If you're familiar with the output produced by GNU gprof,
you may find opgprof useful. It takes a single binary
as an argument, and produces a gmon.out file for use
with gprof -p. If call-graph profiling is enabled,
then this is also included.
$ opgprof `which oprofiled` # generates gmon.out file $ gprof -p `which oprofiled` | head Flat profile: Each sample counts as 1 samples. % cumulative self self total time samples samples calls T1/call T1/call name 33.13 206237.00 206237.00 odb_insert 22.67 347386.00 141149.00 pop_buffer_value 9.56 406881.00 59495.00 opd_put_sample 7.34 452599.00 45718.00 opd_find_image 7.19 497327.00 44728.00 opd_process_samples |
--help / -? / --usage
Show help message.
--image-path / -p [paths]
Comma-separated list of additional paths to search for binaries. This is needed to find kernel modules.
--root / -R [path]
A path to a filesystem to search for additional binaries.
--output-filename / -o [file]
Output to the given file instead of the default, gmon.out
--threshold / -t [percentage]
Only output data for symbols that have more than the given percentage of total samples.
--verbose / -V [options]
Give verbose debugging output.
--session-dir=dir_path
Use sample database from the specified directory dir_path instead
of the default location. If this option is not specified, then opgprof will search for
samples in <cur_dir>/oprofile_data
first. If that directory does not exist, the standard session-dir of
/var/lib/oprofile is used
as the session directory.
--version / -v
Show version.