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blkio: Add io controller stats like
authorDivyesh Shah <dpshah@google.com>
Thu, 1 Apr 2010 22:01:24 +0000 (15:01 -0700)
committerJens Axboe <jens.axboe@oracle.com>
Fri, 2 Apr 2010 06:44:36 +0000 (08:44 +0200)
- io_service_time
- io_wait_time
- io_serviced
- io_service_bytes

These stats are accumulated per operation type helping us to distinguish between
read and write, and sync and async IO. This patch does not increment any of
these stats.

Signed-off-by: Divyesh Shah<dpshah@google.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

No differences found
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