3 Contact: Jerome Marchand <jmarchan@redhat.com>
5 The /proc/diskstats file displays the I/O statistics
6 of block devices. Each line contains the following 14
12 4 - reads completed successfully
15 7 - time spent reading (ms)
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)
24 Kernel 4.18+ appends four more fields for discard
25 tracking putting the total at 18:
27 15 - discards completed successfully
29 17 - sectors discarded
30 18 - time spent discarding
32 For more details refer to Documentation/iostats.txt