Date: Wed, 20 Sep 2017 23:07:06 -0700 From: Russell Haley <russ.haley@gmail.com> To: Carl Johnson <carlj@peak.org> Cc: freebsd-arm <freebsd-arm@freebsd.org> Subject: Re: Unexpected Results from nuttcp testing wifi on arm Message-ID: <CABx9NuS%2BAqKPUBtbq%2BWMqzgOwpa9E8TLVskfQXqTK16vM6rMdw@mail.gmail.com> In-Reply-To: <86tvzxs6sq.fsf@elm.localnet> References: <CABx9NuRjxrauDTpM=yam=Bpw-Wx6CHP8DVcpxV9WwE0tfutN6g@mail.gmail.com> <CABx9NuT_6JEWEhwjpvmPsEoQLeA7QHaeQ_Tt5seKFrDMJdN53w@mail.gmail.com> <86tvzxs6sq.fsf@elm.localnet>
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On Wed, Sep 20, 2017 at 8:56 AM, Carl Johnson <carlj@peak.org> wrote: > 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. Very helpful in validating that I haven't done something drastically wrong. Thank you. Russ > -- > Carl Johnson carlj@peak.org > > _______________________________________________ > freebsd-arm@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-arm > To unsubscribe, send any mail to "freebsd-arm-unsubscribe@freebsd.org"
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