# Benchmark\_Tx Problem **URL:** \ **Category:** GNU Radio\ **Created:** [April 6, 2012, 10:41pm UTC](https://www.ruby-forum.com/t/benchmark-tx-problem/218651 "2012-04-06T22:41:00Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![dubstep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/cdc98d/32.png) [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Post date:** [April 6, 2012, 10:41pm UTC](https://www.ruby-forum.com/t/benchmark-tx-problem/218651/1 "2012-04-06T22:41:00Z")
Hello, I am using USRP 1 with the XCVR2450 daughterboard. I am also using Ubuntu 10.0.4 with gnuradio-3.5.1. I have tried running benchmark\_tx/rx with the following parameters: ./benchmark\_tx.py -f 2.45G -A J1 --spec B:0 ./benchmark\_rx.py -f 2.45G -A J1 --spec B:0 I am not consistently able to receive the packets that are sent. I sometimes receive the initial packets, but then program begins to overflow (‘O’). I have tried connecting the USRP1s directly with attenuators, and I have also tried using the antennas. I have also used the uhd\_fft.py program in order to make sure that I am receiving a signal. I am able to see a peak at the correct frequency when I am transmitting. I have also tried using the Basic\_Tx/RX and LFTX/RX daughter-board and I obtain the same result. I would greatly appreciate any help or advise that anyone could give me. Thank you for your time and help. Sam – View this message in context: [http://old.nabble.com/Benchmark\_Tx-Problem-tp33645086p33645086.html](http://old.nabble.com/Benchmark_Tx-Problem-tp33645086p33645086.html) Sent from the GnuRadio mailing list archive at [Nabble.com](http://Nabble.com). ---
**Author:** ![sibar002](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/bbce88/32.png) [@sibar002](https://www.ruby-forum.com/u/sibar002)\ **Post date:** [April 7, 2012, 1:54am UTC](https://www.ruby-forum.com/t/benchmark-tx-problem/218651/2 "2012-04-07T01:54:06Z")
Sam - (O)s indicate that there are overflows occurring - your computer is not able to keep up with the data rate, and is falling behind in processing as new packets arrive. Cheers, Ben ---
**Author:** ![sibar002](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/bbce88/32.png) [@sibar002](https://www.ruby-forum.com/u/sibar002)\ **Post date:** [April 7, 2012, 2:00am UTC](https://www.ruby-forum.com/t/benchmark-tx-problem/218651/3 "2012-04-07T02:00:54Z")
Hello Ben, Thank you for your response. I tried adjusting my bitrate in order to prevent this from happening, but I continue to have the same problem. I forgot to mention that I am running a dual OS on my computer (Windows and Linux). Could this be causing the overflow problem? Thank you again. I really appreciate any help or advice. Thanks Sam Ben H.-3 wrote: > On Fri, Apr 6, 2012 at 1:39 PM, sibar002 [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > would > > [Discuss-gnuradio Info Page](https://lists.gnu.org/mailman/listinfo/discuss-gnuradio) – View this message in context: [http://old.nabble.com/Benchmark\_Tx-Problem-tp33645086p33646235.html](http://old.nabble.com/Benchmark_Tx-Problem-tp33645086p33646235.html) Sent from the GnuRadio mailing list archive at [Nabble.com](http://Nabble.com). ---
**Author:** ![sibar002](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/bbce88/32.png) [@sibar002](https://www.ruby-forum.com/u/sibar002)\ **Post date:** [April 7, 2012, 2:10am UTC](https://www.ruby-forum.com/t/benchmark-tx-problem/218651/4 "2012-04-07T02:10:45Z")
On 04/06/2012 07:59 PM, sibar002 wrote: > Are you running your Linux partition as a VM, or you just dual-boot? I’ve found that USB support through VMWare is _horrible_. > > On Fri, Apr 6, 2012 at 1:39 PM, sibar002[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > > > I am not consistently able to receive the packets that are sent. I > > > greatly appreciate any help or advise that anyone could give me. Thank – Marcus L. Principal Investigator Shirleys Bay Radio Astronomy Consortium > **[Live Draw HK Tercepat | Result HK | HK Pools | Live HK | HK Prize Hari Ini](https://www.sbrac.org/)** > > Temukan live draw hk tercepat melalui halaman hk pools yang resmi dan dapatkan result hk prize melalui live hk secara langsung di situs kami. ---
**Author:** ![sibar002](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/bbce88/32.png) [@sibar002](https://www.ruby-forum.com/u/sibar002)\ **Post date:** [April 7, 2012, 2:53am UTC](https://www.ruby-forum.com/t/benchmark-tx-problem/218651/5 "2012-04-07T02:53:58Z")
On Fri, Apr 6, 2012 at 8:10 PM, Marcus D. Leech [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > Thanks > > Sam > > Are you running your Linux partition as a VM, or you just dual-boot? > > I’ve found that USB support through VMWare is _horrible_. Sam, Also, are you building with autotools (./configure) or cmake? I’ve been seeing more reports on this then before, so I’m trying to figure out if there’s something odd going on and where. Tom ---
**Author:** ![sibar002](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/bbce88/32.png) [@sibar002](https://www.ruby-forum.com/u/sibar002)\ **Post date:** [April 9, 2012, 7:24pm UTC](https://www.ruby-forum.com/t/benchmark-tx-problem/218651/6 "2012-04-09T19:24:10Z")
Hello, Thank you for everyones response. Marcus - I am using a dual-boot because VM just wouldn’t for me. Tom - I used the ./configure. Thank You Samuel I.