Re: [Discuss-gnuradio] NetBSD USRP USB changes committed to master repository

[Berndt Josef Wulf]

On Wednesday 26 July 2006 23:19, Greg Troxel wrote:
>   barossa: {29} ./test_usrp_standard_rx
>   ....
>   xfered 1.34e+08 bytes in 4.2 seconds.  3.197e+07 bytes/sec.  cpu time =
>   0.04173
>   noverruns = 41
>
>   barossa: {30} ./test_usrp_standard_tx
>   ...
>   usb_control_msg failed: error sending control message: Input/output error
>   xfered 1.34e+08 bytes in 4.64 seconds.  2.894e+07 bytes/sec.  cpu time =
> 0.491 41 underruns
>
> So this doesn't work.  Could you try with decimation 10 (or 12, until
> you get only a few underruns)?

Here are the values that stop producing overruns:

barossa: {101} ./test_usrp_standard_rx -D 10
xfered 1.34e+08 bytes in 5.24 seconds.  2.56e+07 bytes/sec.  cpu time = 0.0399
noverruns = 0

barossa: {106} ./test_usrp_standard_tx -I 20
usb_control_msg failed: error sending control message: Input/output error
xfered 1.34e+08 bytes in 5.28 seconds.  2.542e+07 bytes/sec.  cpu time = 0.492
0 underruns

cheerio Berndt

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