kernel/git/stable/linux.git/Documentation/iostats.txt, branch master

docs: admin-guide: add a series of orphaned documents

2019-07-15T14:03:02+00:00

There are lots of documents that belong to the admin-guide but are on random places (most under Documentation root dir). Move them to the admin guide. Signed-off-by: Mauro Carvalho Chehab Acked-by: Alexandre Belloni Acked-by: Bartlomiej Zolnierkiewicz

block: document iostat changes for disk busy time accounting

2019-06-14T20:46:43+00:00

Since commit 5b18b5a73760 ("block: delete part_round_stats and switch to less precise counting") io_ticks is approximated by adding one at each start and end of requests if jiffies has changed. This works perfectly for requests shorter than a jiffy. If requests runs more than 2 jiffies some I/O time will not be accounted unless there are other reuqests. Signed-off-by: Konstantin Khlebnikov Signed-off-by: Jonathan Corbet

block: Track DISCARD statistics and output them in stat and diskstat

2018-07-18T14:44:22+00:00

Add tracking of REQ_OP_DISCARD ios to the partition statistics and append them to the various stat files in /sys as well as /proc/diskstats. These are tracked with the same four stats as reads and writes: Number of discard ios completed. Number of discard ios merged Number of discard sectors completed Milliseconds spent on discard requests This is done via adding a new STAT_DISCARD define to genhd.h and then using it to index that stat field for discard requests. tj: Refreshed on top of v4.17 and other previous updates. Signed-off-by: Michael Callahan Signed-off-by: Tejun Heo Cc: Andy Newell Signed-off-by: Jens Axboe

iostats.txt: update it to cover recent Kernels

2017-07-14T19:51:40+00:00

Everything there that it is said for 2.6 also applies on current 4.x Kernels. So, update the information there. While here, use ``foo`` for literals. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Jonathan Corbet

iostats.txt: standardize document format

2017-07-14T19:51:39+00:00

Each text file under Documentation follows a different format. Some doesn't even have titles! Change its representation to follow the adopted standard, using ReST markups for it to be parseable by Sphinx: - promote main title level; - mark literal blocks as such; - Add blank lines to avoid Sphinx errors. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Jonathan Corbet

iostats.txt: add easy-to-find description for field 6

2013-04-29T13:18:50+00:00

iostats.txt has a merged description of fields 2 and 6, but it's not obvious. This patch adds a field 6, pointing to the merged description of field 6 in field 2. Signed-off-by: David Hilton Signed-off-by: Jiri Kosina

Documentation/iostats.txt: bit-size reference etc.

2011-03-23T19:44:18+00:00

- correction that disk stats values are native-word-sized 32-bit or 64-bit values, not always 32-bi values - drop "Last modified" entry; use git for that - fix a few typos - change "cpu" to "CPU" Reported-by: Linda Walsh Signed-off-by: Randy Dunlap Signed-off-by: Jens Axboe

remove extraneous 'is' from Documentation/iostats.txt

2011-01-03T13:00:28+00:00

fix "is increases", drop "is" Signed-off-by: Jim Cromie Signed-off-by: Jiri Kosina

Documentation cleanup: trivial misspelling, punctuation, and grammar corrections.

2008-07-26T19:00:06+00:00

Cc: Randy Dunlap Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Enhanced partition statistics: documentation update

2008-02-08T11:42:11+00:00

Update the documentation to reflect the change in userspace interface. Signed-off-by: Jerome Marchand Signed-off-by: Jens Axboe