|Subject:||Re: [Discuss-gnuradio] Metafile Sink Execution Time|
|Date:||Mon, 25 Aug 2014 18:29:31 -0400|
On 08/25/2014 04:30 PM, Jonathan Fox wrote:Putting a throttle in a flow that already has rate-pacing will just make things worse...Got rid of it and it sped things up considerably. I think the whole reason why I had it there in the first place was to prevent sample overruns.
Thanks for the help.
On Mon, Aug 25, 2014 at 3:15 PM, <address@hidden> wrote:
First thing, get rid of the throttle. It is only needed in *simulations*. In graphs with real hardware, everything is "paced" by the hardware.
On 2014-08-25 15:12, Jonathan Fox wrote:JonThanks,How long it takes for the Metafile Sink to began recording data?I start my script up I get the usually GNU Radio feed back (e.g. "Opening a USRP2/N-Series device..."), I get the "Press Enter to quit:", however post processing of collected meta data has shown that I can not immediately start my data collection as it won't collect the leading edge of the signal, I need to wait several seconds before proceeding. Why does this happen and is it possible to get a prompt on when the metafile sink has started recording?
I have a "No GUI" script that is a simple USRP source, throttle, and metafile sink. All have a 1M sample rates; the metafile sink has a relative rate of change of 1, 1M segment size, and have a detached header.
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