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From: | Chris Stankevitz |
Subject: | Re: [Discuss-gnuradio] Losing data during long collects |
Date: | Thu, 05 Jun 2008 16:07:39 -0700 |
User-agent: | Thunderbird 2.0.0.14 (X11/20080502) |
Dan Halperin wrote:
USRP's cfile utility cannot write my data without overruns, so I use my own app which I have attached to this email in case anyone is interested. I will try Juha's recorder to see if it performs better.FWIW (maybe you've fixed the problem already), I would think that if this is the case then you're using the cfile script wrong. Are you using the '-s' switch (to halve the required disk bandwidth)?
Hi Dan,Yes, I record the data as 16 bit shorts vs. 32 bit floats. At 4Msps complex data, this provides 16 megabytes per second which is within the capabilities of my 4 disk RAID0 array. Here are the results of the bonnie++ benchmark which reports my drive can write at 58 megabytes per second:
Version 1.03 ------Sequential Output------ -Per Chr- --Block-- Machine Size K/sec %CP K/sec %CP cstankevitz-lapt 4G 34335 44 58313 5 Chris
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