.. | .. |
---|
6 | 6 | of block devices. Each line contains the following 14 |
---|
7 | 7 | fields: |
---|
8 | 8 | |
---|
9 | | - 1 - major number |
---|
10 | | - 2 - minor mumber |
---|
11 | | - 3 - device name |
---|
12 | | - 4 - reads completed successfully |
---|
13 | | - 5 - reads merged |
---|
14 | | - 6 - sectors read |
---|
15 | | - 7 - time spent reading (ms) |
---|
16 | | - 8 - writes completed |
---|
17 | | - 9 - writes merged |
---|
18 | | - 10 - sectors written |
---|
19 | | - 11 - time spent writing (ms) |
---|
20 | | - 12 - I/Os currently in progress |
---|
21 | | - 13 - time spent doing I/Os (ms) |
---|
22 | | - 14 - weighted time spent doing I/Os (ms) |
---|
| 9 | + == =================================== |
---|
| 10 | + 1 major number |
---|
| 11 | + 2 minor mumber |
---|
| 12 | + 3 device name |
---|
| 13 | + 4 reads completed successfully |
---|
| 14 | + 5 reads merged |
---|
| 15 | + 6 sectors read |
---|
| 16 | + 7 time spent reading (ms) |
---|
| 17 | + 8 writes completed |
---|
| 18 | + 9 writes merged |
---|
| 19 | + 10 sectors written |
---|
| 20 | + 11 time spent writing (ms) |
---|
| 21 | + 12 I/Os currently in progress |
---|
| 22 | + 13 time spent doing I/Os (ms) |
---|
| 23 | + 14 weighted time spent doing I/Os (ms) |
---|
| 24 | + == =================================== |
---|
23 | 25 | |
---|
24 | 26 | Kernel 4.18+ appends four more fields for discard |
---|
25 | 27 | tracking putting the total at 18: |
---|
26 | 28 | |
---|
27 | | - 15 - discards completed successfully |
---|
28 | | - 16 - discards merged |
---|
29 | | - 17 - sectors discarded |
---|
30 | | - 18 - time spent discarding |
---|
| 29 | + == =================================== |
---|
| 30 | + 15 discards completed successfully |
---|
| 31 | + 16 discards merged |
---|
| 32 | + 17 sectors discarded |
---|
| 33 | + 18 time spent discarding |
---|
| 34 | + == =================================== |
---|
31 | 35 | |
---|
32 | | - For more details refer to Documentation/iostats.txt |
---|
| 36 | + Kernel 5.5+ appends two more fields for flush requests: |
---|
| 37 | + |
---|
| 38 | + == ===================================== |
---|
| 39 | + 19 flush requests completed successfully |
---|
| 40 | + 20 time spent flushing |
---|
| 41 | + == ===================================== |
---|
| 42 | + |
---|
| 43 | + For more details refer to Documentation/admin-guide/iostats.rst |
---|