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Diffstat (limited to 'boottime_tools/bootio/README.md')
| -rw-r--r-- | boottime_tools/bootio/README.md | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/boottime_tools/bootio/README.md b/boottime_tools/bootio/README.md new file mode 100644 index 00000000..ca075ded --- /dev/null +++ b/boottime_tools/bootio/README.md @@ -0,0 +1,24 @@ +# bootio # + +The bootio tool records I/O for processes during boot. +To use bootio kernel must be compiled with this flags: + + CONFIG_TASKSTATS=y + CONFIG_TASK_DELAY_ACCT=y + CONFIG_TASK_XACCT=y + CONFIG_TASK_IO_ACCOUNTING=y + +To use bootio make sure it's included in product config for the board. +Create file /data/misc/bootio/start with a command like the following: + + adb shell 'echo "$TIMEOUT $SAMPLES" > /data/misc/bootio/start' + +Where the value of $TIMEOUT corresponds to the desired bootio period in +seconds and $SAMPLES corresponds to the desired number of samples. + +Note: /data/misc/bootio/start is not deleted automatically, so don't +forget to delete it when you're done collecting data. + +To see collected logs run: + + adb shell bootio -p |