Thanks - I am running an quad-core Intel I5 laptop. It is running Ubuntu 13.10. I also have it running on a VM on my 8 Core I7 Macbook.
Do you have any pointers or links on using oprofile with gnuradio? I found some material on using GR Performance Counters, but I haven't had a chance to try. I am going to working on learning how to profile using the VM. In the meantime, I rolled back the bare metal machine so I can keep my site up. I installed 3.7 using the build-gnuradio script. When I reinstalled 3.6.5, also using build-gnuradio, the performance was still high. I am wondering if it actually has something to do with libraries being upgraded. I know the script upgraded me from Boost 1.49 to 1.53. Are there some other libraries that could have a perf impact? ITPP? On Mon, Mar 24, 2014 at 11:35 AM, West, Nathan <n...@ostatemail.okstate.edu>wrote: > On Mon, Mar 24, 2014 at 7:17 AM, Luke Berndt <luk...@gmail.com> wrote: > > Hi - I just upgraded to 3.7.3 using the build-gnuradio script from > 3.6.5.1. > > I am using it to run a C++ App that captures all the radio > communications on > > a Moto SmartNet system. I upgraded all my code to work with the 3.7 > naming > > scheme and got everything to compile and run. Everything runs in 3.7, > but I > > am seeing a lot more CPU usage, almost a whole additional core. > > > > Are there an obvious things I should check where blocks changed > > significantly from 3.6 to 3.7? > > > > The main code is here: > > https://github.com/robotastic/smartnet-recorder/tree/3.7 > > > > And the codec is here: > > https://github.com/robotastic/gr-dsd/tree/3.7 > > > > I put together the general flow graph below. Are there any blocks where I > > could be shooting myself in the foot? Is it better to do xlating or > > sig_source & multiply_cc? The source bandwidth is 5MHz. > > > > Decode Control Channel: [ > > https://github.com/robotastic/smartnet-recorder/blob/3.7/smartnet.cc ] > > multiply_cc ( OsmoSDR(HackRF) + analog::sig_source_c ) > > gr::filter::fir_filter_ccf > > gr::digital::fll_band_edge_cc > > gr::analog::pll_freqdet_cf > > gr::digital::clock_recovery_mm_ff > > gr::digital::binary_slicer_fb > > gr::digital::correlate_access_code_tag_bb > > smartnet_deinterleave > > smartnet_crc > > > > Decode digital voice channel: [ > > > https://github.com/robotastic/smartnet-recorder/blob/3.7/logging_receiver_dsd.cc > > ] > > tb->connect( OsmoSDR(HackRF) ) > > gr::filter::freq_xlating_fir_filter_ccf > > gr::filter::rational_resampler_base_ccf > > gr::analog::quadrature_demod_cf > > gr::filter::fir_filter_fff > > dsd_make_block_ff [ > > https://github.com/robotastic/gr-dsd/blob/3.7/lib/dsd_block_ff.cc ] > > gr::blocks::wavfile_sink > > > > > > > > > > What processor and OS are you running on? I suggest you start by > profiling your flowgraphs with something like oprofile/perf or control > port. Profiling with 3.7 is the first step and may be all that's > necessary if something really stands out, otherwise comparing results > of 3.6.5.1 and 3.7 would be good. > > I'd be interested in seeing your results. > > > Nathan >
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