On Tue, Jan 3, 2012 at 7:41 PM, Marcus D. Leech
<address@hidden> 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