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From: Pete Heist <peteheist@gmail.com>
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Date: Thu, 9 Feb 2017 17:36:08 +0100
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Subject: [Cake] Cake latency update
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I=E2=80=99m seeing good latency results for Cake at lower MCS levels =
(graphs below), in case that wasn=E2=80=99t already known. These results =
are with half-duplex rate limiting at around 90% of iperf3 reported =
throughput. =E2=80=9CDefault=E2=80=9D is LEDE=E2=80=99s default from the =
ath9k driver.

In addition to these fixed MCS level tests, I=E2=80=99m also testing MCS =
level =E2=80=9Csteps=E2=80=9D (step up and step down in the middle of =
the test), and a varying MCS level test to simulate what can happen in =
the field. Full results to follow later...

Pete

http://www.drhleny.cz/bufferbloat/mcstmp/mcs_latency.png =
<http://www.drhleny.cz/bufferbloat/mcstmp/mcs_latency.png>

http://www.drhleny.cz/bufferbloat/mcstmp/mcs_throughput.png =
<http://www.drhleny.cz/bufferbloat/mcstmp/mcs_throughput.png>


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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><div class=3D"">I=E2=80=99m seeing good latency results for =
Cake at lower MCS levels (graphs below), in case that wasn=E2=80=99t =
already known. These results are with half-duplex rate limiting at =
around 90% of iperf3 reported throughput. =E2=80=9CDefault=E2=80=9D is =
LEDE=E2=80=99s default from the ath9k driver.</div><div class=3D""><br =
class=3D""></div><div class=3D"">In addition to these fixed MCS level =
tests, I=E2=80=99m also testing MCS level =E2=80=9Csteps=E2=80=9D (step =
up and step down in the middle of the test), and a varying MCS level =
test to simulate what can happen in the field. Full results to follow =
later...</div><div class=3D""><br class=3D""></div><div class=3D""><div =
class=3D""><div class=3D"">Pete</div></div><div class=3D""><br =
class=3D""></div><div class=3D""><a =
href=3D"http://www.drhleny.cz/bufferbloat/mcstmp/mcs_latency.png" =
class=3D"">http://www.drhleny.cz/bufferbloat/mcstmp/mcs_latency.png</a></d=
iv><div class=3D""><br class=3D""></div><div class=3D""><a =
href=3D"http://www.drhleny.cz/bufferbloat/mcstmp/mcs_throughput.png" =
class=3D"">http://www.drhleny.cz/bufferbloat/mcstmp/mcs_throughput.png</a>=
</div><div class=3D""><br class=3D""></div></div></body></html>=

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