1# bootio #
2
3The bootio tool records I/O for processes during boot.
4To use bootio kernel must be compiled with this flags:
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6    CONFIG_TASKSTATS=y
7    CONFIG_TASK_DELAY_ACCT=y
8    CONFIG_TASK_XACCT=y
9    CONFIG_TASK_IO_ACCOUNTING=y
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11To use bootio make sure it's included in product config for the board.
12Create file /data/misc/bootio/start with a command like the following:
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14    adb shell 'echo "$TIMEOUT $SAMPLES" > /data/misc/bootio/start'
15
16Where the value of $TIMEOUT corresponds to the desired bootio period in
17seconds and $SAMPLES corresponds to the desired number of samples.
18
19Note: /data/misc/bootio/start is not deleted automatically, so don't
20forget to delete it when you're done collecting data.
21
22To see collected logs run:
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24    adb shell bootio -p
25