5c7dd7acc3
repo: https://github.com/T-head-Semi/linux commit: b1313fe517ca3703119dcc99ef3bbf75ab42bcfb Change-Id: I6cbb35294024ea3a66140e311f4bb705fd7fd626
44 lines
1.2 KiB
Plaintext
44 lines
1.2 KiB
Plaintext
What: /proc/diskstats
|
|
Date: February 2008
|
|
Contact: Jerome Marchand <jmarchan@redhat.com>
|
|
Description:
|
|
The /proc/diskstats file displays the I/O statistics
|
|
of block devices. Each line contains the following 14
|
|
fields:
|
|
|
|
== ===================================
|
|
1 major number
|
|
2 minor mumber
|
|
3 device name
|
|
4 reads completed successfully
|
|
5 reads merged
|
|
6 sectors read
|
|
7 time spent reading (ms)
|
|
8 writes completed
|
|
9 writes merged
|
|
10 sectors written
|
|
11 time spent writing (ms)
|
|
12 I/Os currently in progress
|
|
13 time spent doing I/Os (ms)
|
|
14 weighted time spent doing I/Os (ms)
|
|
== ===================================
|
|
|
|
Kernel 4.18+ appends four more fields for discard
|
|
tracking putting the total at 18:
|
|
|
|
== ===================================
|
|
15 discards completed successfully
|
|
16 discards merged
|
|
17 sectors discarded
|
|
18 time spent discarding
|
|
== ===================================
|
|
|
|
Kernel 5.5+ appends two more fields for flush requests:
|
|
|
|
== =====================================
|
|
19 flush requests completed successfully
|
|
20 time spent flushing
|
|
== =====================================
|
|
|
|
For more details refer to Documentation/admin-guide/iostats.rst
|