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RE: [Discuss-gnuradio] Underrun (using libusrp only)
From: |
Per Zetterberg |
Subject: |
RE: [Discuss-gnuradio] Underrun (using libusrp only) |
Date: |
Fri, 22 Feb 2008 14:10:21 +0100 |
> Did you check to see if the machine is running at full speed?
> That is, not throttled back to save power?
I don't really know how to do this. Is it something I set in the BIOS ?
> Have you tried running usrp_fft.py -d 8?
> Does it work without overruns?
I can do receive-only at 32MByte/sec without problem (also with libusrp
only).
BR/
Per
> -----Original Message-----
> From: 'Eric Blossom' [mailto:address@hidden
> Sent: den 21 februari 2008 19:27
> To: Per Zetterberg
> Cc: 'Johnathan Corgan'; address@hidden
> Subject: Re: [Discuss-gnuradio] Underrun (using libusrp only)
>
> On Thu, Feb 21, 2008 at 06:04:52PM +0100, Per Zetterberg wrote:
> > I have tried now with a better computer (Dell620) - same results.
>
> Did you check to see if the machine is running at full speed?
> That is, not throttled back to save power?
>
> > Is the USB-rate in transmit-only 32MByte/sec ?
>
> Yes. The USB is half-duplex. We can sustain a total of
> 32MB/s as the sum of the Tx and Rx data rates.
>
> Have you tried running usrp_fft.py -d 8?
> Does it work without overruns?
>
> Admin note: please be sure to use the "Reply-to-All" command
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>
> Eric
>