Re: [Discuss-gnuradio] Profiling GNU Radio flow graphs

2012-08-23 Thread Qing Yang
Hi Felix, Currently I also need to profile and optimize my system. Now I just add some some sentences to print the processing time of each block, but this is definitely not a good method. Could you describe your profiling method in more details, perhaps your results can be a reference for me. Hi

Re: [Discuss-gnuradio] 2 RTL-SDR dongles at the same time with GRC

2012-08-23 Thread Rafael Diniz
Concerning the B issue, may be you could synchronize the input sample stream using an external reference pulse received by both sticks at the same time? Best, Rafael Diniz > On 08/23/2012 05:51 PM, Alberto Trentadue wrote: >> Hello >> >> I am considering using 2 RTL SDR compliant dongles + GRC fo

Re: [Discuss-gnuradio] 2 RTL-SDR dongles at the same time with GRC

2012-08-23 Thread Marcus D. Leech
On 08/23/2012 05:51 PM, Alberto Trentadue wrote: Hello I am considering using 2 RTL SDR compliant dongles + GRC for some simple interferometric application. Having two of such dongles, does anybody know if it is possible to have both running as GRC sources? If not, would it be possible in theo

[Discuss-gnuradio] 2 RTL-SDR dongles at the same time with GRC

2012-08-23 Thread Alberto Trentadue
Hello I am considering using 2 RTL SDR compliant dongles + GRC for some simple interferometric application. Having two of such dongles, does anybody know if it is possible to have both running as GRC sources? If not, would it be possible in theory (to be developed) or there is a strict archit

Re: [Discuss-gnuradio] Profiling GNU Radio flow graphs

2012-08-23 Thread Tim
kcachegrind is also a great tool to look at http://kcachegrind.sourceforge.net/html/Shot3Large.html On 08/23/2012 12:53 PM, wun...@int.uni-karlsruhe.de wrote: > After some googling and searching the archives I stumbled upon oprofile > which looks quite nice to me. However, a first try did not rea

[Discuss-gnuradio] get_gpio() help

2012-08-23 Thread sibar002
Hello, I am trying to work with the read_gpio() function that is found in the dboard_iface.cpp file. I am trying to read the io_rx[15 - 0] pins on the basic_rx daughterboard. I am able to read the pins using this function one time, but I am unable to continuously read the pins. Could anyone give

[Discuss-gnuradio] Profiling GNU Radio flow graphs

2012-08-23 Thread wunsch
Hi all, I am currently trying to optimize the performance of my DRM transmitter and for this purpose I want to profile my flow graphs. After some googling and searching the archives I stumbled upon oprofile which looks quite nice to me. However, a first try did not really provide very significant

Re: [Discuss-gnuradio] Audio sink does not throttle sample flow

2012-08-23 Thread Felix Wunsch
Am 22.08.2012 00:09, schrieb Tom Rondeau: On Mon, Aug 13, 2012 at 12:25 PM, Felix Wunsch wrote: Am 13.08.2012 13:33, schrieb Tom Rondeau: On Mon, Aug 13, 2012 at 5:05 AM, Felix Wunsch wrote: Am 12.08.2012 19:19, schrieb Tom Rondeau: On Tue, Aug 7, 2012 at 6:22 AM, Felix Wunsch wrote: Hi