[linrad] Re: Linrad-02.05

[Ramiro Aceves <gmail.com; ea1abz@xxxxxxxxxxxxxxxx>]

Hello Leif and others,

> ------------------------------------
> The routine rx_output is a small simple routine in straight C code.
> It does however call some system functions as listed below.
> I would think the problem is caused by interrupts not being
> correctly separated when happening too frequently.
> That would cause ioctl or write to D/A to cause an error.
> It could also be a problem related to the Linrad error
> handling which still to some extent has 'memories' of
> being parts of a simple single threaded structure. If that
> is the problem, the dumpfile (see 11 below) will clearly
> show it.

<snip>

Thank you very much for your detailed info about the functions in 
xlinrad code. Unfortunately, I do not understand how Linrad works. :-( 
Attached below is the dmp file after setting DUMPFILE to 1.


> I am right now downloading Debian Sarge to try to reproduce
> the bug. It might be related to ALSA and I have no idea how
> ALSA might differ to Debian Etch.

Ok, good luck with your Sarge install. I will wait for your results and 
I will be ready for any tests you need here on this machine.

73, Ramiro, EA1ABZ.





******************************
fft1,fft2: 1.2 Megabytes(27 arrays)
fft1_bytes 524288    ui.rx_channels=1   ui.ad_channels=1
NOT DWORD INPUT    NOT IQ DATA  ad_read_bytes 1024  interrupt_rate 86.1
fft1_n 10    fft1_size 1024   interleave (_ratio 0.562500  _points 576)
fft1mode 0   bytes_per_fragment 2
timf1_blockbytes 1792   fft1_blockbytes 8192
timf1_bytes 32768   fft1_bytes 524288
max_fft1_sumsq 63
fft1win (N) 3
mix1_size 64
fft2_size 0
timf3_size 32768
timf3_sampling_speed 1378.125000
~


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