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[Discuss-gnuradio] Losing data during long collects
From: |
Chris Stankevitz |
Subject: |
[Discuss-gnuradio] Losing data during long collects |
Date: |
Tue, 03 Jun 2008 13:41:03 -0700 |
User-agent: |
Thunderbird 2.0.0.0 (Windows/20070326) |
Hi,
I'm using the USRP/DBSRX to record data for GPS. GPS tracking demands a
continuous stream of data -- dropped bits make tracking impossible.
4Msps of complex data supplies 16 MB/s -- within USB2 bandwidth and my 4
disk RAID0 bandwidth.
I record the data using my own c++ version of cfile. I never get an
error or overrun condition from usrp_standard::read so it appears that
everything is working fine. However, when I process the data it is
clear that data is dropped -- approximately a few thousand samples every
minute or two. I typically record data for one hour at a time.
I read data from the USRP in batches of 8192 16 bit short samples.
Anyone have any tips on tracking down why I am dropping data?
Thanks,
Chris
- [Discuss-gnuradio] Losing data during long collects,
Chris Stankevitz <=
- Re: [Discuss-gnuradio] Losing data during long collects, Eric Blossom, 2008/06/03
- Re: [Discuss-gnuradio] Losing data during long collects, Jeff Brower, 2008/06/03
- Re: [Discuss-gnuradio] Losing data during long collects, Chris Stankevitz, 2008/06/03
- Re: [Discuss-gnuradio] Losing data during long collects, Chris Stankevitz, 2008/06/03
- Re: [Discuss-gnuradio] Losing data during long collects, Jeff Brower, 2008/06/04
- Re: [Discuss-gnuradio] Losing data during long collects, Chris Stankevitz, 2008/06/05
- Re: [Discuss-gnuradio] Losing data during long collects, Jeff Brower, 2008/06/05
- Re: [Discuss-gnuradio] Losing data during long collects, Eric Blossom, 2008/06/05
- Re: [Discuss-gnuradio] Losing data during long collects, Chris Stankevitz, 2008/06/05