On Tue, Jan 3, 2012 at 7:41 PM, Marcus D. Leech <[email protected]> wrote:
> Decided this evening to grab some quick profile data for a uhd_fft.py, > running at 50Msps from a USRP2. > > The kernel was occupied 41% of the time--no great surprise. Handling > interrupts, doing the network stack "stuff". > > The next largest chunk was libc (memcpy_sse) 12.5% > Then uhd (convert_sc8_item32_1_to_fcxx_**1) 11.4% > Then libpython > 9.8% > Then libgnuradio-core 7.5% > > So, the big surprise there was that libpython was so high on the list, > since Python isn't used in copying data within the flow-graph. I didn't > get any symbol information for libpython, so I wonder what it is doing > all that time? > > > -- > Marcus Leech > Principal Investigator > Shirleys Bay Radio Astronomy Consortium > http://www.sbrac.org The uhd_fft.py uses the wxPython GUI interface, which does most of its work in Python. Can you separate the symbols to see more specifically where the processing is happening? Tom
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