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Re: [Discuss-gnuradio] USRP Benchmark fails with 32MB/sec
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From: |
Eric Blossom |
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Subject: |
Re: [Discuss-gnuradio] USRP Benchmark fails with 32MB/sec |
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Date: |
Sat, 3 Nov 2007 18:52:10 -0700 |
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User-agent: |
Mutt/1.5.9i |
On Sat, Nov 03, 2007 at 01:23:10PM +0100, Tomek wrote:
> Hey!
>
> I installed the software and all tests ran OK. I have an USRP and I ran the
> benchmark "test_usrp_benchmark.py" and almost every time I start the script
> I get another result. Sometimes 4MB sometimes 16MB but never 32MB.
Yes, it's known to be flakey. Patches welcome.
The simplest way to check your USB throughput is with usrp_fft.py.
Fire it up and try setting the decimation rate to 8.
If that works without overrurns "uOuOuOuO..." on the display,
you're sustaining 64e6/8 * 4bytes/sample = 32MB/sec.
Eric