4bd9ea539129036264b80dd926f156167bd51d6e
[linux-3.10.git] / Documentation / ABI / testing / sysfs-block
1 What:           /sys/block/<disk>/stat
2 Date:           February 2008
3 Contact:        Jerome Marchand <jmarchan@redhat.com>
4 Description:
5                 The /sys/block/<disk>/stat files displays the I/O
6                 statistics of disk <disk>. They contain 11 fields:
7                  1 - reads completed succesfully
8                  2 - reads merged
9                  3 - sectors read
10                  4 - time spent reading (ms)
11                  5 - writes completed
12                  6 - writes merged
13                  7 - sectors written
14                  8 - time spent writing (ms)
15                  9 - I/Os currently in progress
16                 10 - time spent doing I/Os (ms)
17                 11 - weighted time spent doing I/Os (ms)
18                 For more details refer Documentation/iostats.txt
19
20
21 What:           /sys/block/<disk>/<part>/stat
22 Date:           February 2008
23 Contact:        Jerome Marchand <jmarchan@redhat.com>
24 Description:
25                 The /sys/block/<disk>/<part>/stat files display the
26                 I/O statistics of partition <part>. The format is the
27                 same as the above-written /sys/block/<disk>/stat
28                 format.