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Re: [Discuss-gnuradio] Getting one or more Ds after hours of running a G

From: mleech
Subject: Re: [Discuss-gnuradio] Getting one or more Ds after hours of running a GRC app on Ubuntu
Date: Tue, 03 May 2016 15:12:58 -0400
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The native BER of 1000BASE-T is better than 1.0e-11 or so.

Which means you'd expect a bad bit roughly every half-hour at 2msps (64Mbit/sec), the bad-bit probabilities get worse as you make the cable longer.




On 2016-05-03 12:59, John Shields wrote:

On 03/05/16 15:01, address@hidden wrote:

It's possible that we're dealing with a memory leak somewhere.  Could you watch the memory consumption of simple_ra over time?

Also, could you just run something like uhd_fft with the same sample rate for long periods to see if it gets the same 'D' treatment?




On 2016-05-03 04:32, John Shields wrote:

Thanks Marcus,

        Have put answers in-line.

               Kind Regards,


Discuss-gnuradio mailing list
Ok, Marcus, will do. Overnight (NZ time) I got 1 D with the Atheros. I should have said that the N200 was in the shack and the Ubuntu system in the house. I have several runs of Ethernet out to the shack so will do some experimentation on the different connections. Then I will move the Ubuntu system to the shack and see if colocation helps. These investigations will take some days but will let you know.

         Kind Regards,


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