On 28/08/12 09:21, Qing Yang wrote:
Hi everyone,
Where can I find a concrete example on how to profile the gnuradio code
in Python?
Hi,
I've just read about timeit in an article, not sure if it fits your
neeeds, but just in case:
http://docs.python.org/library/timeit.html
Chris
My PC is Linux 2.6.35-32-generic-pae #67-Ubuntu SMP Mon Mar 5 21:23:19
UTC 2012 i686 GNU/Linux. I use Ubuntu 10.10 and Xeon W3530.
I can use Kcachegrind to profile code written in C++. But when I profile
python code(e.g., dial_tone.py), there is no profile data output.
address@hidden:~/Public$ valgrind --tool=callgrind ./dial_tone.py
==30385== Callgrind, a call-graph generating cache profiler
==30385== Copyright (C) 2002-2010, and GNU GPL'd, by Josef Weidendorfer
et al.
==30385== Using Valgrind-3.6.0.SVN-Debian and LibVEX; rerun with -h for
copyright info
==30385== Command: ./dial_tone.py
==30385==
==30385== For interactive control, run 'callgrind_control -h'.
address@hidden:~/Public$ ls -l
total 12
-rw------- 1 yangqing yangqing 0 2012-08-27 16:29
callgrind.out.30385 ** the size of profile data is 0? **
-rwxr-xr-x 1 yangqing yangqing 2006 2012-07-05 16:37 dial_tone.py
-rwxr-xr-x 1 yangqing yangqing 249 2012-08-27 16:22 mainloop.py
drwxr-xr-x 25 yangqing yangqing 4096 2012-08-27 00:23 oprofile
Then I try Oprofile, but also failed :(
address@hidden:~/Public$ sudo opcontrol --init
address@hidden:~/Public$ sudo opcontrol --setup --no-vmlinux
address@hidden:~/Public$ sudo opcontrol --start
ATTENTION: Use of opcontrol is discouraged. Please see the man page for
operf.
Using default event: CPU_CLK_UNHALTED:100000:0:1:1
Using 2.6+ OProfile kernel interface.
Using log file /var/lib/oprofile/samples/oprofiled.log
Daemon started.
Profiler running.
address@hidden:~/Public$ sudo opcontrol --reset
Signalling daemon... done
address@hidden:~/Public$ ./dial_tone.py
address@hidden:~/Public$ sudo opcontrol --dump
address@hidden:~/Public$ sudo opcontrol --shutdown
Stopping profiling.
Killing daemon.
address@hidden:~/Public$ opreport -l dial_tone.py
Using /var/lib/oprofile/samples/ for samples directory.
error: no sample files found: profile specification too strict ? **
can't find the profile data? **
and I try
address@hidden:~/Public$ opreport -l|less
CPU: Intel Core/i7, speed 2.794e+06 MHz (estimated)
Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a
unit mask of 0x00 (No unit mask) count 100000
samples % image name app name
symbol name
97293 44.4076 no-vmlinux no-vmlinux
/no-vmlinux
43324 19.7744 nvidia_drv.so nvidia_drv.so
/usr/lib/nvidia-173/xorg/nvidia_drv.so
23189 10.5842 chromium-browser chromium-browser
/usr/lib/chromium-browser/chromium-browser
8264 3.7719 libpixman-1.so.0.18.4 libpixman-1.so.0.18.4
/usr/lib/libpixman-1.so.0.18.4
5975 2.7272 libglib-2.0.so.0.2600.1 libglib-2.0.so.0.2600.1
/lib/libglib-2.0.so.0.2600.1
4409 2.0124 libgobject-2.0.so.0.2600.1 libgobject-2.0.so.0.2600.1
/usr/lib/libgobject-2.0.so.0.2600.1
3811 1.7395 libcairo.so.2.11000.0 libcairo.so.2.11000.0
/usr/lib/libcairo.so.2.11000.0
3001 1.3698 libpangoft2-1.0.so.0.2800.2
libpangoft2-1.0.so.0.2800.2 /usr/lib/libpangoft2-1.0.so.0.2800.2
2714 1.2388 python2.6 python2.6
/usr/bin/python2.6
2083 0.9507 libdbus-1.so.3.5.2 libdbus-1.so.3.5.2
/lib/libdbus-1.so.3.5.2
2003 0.9142 libwfb.so libwfb.so
/usr/lib/xorg/modules/libwfb.so
1969 0.8987 Xorg Xorg
