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authorJerome Marchand <jmarchan@redhat.com>2008-02-08 11:10:56 +0100
committerJens Axboe <jens.axboe@oracle.com>2008-02-08 12:42:11 +0100
commit0e53c2be0495afa97c6b0d06397adcbff9c65347 (patch)
treea79db95579e3f532dd59c00a7401eab27c8a0d3f /Documentation/ABI/testing/procfs-diskstats
parentc3c930d93365c495fbc1df28649da7cd4b97f4af (diff)
Enhanced partition statistics: documentation update
Update the documentation to reflect the change in userspace interface. Signed-off-by: Jerome Marchand <jmarchan@redhat.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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+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 succesfully
+ 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)
+ For more details refer to Documentation/iostats.txt