Re: [Discuss-gnuradio] Profile gr python code using Oprofile and Kcachegrind

[Tom Rondeau]

On Tue, Aug 28, 2012 at 4:21 AM, Qing Yang <address@hidden> wrote:
> Hi everyone,
>
> Where can I find a concrete example on how to profile the gnuradio code in
> Python?
>
> 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

Qing,

Try this:

address@hidden:~/Public$ valgrind --tool=callgrind python ./dial_tone.py

I've used callgrind with Python before, but you need to explicitly
call it through the interpreter for callgrind to catch on. I _think_
this works, but it's just from memory. If it doesn't, Google callgrind
and Python; I know the answer is out there.

Tom


> ==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     libpthread-2.12.1.so
> pthread_mutex_lock
> 690       0.3149  libc-2.12.1.so           libc-2.12.1.so
> __memcpy_ssse3_rep
> 640       0.2921  libpthread-2.12.1.so     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           libc-2.12.1.so
> _int_malloc
> 354       0.1616  librt-2.12.1.so          librt-2.12.1.so
> clock_gettime
> 341       0.1556  libc-2.12.1.so           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           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     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           libc-2.12.1.so           fgetc
> 180       0.0822  ld-2.12.1.so             ld-2.12.1.so
> do_lookup_x
> 168       0.0767  libc-2.12.1.so           libc-2.12.1.so
> __i686.get_pc_thunk.bx
> 165       0.0753  libc-2.12.1.so           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
>
>
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