[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] USRP - FC3 usb transfer rate tx. vs. rx.
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] USRP - FC3 usb transfer rate tx. vs. rx. |
Date: |
Mon, 7 Mar 2005 13:29:17 -0800 |
User-agent: |
Mutt/1.5.6i |
On Mon, Mar 07, 2005 at 07:13:22AM -0600, Greg Spanel wrote:
> I'm running Fedora core 3 on several different machines including
> one with the Intel motherboard with the fast southbridge.
>
> The tx. transfer rate on all of these machines is 6meg/sec. using
> test_usrp_standard_tx.
> The rx. rate is 32meg/sec., however.
>
> I found that if you comment out line 250 in test_usrp_standard_tx
> and recompile, the tx. transfer rate jumps to 32meg/sec.
>
> Line 250 was printf("tx_underrun\n"); now is //printf("tx_underrun\n");
>
> I hope this helps,
>
> Greg Spanel
Let me guess, you're using a gnome-terminal window?
They are really, really slow.
As an experiment try running the unmodified example in an xterm, or
change the printf to printf("U").
Eric