29.5.3. モジュールでの詳細な出力の取得

opcontrol --reset

~]# opcontrol --reset

opcontrol --setup --vmlinux=/usr/lib/debug/lib/modules/`uname -r`/vmlinux --event=CPU_CLK_UNHALTED:500000

~]# opcontrol --setup --vmlinux=/usr/lib/debug/lib/modules/`uname -r`/vmlinux --event=CPU_CLK_UNHALTED:500000

opreport /ext4 -l --image-path /lib/modules/`uname -r`/kernel

~]# opreport /ext4 -l --image-path /lib/modules/`uname -r`/kernel
CPU: Intel Westmere microarchitecture, speed 2.667e+06 MHz (estimated)
Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a unit mask of 0x00 (No unit mask) count 500000
warning: could not check that the binary file /lib/modules/2.6.32-191.el6.x86_64/kernel/fs/ext4/ext4.ko has not been modified since the profile was taken. Results may be inaccurate.
samples  %        symbol name
1622      9.8381  ext4_iget
1591      9.6500  ext4_find_entry
1231      7.4665  __ext4_get_inode_loc
783       4.7492  ext4_ext_get_blocks
752       4.5612  ext4_check_dir_entry
644       3.9061  ext4_mark_iloc_dirty
583       3.5361  ext4_get_blocks
583       3.5361  ext4_xattr_get
479       2.9053  ext4_htree_store_dirent
469       2.8447  ext4_get_group_desc
414       2.5111  ext4_dx_find_entry