020

Re: Low throughput with 1 GigE interface

Peter wrote:

> chi# iperf -c beta.internal.centroid.eu
> ------------------------------------------------------------
> Client connecting to beta.internal.centroid.eu, TCP port 5001
> TCP window size: 17.0 KByte (default)
> ------------------------------------------------------------
> [ 3] local 192.168.177.40 port 13242 connected with 192.168.177.2 port 5001
> [ ID] Interval Transfer Bandwidth
> [ 3] 0.0-10.0 sec 536 MBytes 449 Mbits/sec
>
> ... on an APU1C4, could it be you have a slow switch or router? Any other
> hardware that could slow yours down?
>
> I'm happy with this result, the APU1 is not really a powerhorse.

That is pretty normal. From an older Intel-cpu laptop with a bge interface,
to my APU2, both on a TP-Link gig switch, I get

$ iperf -c gw-int
------------------------------------------------------------
Client connecting to gw-int, TCP port 5001
TCP window size: 32.5 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.42.46 port 21653 connected with 192.168.42.254 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 502 MBytes 421 Mbits/sec
$

Again, that's with no tuning. Did you try a different cable?

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