[Bloat] link saturation test failing

Toke Høiland-Jørgensen toke at toke.dk
Mon Dec 31 15:39:40 EST 2018


Dev <dev at logicalwebhost.com> writes:

> I’m running Debian Buster, trying to saturate a link, enable fq_codel
> and drop my ping times back down, but they seem to stay high.
>
> I connected machine A and B to a gig switch, then dropped the port
> speed on machine A like:
>
> ethtool -s enp8s0 advertise 0x002

>From which machine are you running the test? If your bottleneck is the
switch, that is where the buffering will happen; FQ-CoDel on the host
can do nothing about that...

-Toke



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