/usr/bin/Xorg
1894 0.8645 libgtk-x11-2.0.so.0.2200.0 libgtk-x11-2.0.so.0.2200.0
/usr/lib/libgtk-x11-2.0.so.0.2200.0
1732 0.7905 libgnuradio-core-3.5.2git.so.0.0.0
libgnuradio-core-3.5.2git.so.0.0.0 gr_sig_source_f::work(int,
std::vector<void const*, std::allocat
or<void const*> >&, std::vector<void*, std::allocator<void*> >&)
1578 0.7202 libgdk-x11-2.0.so.0.2200.0 libgdk-x11-2.0.so.0.2200.0
/usr/lib/libgdk-x11-2.0.so.0.2200.0
1378 0.6290 libpango-1.0.so.0.2800.2 libpango-1.0.so.0.2800.2
/usr/lib/libpango-1.0.so.0.2800.2
962 0.4391 [vdso] (tgid:1237 range:0xb77ec000-0xb77ed000) Xorg
[vdso] (tgid:1237 range:0xb77ec000-0xb77ed000)
802 0.3661 libpthread-2.12.1.so <http://libpthread-2.12.1.so/>
libpthread-2.12.1.so <http://libpthread-2.12.1.so/> pthread_mutex_lock
690 0.3149 libc-2.12.1.so <http://libc-2.12.1.so/> libc-2.12.1.so
<http://libc-2.12.1.so/> __memcpy_ssse3_rep
640 0.2921 libpthread-2.12.1.so <http://libpthread-2.12.1.so/>
libpthread-2.12.1.so <http://libpthread-2.12.1.so/>
__pthread_mutex_unlock_usercnt
459 0.2095 libX11.so.6.3.0 libX11.so.6.3.0
/usr/lib/libX11.so.6.3.0
444 0.2027 libQtGui.so.4.7.0 libQtGui.so.4.7.0
/usr/lib/libQtGui.so.4.7.0
409 0.1867 libc-2.12.1.so <http://libc-2.12.1.so/> libc-2.12.1.so
<http://libc-2.12.1.so/> _int_malloc
354 0.1616 librt-2.12.1.so <http://librt-2.12.1.so/>
librt-2.12.1.so <http://librt-2.12.1.so/> clock_gettime
341 0.1556 libc-2.12.1.so <http://libc-2.12.1.so/> libc-2.12.1.so
<http://libc-2.12.1.so/> __memset_sse2_rep
337 0.1538 libgnuradio-audio-3.5.2git.so.0.0.0
libgnuradio-audio-3.5.2git.so.0.0.0 audio_alsa_sink::work_s32(int,
std::vector<void const*, std::allocator<void const*> >&,
std::vector<void*, std::allocator<void*> >&)
332 0.1515 anon (tgid:25090 range:0x4fc0a000-0x4fcff000)
chromium-browser anon (tgid:25090 range:0x4fc0a000-0x4fcff000)
322 0.1470 libc-2.12.1.so <http://libc-2.12.1.so/> libc-2.12.1.so
<http://libc-2.12.1.so/> __strcmp_sse4_2
237 0.1082 oprofiled oprofiled
odb_update_node_with_offset
230 0.1050 libpangocairo-1.0.so.0.2800.2
libpangocairo-1.0.so.0.2800.2 /usr/lib/libpangocairo-1.0.so.0.2800.2
224 0.1022 libpthread-2.12.1.so <http://libpthread-2.12.1.so/>
libpthread-2.12.1.so <http://libpthread-2.12.1.so/> pthread_getspecific
223 0.1018 libstdc++.so.6.0.14 libstdc++.so.6.0.14
/usr/lib/libstdc++.so.6.0.14
214 0.0977 libxcb.so.1.1.0 libxcb.so.1.1.0
/usr/lib/libxcb.so.1.1.0
210 0.0959 metacity metacity
/usr/bin/metacity
204 0.0931 libc-2.12.1.so <http://libc-2.12.1.so/> libc-2.12.1.so
<http://libc-2.12.1.so/> fgetc
180 0.0822 ld-2.12.1.so <http://ld-2.12.1.so/> ld-2.12.1.so
<http://ld-2.12.1.so/> do_lookup_x
168 0.0767 libc-2.12.1.so <http://libc-2.12.1.so/> libc-2.12.1.so
<http://libc-2.12.1.so/> __i686.get_pc_thunk.bx
165 0.0753 libc-2.12.1.so <http://libc-2.12.1.so/> libc-2.12.1.so
<http://libc-2.12.1.so/> _IO_vfscanf
163 0.0744 ibus-daemon ibus-daemon
/usr/bin/ibus-daemon
... ....
I can't find my thread of dial_tone.py. I guess I use Oprofile in the
wrong way, could you give me some tips?
Sincerely,
--
Yang, Qing
Information Engineering, CUHK
This body part will be downloaded on demand.
--
Christian Gagneraud,
Embedded systems engineer.
Techworks Marine
1 Harbour road
Dun Laoghaire
Co. Dublin
Ireland
Tel: + 353 (0) 1 236 5990
Web: http://www.techworks.ie/
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