Red Hat ENTERPRISE LINUX 5 - VIRTUAL SERVER ADMINISTRATION, Руководство по развертыванию

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Using
opreport
on a Single Executable
543
3 5.3571 _dl_mcount_wrapper_check
3 5.3571 mbrtowc
3 5.3571 memcpy
2 3.5714 _int_realloc
2 3.5714 _nl_intern_locale_data
2 3.5714 free
2 3.5714 strcmp
1 1.7857 __ctype_get_mb_cur_max
1 1.7857 __unregister_atfork
1 1.7857 __write_nocancel
1 1.7857 _dl_addr
1 1.7857 _int_free
1 1.7857 _itoa_word
1 1.7857 calc_eclosure_iter
1 1.7857 fopen@@GLIBC_2.1
1 1.7857 getpid
1 1.7857 memmove
1 1.7857 msort_with_tmp
1 1.7857 strcpy
1 1.7857 strlen
1 1.7857 vfprintf
1 1.7857 write
The first column is the number of samples for the symbol, the second column is the percentage of
samples for this symbol relative to the overall samples for the executable, and the third column is
the symbol name.
To sort the output from the largest number of samples to the smallest (reverse order), use
-r
in
conjunction with the
-l
option.
-i <symbol-name>
List sample data specific to a symbol name. For example, the following output is from the
command
opreport -l -i __gconv_transform_utf8_internal /lib/tls/
libc- <version> .so
:
samples % symbol name
12 100.000 __gconv_transform_utf8_internal
The first line is a summary for the symbol/executable combination.
The first column is the number of samples for the memory symbol. The second column is the
percentage of samples for the memory address relative to the total number of samples for the
symbol. The third column is the symbol name.
-d
List sample data by symbols with more detail than
-l
. For example, the following output is from
the command
opreport -l -d __gconv_transform_utf8_internal /lib/tls/
libc- <version> .so
:
vma samples % symbol name
00a98640 12 100.000 __gconv_transform_utf8_internal
00a98640 1 8.3333
00a9868c 2 16.6667
00a9869a 1 8.3333
00a986c1 1 8.3333
00a98720 1 8.3333