Re: Error happens when using command "opreport -lc"

[BruceSong <bru...@gm...>]

Hi Maynard,

Thanks for your quick reply. 

I  search some information in this forum, and find that maybe I need
recompile the oprofile using the latest binutils package, especially with
libbfd.a. So I recompile again. Now it works. 

Thanks!
Bruce



Maynard Johnson wrote:
> 
> BruceSong wrote:
>> 
>> Hi,
>> 
>> I am a new learner for oprofile. Those day, I use it to test my binary.
>> But
>> i meet some problems, here is the detailed steps:
>> 
>> [brucehuang@rat013:~/Desktop/ToolAssessment/oprofile]$ uname -r
>> 2.6.18-128.el5PAE
>> 
>> [brucehuang@rat013:~/Desktop/ToolAssessment/oprofile]$ ls /dev/oprofile/
>> 0  1  backtrace_depth  buffer  buffer_size  buffer_watershed 
>> cpu_buffer_size  cpu_type  dump  enable  pointer_size  stats
>> 
>> [brucehuang@rat013:~/Desktop/ToolAssessment/oprofile]$ more
>> /dev/oprofile/cpu_type 
>> i386/core_2
>> 
>> [brucehuang@rat013:~/dev/workspace/CAPC2]$ ophelp -v
>> ophelp: oprofile 0.9.6 compiled on Jun 22 2010 17:28:26
>> 
>> [brucehuang@rat013:~/Desktop/ToolAssessment/oprofile]$ sudo opcontrol
>> --init
>> 
>> [brucehuang@rat013:~/Desktop/ToolAssessment/oprofile]$ sudo opcontrol
>> --start --verbose
>> Parameters used:
>> SESSION_DIR /var/lib/oprofile
>> LOCK_FILE /var/lib/oprofile/lock
>> SAMPLES_DIR /var/lib/oprofile/samples
>> CURRENT_SAMPLES_DIR /var/lib/oprofile/samples/current
>> CPUTYPE i386/core_2
>> BUF_SIZE default value
>> BUF_WATERSHED default value
>> CPU_BUF_SIZE default value
>> SEPARATE_LIB 1
>> SEPARATE_KERNEL 0
>> SEPARATE_THREAD 0
>> SEPARATE_CPU 0
>> CALLGRAPH 4
>> VMLINUX none
>> KERNEL_RANGE
>> XENIMAGE none
>> XEN_RANGE
>> executing oprofiled --session-dir=/var/lib/oprofile --separate-lib=1
>> --separate-kernel=0 --separate-thread=0 --separate-cpu=0
>> --events=CPU_CLK_UNHALTED:60:0:100000:0:1:1, --no-vmlinux --verbose=all
>> Events: CPU_CLK_UNHALTED:60:0:100000:0:1:1,
>> Using 2.6+ OProfile kernel interface.
>> Using log file /var/lib/oprofile/samples/oprofiled.log
>> Daemon started.
>> Profiler running.
>> 
>> [brucehuang@rat013:~/Desktop/ToolAssessment/oprofile]$ ./a.out 1                                   
>> This is a test 
>> arg[1]=1
>> ++1++
>> ++1++
>> 
>> [brucehuang@rat013:~/Desktop/ToolAssessment/oprofile]$ opreport|less
>> CPU: Core 2, speed 2800 MHz (estimated)
>> Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a
>> unit
>> mask of 0x00 (Unhalted core cycles) count 100000
>> CPU_CLK_UNHALT...|
>>   samples|      %|
>> ------------------
>>   4693115 49.3060 a.out
>>         CPU_CLK_UNHALT...|
>>           samples|      %|
>>         ------------------
>>           4369967 93.1144 libc-2.5.so
>>            322982  6.8820 a.out
>>                77  0.0016 [vdso] (tgid:6181 range:0x9f7000-0x9f8000)
>>                76  0.0016 [vdso] (tgid:7370 range:0xd90000-0xd91000)
>>                12 2.6e-04 ld-2.5.so
>>                 1 2.1e-05 [vdso] (tgid:9493 range:0x8ad000-0x8ae000)
>> ......
>> 
>> [brucehuang@rat013:~/Desktop/ToolAssessment/oprofile]$ opreport -lc
>> /home/brucehuang/Desktop/ToolAssessment/oprofile/a.out|less
>> warning: [vdso] (tgid:6181 range:0x9f7000-0x9f8000) could not be found.
>> warning: [vdso] (tgid:7370 range:0xd90000-0xd91000) could not be found.
>> warning: [vdso] (tgid:9493 range:0x8ad000-0x8ae000) could not be found.
>> CPU: Core 2, speed 2800 MHz (estimated)
>> Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a
>> unit
>> mask of 0x00 (Unhalted core cycles) count 100000
> 
> So your opreport output just ends here . . .-----^  ?  Try running
> 'opreport -l --verbose=all'.
> 
> -Maynard
> 
>> 
>> So it is clear that the last step appears error. Error happens when I use
>> -l
>> to lit per-symbol information instead of a binary image summary or use -c
>> to
>> show callgraph information. 
>> Would you please help me? Thanks very much in advance!
>> 
>> Best regards,
>> Bruce.Huang
>> 
> 
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