[srslte-users] Throughput tests
Kewin Rausch
krausch at fbk.eu
Tue Feb 13 19:11:53 UTC 2018
True, but bandwith from the client side is not reliable, because it just
measure the performance of your driver or hardware (as far as i know).
It does not take into account re-transmissions, lost or other kind of
events. With wireless communication those ones shold be taken into account.
On Feb 13, 2018 7:42 PM, "Ismael Gomez" <
ismael.gomez at softwareradiosystems.com> wrote:
> Actually with iperf(2) you dont really need a server endpoint. UDP is
> connection-less
>
> El mar., 13 feb. 2018 19:34, Kewin Rausch <krausch at fbk.eu> escribió:
>
>> Whoops, I was stuck with the Iperf(2) question.
>>
>> On Feb 13, 2018 7:30 PM, "Cedric Roux" <Cedric.Roux at eurecom.fr> wrote:
>>
>>> iperf3 is different :)
>>>
>>> On 02/13/2018 07:06 PM, Kewin Rausch wrote:
>>> > Ehm.... actually for an UDP server you should run:
>>> >
>>> > iperf -s -u
>>> >
>>> > Otherwise iperf runs a TCP server (the log on the console should
>>> report it).
>>> >
>>> > Usually looking at the help (--help) or at online tutorials is a good
>>> start; try googling it.
>>> >
>>> > Kewin
>>> >
>>> > On Feb 13, 2018 6:52 PM, <dmakris at iit.demokritos.gr <mailto:
>>> dmakris at iit.demokritos.gr>> wrote:
>>> >
>>> > Hi Ismael,
>>> >
>>> > I run the iperf client from EPC, but the Smartphone does not
>>> answers, as a
>>> > server.
>>> > On the other hand, i use iperf3 server in EPC (iperf3 -s), and on
>>> the
>>> > smarthpone the iperf3 client(-c 192.168.3.1 -t 1000 -u -R). The R,
>>> means
>>> > the reverse mode. So the UE, downloads UDP packets. I set the
>>> bandwidth 75
>>> > Mbps (-b 75m), but the DL throughput is only 11 Mbps.
>>> >
>>> > Best regards,
>>> > Dimitris
>>> >
>>> > > run the following command from EPC (amarisoft) server:
>>> > >
>>> > > iperf -c 192.168.3.2 -b75M -t100 -u
>>> > >
>>> > > to run a DL iperf and to run UL iperf:
>>> > >
>>> > > iperf -c 192.168.3.1 -b30M -t100 -u
>>> > >
>>> > >
>>> > > On Tue, 13 Feb 2018 at 10:44 <dmakris at iit.demokritos.gr <mailto:
>>> dmakris at iit.demokritos.gr>> wrote:
>>> > >
>>> > >> Hi Ismael,
>>> > >>
>>> > >> i use in the smartphone (client) the following:
>>> > >> -c 192.168.3.1 -t 1000 -u -R.
>>> > >> In the EPC (Amarisoft) runs the iperf -s (server).
>>> > >>
>>> > >> Best Regards,
>>> > >> Dimitris
>>> > >>
>>> > >> > what command do you use for UDP iperf?
>>> > >> >
>>> > >> > On Tue, 13 Feb 2018 at 10:34 <dmakris at iit.demokritos.gr
>>> <mailto:dmakris at iit.demokritos.gr>> wrote:
>>> > >> >
>>> > >> >> Hi Ismael,
>>> > >> >>
>>> > >> >> thank you for your immediate response.
>>> > >> >> I tune the Tx and Rx gains to 88 and 45 dB respectively, so
>>> the snr
>>> > >> from
>>> > >> >> trace monitoring is about 27 dB.
>>> > >> >> I run the tests using speedtest from Okla, and i measure the
>>> DL
>>> > >> between
>>> > >> >> 12
>>> > >> >> and 20 Mbps. The UL is about 25 Mbps.
>>> > >> >> Then i run an iperf UDP test. When i try to download, the DL
>>> is about
>>> > >> 10
>>> > >> >> Mbps and the snr goes to -nan.
>>> > >> >>
>>> > >> >> Best Regards,
>>> > >> >> Dimitris
>>> > >> >>
>>> > >> >>
>>> > >> >> > Are you using TCP or UDP? TCP performance with srsENB is
>>> not quite
>>> > >> >> good
>>> > >> >> at
>>> > >> >> > the moment. Try UDP first.
>>> > >> >> >
>>> > >> >> > Also tune the TX and RX gains so that you have high SNR
>>> (~27-30 dB)
>>> > >> in
>>> > >> >> > both
>>> > >> >> > directions.
>>> > >> >> >
>>> > >> >> > On Tue, 13 Feb 2018 at 10:17 <dmakris at iit.demokritos.gr
>>> <mailto:dmakris at iit.demokritos.gr>> wrote:
>>> > >> >> >
>>> > >> >> >> Hi srsLTE community,
>>> > >> >> >>
>>> > >> >> >> in our testbed, we use the latest srsLTE software
>>> (Latest commit
>>> > >> >> >> 2734ce6)
>>> > >> >> >> running on an Intel Core i7-7700K CPU (8x4.2 GHz), with
>>> 16 Gbyte
>>> > >> RAM.
>>> > >> >> >> The
>>> > >> >> >> OS is Ubuntu 16.04. For the RF front end we use the Ettus
>>> B210 in
>>> > >> >> SISO
>>> > >> >> >> Mode.
>>> > >> >> >> For 1.4, 3, 5 and 10 MHz Bandwidth, we achieve the
>>> expected
>>> > >> >> throughput.
>>> > >> >> >> But for 15 and 20 MHz, the DL varies between 12 and 20
>>> Mbps. The
>>> > >> UL
>>> > >> >> is
>>> > >> >> >> about 25 Mbps.
>>> > >> >> >>
>>> > >> >> >> Should we change another parameter from drb, rr, or sib
>>> > >> >> configuration
>>> > >> >> >> files?
>>> > >> >> >> Thank you for your help.
>>> > >> >> >>
>>> > >> >> >> Thank you in advance,
>>> > >> >> >> Dimitris
>>> > >> >> >>
>>> > >> >> >> _______________________________________________
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>>> > >> >> >
>>> > >> >>
>>> > >> >>
>>> > >> >>
>>> > >> >
>>> > >>
>>> > >>
>>> > >>
>>> > >
>>> >
>>> >
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destinatari indicati e per le finalità strettamente legate al relativo
contenuto. Se avete ricevuto questo messaggio per errore, vi preghiamo di
eliminarlo e di inviare una comunicazione all’indirizzo e-mail del mittente.
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