> ==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
>
>