Changeset e4e66d4 in rtems for doc


Ignore:
Timestamp:
Dec 12, 2014, 2:04:05 PM (5 years ago)
Author:
Sebastian Huber <sebastian.huber@…>
Branches:
4.11, master
Children:
3cd3a260
Parents:
22cce675
git-author:
Sebastian Huber <sebastian.huber@…> (12/12/14 14:04:05)
git-committer:
Sebastian Huber <sebastian.huber@…> (12/12/14 14:47:56)
Message:

doc: Clarify rate-monotonic statistics

File:
1 edited

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  • doc/user/rtmon.t

    r22cce675 re4e66d4  
    5353@subsection Period Statistics
    5454
    55 This manager maintains a set of statistics on each period.  These
    56 statistics are reset implictly at period creation time and may be
    57 reset or obtained at any time by the application.  The following
    58 is a list of the information kept:
     55This manager maintains a set of statistics on each period object.  These
     56statistics are reset implictly at period creation time and may be reset or
     57obtained at any time by the application.  The following is a list of the
     58information kept:
    5959
    6060@itemize @bullet
     
    9393
    9494@end itemize
     95
     96Each period is divided into two consecutive phases.  The period starts with the
     97active phase of the task and is followed by the inactive phase of the task.  In
     98the inactive phase the task is blocked and waits for the start of the next
     99period.  The inactive phase is skipped in case of a period miss.  The wall time
     100includes the time during the active phase of the task on which the task is not
     101executing on a processor.  The task is either blocked (for example it waits for
     102a resource) or a higher priority tasks executes, thus preventing it from
     103executing.  In case the wall time exceeds the period time, then this is a
     104period miss.  The gap between the wall time and the period time is the margin
     105between a period miss or success.
    95106
    96107The period statistics information is inexpensive to maintain
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