improve I/O analysys script further
- add IO wait histogram for check_io_trace_all
- Check block level acces for check_file_read. Even if it is a single
block read in ext4 level, block level can be more efficient
or inefficient depending on I/O scheduler. Total read is coming from
block layer while ext4 layer can have more access when another read request
is made while similar read is still pending.
- add separate accounting for write
bug: 64810855
Test: run scripts and check results
Change-Id: I302d6e8661eec689bc2adb5ab608319b48acefd1
2 files changed