Date: Wed, 20 Sep 2017 08:56:05 -0700 From: Carl Johnson <carlj@peak.org> To: freebsd-arm@freebsd.org Subject: Re: Unexpected Results from nuttcp testing wifi on arm Message-ID: <86tvzxs6sq.fsf@elm.localnet> In-Reply-To: <CABx9NuT_6JEWEhwjpvmPsEoQLeA7QHaeQ_Tt5seKFrDMJdN53w@mail.gmail.com> (Russell Haley's message of "Tue, 19 Sep 2017 23:07:01 -0700") References: <CABx9NuRjxrauDTpM=yam=Bpw-Wx6CHP8DVcpxV9WwE0tfutN6g@mail.gmail.com> <CABx9NuT_6JEWEhwjpvmPsEoQLeA7QHaeQ_Tt5seKFrDMJdN53w@mail.gmail.com>
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Russell Haley <russ.haley@gmail.com> writes: > Hi, > > So I am consistently getting very low throughput when testing with > nuttcp if I use my arm board as the client. If the desktop is the > client, I am averaging ~8 Mbps. When my arm board is the client, I get > an average of just over 1 Mbps. This doesn't seem right to me. Any > input or confirmation that this is incorrect would be grand. My > assumption is I have done something wrong. :-/ > > Russ I find that some USB adapter have asymmetric speeds, similar to what you are seeing. I use iperf3 and get relatively symmetric speeds with a RTL8188EU, but not with a RTL8188CUS. With the RTL8188CUS I see about 20Mb/sec send and 1Mb/sec receive. The RTL8188EU gets about 19Mb/sec send and about 21Mb/sec receive. I hope this helps a little, but I don't know anything more than my observations. -- Carl Johnson carlj@peak.orghome | help
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