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Re: [Discuss-gnuradio] number of blocks in a burst over USB
From: |
George Nychis |
Subject: |
Re: [Discuss-gnuradio] number of blocks in a burst over USB |
Date: |
Tue, 29 May 2007 22:26:41 -0400 |
User-agent: |
Thunderbird 1.5.0.10 (X11/20070417) |
Eric Blossom wrote:
> It's not the number of blocks in a burst. It's the number of blocks
> that are allocated for asynchronous tranfers.
>
> I suggest starting with:
>
> fusb_block_size = 4096
> fusb_nblocks = 16
>
> Though after everything is working and realtime scheduling is
> enabled (for the usrp mblocks), we may want to switch to
>
> fusb_block_size = 1024
> fusb_nblocks = 16
>
Okay, so the one of the reasons I moved d_urx->start() out of the
initialization code was
that it's causing all of my machines to lockup within seconds. I'm having a
hard time
debugging this one as it is literally only seconds before things lock up.
Without starting the RX side, the code runs to completion without flinching
(test_usrp_inband). As soon as I start the RX side, lock up on all 3 machines
I've tried
this on. Granted, they're all Gentoo x86 machines. I've tried doubling the
USB block
size, still a lock up.
Any ideas?
- George