Hi
,
I
recently noticed that all modulator blocks like qam psk gmsk
... have one similar problem , they consume high percent of
CPU even when i connect a throttle to output of those . they
consume a certain amount of CPU time (17%) and it doesn't
change when i set throttle to 1k 10k 100k or even 10ms in the
other word throttle in output doesn't work at all . PLS see
first attached pic .
After
digging around in source codes i noticed a common problem of
them are last stage of modulators when connected
to pfb_arb_resampler_ccf , i tested Polyphase Arbitary
Resampler just alone and it have exactly similar problem . PLS
see second attached pic .
It
doesn't make any difference if i remove the throttle block and
connect flow graph to a sink hardware for limiting sample rate
it eat cpu in any case . some thing is wrong with Polyphase
Arbitary Resampler block .
Cheers
.