diff options
Diffstat (limited to 'Documentation/basic_profiling.txt')
-rw-r--r-- | Documentation/basic_profiling.txt | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Documentation/basic_profiling.txt b/Documentation/basic_profiling.txt index 65e3dc2d4437..8764e9f70821 100644 --- a/Documentation/basic_profiling.txt +++ b/Documentation/basic_profiling.txt | |||
@@ -27,9 +27,13 @@ dump output readprofile -m /boot/System.map > captured_profile | |||
27 | 27 | ||
28 | Oprofile | 28 | Oprofile |
29 | -------- | 29 | -------- |
30 | Get the source (I use 0.8) from http://oprofile.sourceforge.net/ | 30 | |
31 | and add "idle=poll" to the kernel command line | 31 | Get the source (see Changes for required version) from |
32 | http://oprofile.sourceforge.net/ and add "idle=poll" to the kernel command | ||
33 | line. | ||
34 | |||
32 | Configure with CONFIG_PROFILING=y and CONFIG_OPROFILE=y & reboot on new kernel | 35 | Configure with CONFIG_PROFILING=y and CONFIG_OPROFILE=y & reboot on new kernel |
36 | |||
33 | ./configure --with-kernel-support | 37 | ./configure --with-kernel-support |
34 | make install | 38 | make install |
35 | 39 | ||
@@ -46,7 +50,7 @@ start opcontrol --start | |||
46 | stop opcontrol --stop | 50 | stop opcontrol --stop |
47 | dump output opreport > output_file | 51 | dump output opreport > output_file |
48 | 52 | ||
49 | To only report on the kernel, run opreport /boot/vmlinux > output_file | 53 | To only report on the kernel, run opreport -l /boot/vmlinux > output_file |
50 | 54 | ||
51 | A reset is needed to clear old statistics, which survive a reboot. | 55 | A reset is needed to clear old statistics, which survive a reboot. |
52 | 56 | ||