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| -rw-r--r-- | Documentation/iostats.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/iostats.txt b/Documentation/iostats.txt index 49df45f90e8a..5d63b18bd6d1 100644 --- a/Documentation/iostats.txt +++ b/Documentation/iostats.txt @@ -97,6 +97,10 @@ Field 9 -- # of I/Os currently in progress Field 10 -- # of milliseconds spent doing I/Os This field increases so long as field 9 is nonzero. + Since 5.0 this field counts jiffies when at least one request was + started or completed. If request runs more than 2 jiffies then some + I/O time will not be accounted unless there are other requests. + Field 11 -- weighted # of milliseconds spent doing I/Os This field is incremented at each I/O start, I/O completion, I/O merge, or read of these stats by the number of I/Os in progress |