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>Board: Matsushita STDEVAL1 Board</TITLE
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>eCos User Guide</TH
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>Appendix B. Real-time characterization</TD
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NAME="RT-MN10300-STDEVAL1">Board: Matsushita STDEVAL1 Board</H1
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>&#13;Board: Matsushita STDEVAL1 Board
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CPU  : MN103002A  60MHz
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eCOS Kernel Timings
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Note: all times are in microseconds (.000001) unless otherwise stated
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Reading the hardware clock takes 18 'ticks' overhead
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... this value will be factored out of all other measurements
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Clock interrupt took   13.73 microseconds (205 raw clock ticks)
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Testing parameters:
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   Clock samples:          32
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   Threads:                24
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   Thread switches:       128
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   Mutexes:                32
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   Mailboxes:              32
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   Semaphores:             32
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   Scheduler operations:  128
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   Counters:               32
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   Alarms:                 32
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                                 Confidence
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     Ave     Min     Max     Var  Ave  Min  Function
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  ======  ======  ======  ====== ========== ========
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   14.36   11.53   23.53    1.81   54%  33% Create thread
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    2.64    2.53    5.07    0.20   95%  95% Yield thread [all suspended]
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    2.25    1.93    4.80    0.31   45%  83% Suspend [suspended] thread
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    2.19    2.00    4.93    0.28   91%  91% Resume thread
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    3.42    3.00    8.40    0.47   95%  87% Set priority
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    0.31    0.13    1.20    0.19   79%  58% Get priority
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    8.26    7.40   18.80    0.93   95%  87% Kill [suspended] thread
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    2.58    2.47    5.13    0.21   95%  95% Yield [no other] thread
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    5.07    4.53    8.67    0.44   62%  50% Resume [suspended low prio] thread
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    2.27    2.07    4.53    0.23   87%  87% Resume [runnable low prio] thread
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    4.76    4.07    9.40    0.65   66%  75% Suspend [runnable] thread
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    2.63    2.53    4.73    0.18   95%  95% Yield [only low prio] thread
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    2.09    1.87    4.27    0.27   91%  79% Suspend [runnable-&#62;not runnable]
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   10.79   10.00   18.20    0.81   95%  79% Kill [runnable] thread
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   20.30   18.40   28.80    1.42   79%  54% Resume [high priority] thread
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    5.53    5.47   12.13    0.11   98%  97% Thread switch
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    0.28    0.27    2.20    0.03   97%  97% Scheduler lock
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    1.14    1.13    2.00    0.01   99%  99% Scheduler unlock [0 threads]
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    1.14    1.13    2.40    0.02   99%  99% Scheduler unlock [1 suspended]
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    1.16    1.13    3.33    0.06   95%  95% Scheduler unlock [many suspended]
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    1.23    1.20    3.13    0.05   95%  95% Scheduler unlock [many low prio]
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    1.29    1.00    4.20    0.25   65%  50% Init mutex
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    2.65    2.47    5.27    0.23   93%  87% Lock [unlocked] mutex
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    3.26    3.07    6.80    0.28   93%  87% Unlock [locked] mutex
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    2.48    2.33    5.07    0.21   90%  87% Trylock [unlocked] mutex
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    2.20    2.07    4.67    0.21   93%  87% Trylock [locked] mutex
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    0.23    0.20    1.00    0.05   96%  93% Destroy mutex
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   25.11   24.73   27.53    0.21   65%  31% Unlock/Lock mutex
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    2.49    2.00    5.73    0.32   81%  37% Create mbox
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    0.11    0.00    1.60    0.15   84%  81% Peek [empty] mbox
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    3.01    2.60    9.47    0.52   96%  78% Put [first] mbox
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    0.10    0.00    1.67    0.15   87%  81% Peek [1 msg] mbox
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    3.09    2.60    8.33    0.50   93%  75% Put [second] mbox
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    0.06    0.00    1.13    0.08   96%  87% Peek [2 msgs] mbox
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    3.10    2.80    7.93    0.40   93%  84% Get [first] mbox
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    3.13    2.80    7.53    0.43   90%  78% Get [second] mbox
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    2.99    2.60    8.53    0.52   93%  75% Tryput [first] mbox
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    2.65    2.33    6.80    0.42   90%  78% Peek item [non-empty] mbox
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    3.05    2.73    7.60    0.42   93%  78% Tryget [non-empty] mbox
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    3.16    2.93    6.27    0.31   84%  84% Peek item [empty] mbox
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    2.48    2.27    5.73    0.30   84%  84% Tryget [empty] mbox
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    0.23    0.13    2.07    0.14   96%  87% Waiting to get mbox
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    0.22    0.13    1.93    0.13   96%  75% Waiting to put mbox
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    3.08    2.80    7.93    0.42   84%  84% Delete mbox
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   16.01   15.53   19.00    0.52   78%  59% Put/Get mbox
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    0.85    0.67    3.27    0.19   96%  50% Init semaphore
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    2.00    1.93    3.87    0.12   96%  90% Post [0] semaphore
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    2.05    2.00    3.47    0.09   96%  96% Wait [1] semaphore
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    1.85    1.80    3.47    0.10   96%  96% Trywait [0] semaphore
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    1.82    1.80    2.53    0.04   96%  96% Trywait [1] semaphore
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    0.36    0.33    1.33    0.06   96%  96% Peek semaphore
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    0.38    0.33    1.87    0.09   96%  96% Destroy semaphore
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   12.38   12.20   16.27    0.30   93%  87% Post/Wait semaphore
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    1.18    0.73    4.07    0.24   78%  18% Create counter
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    0.20    0.13    1.40    0.11   87%  87% Get counter value
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    0.24    0.20    1.40    0.08   93%  93% Set counter value
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    3.17    3.13    4.20    0.07   93%  93% Tick counter
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    0.44    0.40    1.73    0.08   96%  96% Delete counter
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    2.24    1.67    5.13    0.47   68%  65% Create alarm
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    3.86    3.40    9.67    0.51   90%  78% Initialize alarm
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    0.15    0.07    1.60    0.12   96%  68% Disable alarm
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    3.76    3.47    7.67    0.35   93%  75% Enable alarm
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    0.57    0.47    2.73    0.16   96%  84% Delete alarm
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    3.64    3.60    4.73    0.07   96%  96% Tick counter [1 alarm]
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   21.72   21.67   23.27    0.10   96%  96% Tick counter [many alarms]
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    6.13    6.07    8.07    0.12   96%  96% Tick &#38; fire counter [1 alarm]
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  101.40   99.53  132.73    2.75   93%  93% Tick &#38; fire counters [&#62;1 together]
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   24.21   24.13   26.40    0.14   96%  96% Tick &#38; fire counters [&#62;1 separately]
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   11.74   11.60   22.67    0.26   98%  98% Alarm latency [0 threads]
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   14.58   11.73   24.93    1.59   54%  28% Alarm latency [2 threads]
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   18.18   15.20   41.07    1.96   60%  43% Alarm latency [many threads]
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    3.06    2.13   10.33    0.00            Clock/interrupt latency
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Timing complete - 23480 ms total
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PASS:&lt;Basic timing OK&#62;
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EXIT:&lt;done&#62;
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        </PRE
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