Forum: GNU Radio Clock block slow in position satellite calculation

4759c0b9477f73dcf5aa12d5b901571a?d=identicon&s=25 caruiz.ext (Guest)
on 2014-06-10 09:26
(Received via mailing list)
Hello,

I have this flowgraph in GNURadio:
http://i1281.photobucket.com/albums/a515/Carlos_Al...

-> Green: calculates the signal delay of a satellite.
-> Yellow: a clock with a second precision.

If I run the clock separately I can see in the WX GUI Number Sink that
it works. (0,1,2,3,4... each second)
But if I run the entire flowgraph I can see in the WX GUI Number Sink
that clock becomes very slow. (0,1,2,3,4... each 2 second approximately)


Why is this? Any solution?

Thank you ;)
D17685d174fee4ca258c75cce7bc2202?d=identicon&s=25 Marcus Müller (Guest)
on 2014-06-10 09:53
(Received via mailing list)
Hi!
You shouldn't use so many throttles in one flow graph; throttle limits
the number of samples going through in a given time, and as soon as the
"upstream" blocks have filled their output buffer, they will be limited
in throughput, too.
So I guess this is the effect of throttles blocking each other; however,
I don't really understand what's happening inside your flowgraph, so
this is a lot of guesswork.

Greetings,
Marcus
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