[srslte-users] Throughput tests

[Cedric Roux]

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
>     >> >> >>
>     >> >> >> _______________________________________________
>     >> >> >> srslte-users mailing list
>     >> >> >> srslte-users at lists.softwareradiosystems.com <mailto:srslte-users at lists.softwareradiosystems.com>
>     >> >> >> http://www.softwareradiosystems.com/mailman/listinfo/srslte-users <http://www.softwareradiosystems.com/mailman/listinfo/srslte-users>
>     >> >> >>
>     >> >> >
>     >> >>
>     >> >>
>     >> >>
>     >> >
>     >>
>     >>
>     >>
>     >
> 
> 
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