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[Discuss-gnuradio] File sink causes "S" errors
From: |
Thomas Hobiger |
Subject: |
[Discuss-gnuradio] File sink causes "S" errors |
Date: |
Wed, 06 Oct 2010 10:35:45 +0900 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.12) Gecko/20100907 Fedora/3.0.7-1.fc12 Lightning/1.0b2pre Mnenhy/0.8.3 Thunderbird/3.0.7 |
Hi everybody,
I am running a USRP2 with a DBSRX and talking to the hardware via raw
ethernet. Running GRC goes well (e.g. doing a real-time FFT spectrum),
but when I start recording on disc I get many "S" messages ("2
successive packets which do not have 2 successive sequence numbers")
after about 10 seconds. I am currently sampling with a decimation of 4,
but the problem remains with other decimation factors as wekk, just the
messages show up slightly delayed. I think the HD itself is not the
reason as I am recording to a 80 GB SSD, which has EXT4 and is mounted
in a quite fast mode (I have benchmarked the I/O giving me much more
bandwidth than what streams in from the USRP2).
I have started to modify parts of the GNURADIO code, but changing buffer
sizes does not help much.
Is there anybody who experienced similar troubles?
Regards,
Thomas Hobiger
--
******************************************************************
Dr. Thomas Hobiger
Space-Time Measurement Project
Space-Time Standards Group
New Generation Network Research Center
National Institute of Information and Communications Technology
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4-2-1 Nukui-Kitamachi, Koganei
184-8795 Tokyo
Japan
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email: address@hidden
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homepage (priv.): http://www.hobiger.org
******************************************************************
- [Discuss-gnuradio] GNU Radio roadmap, Pandeya, Neel L., 2010/10/05
- [Discuss-gnuradio] File sink causes "S" errors,
Thomas Hobiger <=
- Re: [Discuss-gnuradio] File sink causes "S" errors, Josh Blum, 2010/10/05
- Re: [Discuss-gnuradio] File sink causes "S" errors, Thomas Hobiger, 2010/10/06
- Re: [Discuss-gnuradio] File sink causes "S" errors, Nick Foster, 2010/10/06
- Re: [Discuss-gnuradio] File sink causes "S" errors, Seth David Schoen, 2010/10/06
- Re: [Discuss-gnuradio] File sink causes "S" errors, Thomas Hobiger, 2010/10/06
- Re: [Discuss-gnuradio] File sink causes "S" errors, Thomas Hobiger, 2010/10/06
- Re: [Discuss-gnuradio] File sink causes "S" errors, Josh Blum, 2010/10/06
- Re: [Discuss-gnuradio] File sink causes "S" errors, Thomas Hobiger, 2010/10/06