diff options
Diffstat (limited to 'init/README.BOOTCHART')
| -rw-r--r-- | init/README.BOOTCHART | 22 |
1 files changed, 8 insertions, 14 deletions
diff --git a/init/README.BOOTCHART b/init/README.BOOTCHART index 70cf2c3..245e452 100644 --- a/init/README.BOOTCHART +++ b/init/README.BOOTCHART @@ -1,37 +1,31 @@ This version of init contains code to perform "bootcharting", i.e. generating log files that can be later processed by the tools provided by www.bootchart.org. -To activate it, you need to define build 'init' with the INIT_BOOTCHART environment -variable defined to 'true', for example: - - touch system/init/init.c - m INIT_BOOTCHART=true - On the emulator, use the new -bootchart <timeout> option to boot with bootcharting activated for <timeout> seconds. Otherwise, flash your device, and start it. Then create a file on the /data partition with a command like the following: - adb shell 'echo $TIMEOUT > /data/bootchart-start' + adb shell 'echo $TIMEOUT > /data/bootchart/start' Where the value of $TIMEOUT corresponds to the wanted bootcharted period in seconds; for example, to bootchart for 2 minutes, do: - adb shell 'echo 120 > /data/bootchart-start' + adb shell 'echo 120 > /data/bootchart/start' Reboot your device, bootcharting will begin and stop after the period you gave. You can also stop the bootcharting at any moment by doing the following: - adb shell 'echo 1 > /data/bootchart-stop' + adb shell 'echo 1 > /data/bootchart/stop' -Note that /data/bootchart-stop is deleted automatically by init at the end of the -bootcharting. This is not the case of /data/bootchart-start, so don't forget to delete it +Note that /data/bootchart/stop is deleted automatically by init at the end of the +bootcharting. This is not the case of /data/bootchart/start, so don't forget to delete it when you're done collecting data: - adb shell rm /data/bootchart-start + adb shell rm /data/bootchart/start -The log files are placed in /data/bootchart/. you must run the script tools/grab-bootchart.sh +The log files are placed in /data/bootchart/. You must run the script tools/grab-bootchart.sh which will use ADB to retrieve them and create a bootchart.tgz file that can be used with the bootchart parser/renderer, or even uploaded directly to the form located at: @@ -47,6 +41,6 @@ NOTE: the bootchart.org webform doesn't seem to work at the moment, you can gene technical note: -this implementation of bootcharting does use the 'bootchartd' script provided by +This implementation of bootcharting does not use the 'bootchartd' script provided by www.bootchart.org, but a C re-implementation that is directly compiled into our init program. |