OPROFILE无法获得性能数据

Question

我正在使用OPROFILE来收集一些性能数据.但我陷入困境.

这是我的shell:

~ # rm -f /root/.oprofile/daemonrc
~ # opcontrol --setup --no-vmlinux
~ # opcontrol --init
~ # opcontrol --reset
~ # opcontrol --start
~ # opcontrol --status

Daemon running: pid 14909    
Separate options: none
vmlinux file: none    
Image filter: none    
Call-graph depth: 0

~ # opcontrol --shutdown

Stopping profiling.
Killing daemon.

~ # opreport

error: no sample files found: profile specification too strict?

~ # tree /var/lib/oprofile/

/var/lib/oprofile/
??? abi
??? complete_dump
??? jitdump
??? opd_pipe
??? samples
    ??? current
    ?   ??? stats
    ?       ??? bt_lost_no_mapping
    ?       ??? cpu0
    ?       ?   ??? backtrace_aborted
    ?       ?   ??? sample_invalid_eip
    ?       ?   ??? sample_lost_overflow
    ?       ?   ??? sample_received
    ?       ??? event_lost_overflow
    ?       ??? multiplex_counter
    ?       ??? sample_lost_no_mapping
    ?       ??? sample_lost_no_mm
    ??? oprofiled.log


5 directories, 13 files

~ # dmesg |grep oprofile

oprofile: using NMI interrupt.


~ # uname -a

Linux localhost.localdomain 2.6.32-220.4.2.el6.x86_64 #1 SMP Tue Feb 14 04:00:16 GMT 2012 x86_64 x86_64 x86_64 GNU/Linux

~ # cat /proc/cpuinfo 

processor   : 0    
vendor_id   : GenuineIntel   
cpu family  : 6    
model       : 44    
model name  : Intel(R) Xeon(R) CPU           E5620  @ 2.40GHz   
stepping    : 2    
cpu MHz     : 2400.085   
cache size  : 12288 KB   
fpu     : yes    
fpu_exception   : yes    
cpuid level : 11    
wp      : yes   
flags       : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss syscall nx rdtscp lm constant_tsc up arch_perfmon pebs bts xtopology tsc_reliable nonstop_tsc aperfmperf unfair_spinlock pni pclmulqdq ssse3 cx16 sse4_1 sse4_2 popcnt aes hypervisor lahf_lm ida arat epb dts    
bogomips    : 4800.17    
clflush size    : 64   
cache_alignment : 64   
address sizes   : 40 bits physical, 48 bits virtual   
power management:

Answer 1

我在基于 RHEL6 的发行版上遇到了类似的问题。在某个时候，我开始使用perf，通过它我可以获得分析器报告和带注释的源代码。