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>Board: NEC V850 Cosmo Evaluation 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-V850-CEBSB1">Board: NEC V850 Cosmo Evaluation Board</H1
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>Board: NEC V850 Cosmo Evaluation Board
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CPU: NEC CEB-V850/SB1 16MHz (in internal Flash)
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Startup, main stack             : stack used   572 size  2936
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Startup              :  Interrupt stack used   132 size  4096
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Startup              : Idlethread stack used   210 size  2048
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eCos Kernel Timings
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Notes: all times are in microseconds (.000001) unless otherwise stated
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Reading the hardware clock takes 8 'ticks' overhead
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... this value will be factored out of all other measurements
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Clock interrupt took  118.15 microseconds (472 raw clock ticks)
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Testing parameters:
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   Clock samples:            32
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   Threads:                   7
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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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  113.68  111.00  116.50    1.63   42%  28% Create thread
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   30.00   30.00   30.00    0.00  100% 100% Yield thread [all suspended]
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   29.57   29.50   29.75    0.10   71%  71% Suspend [suspended] thread
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   27.43   27.25   27.50    0.10   71%  28% Resume thread
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   34.11   34.00   34.25    0.12   57%  57% Set priority
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    1.57    1.50    1.75    0.10   71%  71% Get priority
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   72.96   72.75   73.00    0.06   85%  14% Kill [suspended] thread
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   30.00   30.00   30.00    0.00  100% 100% Yield [no other] thread
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   42.75   42.75   42.75    0.00  100% 100% Resume [suspended low prio] thread
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   27.00   27.00   27.00    0.00  100% 100% Resume [runnable low prio] thread
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   43.64   41.25   44.25    0.68   85%  14% Suspend [runnable] thread
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   30.00   30.00   30.00    0.00  100% 100% Yield [only low prio] thread
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   29.57   29.50   29.75    0.10   71%  71% Suspend [runnable-&#62;not runnable]
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   72.93   72.75   73.00    0.10   71%  28% Kill [runnable] thread
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   44.89   44.75   45.75    0.24   85%  85% Destroy [dead] thread
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  103.00  101.50  103.25    0.43   85%  14% Destroy [runnable] thread
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  175.21  171.50  197.50    6.37   85%  85% Resume [high priority] thread
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   84.11   79.50  197.25    1.77   98%   0% Thread switch
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    1.00    1.00    1.00    0.00  100% 100% Scheduler lock
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   20.06   20.00   20.25    0.09   75%  75% Scheduler unlock [0 threads]
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   20.00   20.00   20.00    0.00  100% 100% Scheduler unlock [1 suspended]
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   20.06   20.00   20.25    0.09   75%  75% Scheduler unlock [many suspended]
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   20.06   20.00   20.25    0.09   75%  75% Scheduler unlock [many low prio]
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    4.00    4.00    4.00    0.00  100% 100% Init mutex
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   33.00   33.00   33.00    0.00  100% 100% Lock [unlocked] mutex
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   36.77   36.75   37.25    0.03   96%  96% Unlock [locked] mutex
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   28.13   28.00   28.25    0.13  100%  50% Trylock [unlocked] mutex
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   25.13   25.00   25.25    0.13  100%  50% Trylock [locked] mutex
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    4.88    4.75    5.00    0.13  100%  50% Destroy mutex
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  187.00  187.00  187.00    0.00  100% 100% Unlock/Lock mutex
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   10.00   10.00   10.00    0.00  100% 100% Create mbox
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    0.69    0.50    0.75    0.09   75%  25% Peek [empty] mbox
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   34.75   34.75   34.75    0.00  100% 100% Put [first] mbox
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    0.69    0.50    0.75    0.09   75%  25% Peek [1 msg] mbox
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   35.00   35.00   35.00    0.00  100% 100% Put [second] mbox
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    0.69    0.50    0.75    0.09   75%  25% Peek [2 msgs] mbox
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   36.00   36.00   36.00    0.00  100% 100% Get [first] mbox
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   36.00   36.00   36.00    0.00  100% 100% Get [second] mbox
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   31.00   31.00   31.00    0.00  100% 100% Tryput [first] mbox
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   29.50   29.50   29.50    0.00  100% 100% Peek item [non-empty] mbox
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   35.25   35.25   35.25    0.00  100% 100% Tryget [non-empty] mbox
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   27.69   27.50   27.75    0.09   75%  25% Peek item [empty] mbox
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   31.06   31.00   31.25    0.09   75%  75% Tryget [empty] mbox
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    0.94    0.75    1.00    0.09   75%  25% Waiting to get mbox
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    0.94    0.75    1.00    0.09   75%  25% Waiting to put mbox
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   37.81   37.75   38.00    0.09   75%  75% Delete mbox
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  112.00  112.00  112.00    0.00  100% 100% Put/Get mbox
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    3.19    3.00    3.25    0.09   75%  25% Init semaphore
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   25.38   25.25   25.50    0.13  100%  50% Post [0] semaphore
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   32.63   32.50   32.75    0.13  100%  50% Wait [1] semaphore
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   24.25   24.25   24.25    0.00  100% 100% Trywait [0] semaphore
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   25.00   25.00   25.00    0.00  100% 100% Trywait [1] semaphore
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    4.00    4.00    4.00    0.00  100% 100% Peek semaphore
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    4.88    4.75    5.00    0.13  100%  50% Destroy semaphore
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  124.50  124.50  124.50    0.00  100% 100% Post/Wait semaphore
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    6.50    6.50    6.50    0.00  100% 100% Create counter
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    1.25    1.25    1.25    0.00  100% 100% Get counter value
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    1.44    1.25    1.50    0.09   75%  25% Set counter value
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   36.25   36.25   36.25    0.00  100% 100% Tick counter
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    5.25    5.25    5.25    0.00  100% 100% Delete counter
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   12.25   12.25   12.25    0.00  100% 100% Create alarm
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   49.13   49.00   49.25    0.13  100%  50% Initialize alarm
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    2.81    2.75    3.00    0.09   75%  75% Disable alarm
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   48.50   48.50   48.50    0.00  100% 100% Enable alarm
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    8.25    8.25    8.25    0.00  100% 100% Delete alarm
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   46.50   46.50   46.50    0.00  100% 100% Tick counter [1 alarm]
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  485.42  482.25  580.00    5.91   96%  96% Tick counter [many alarms]
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   64.00   64.00   64.00    0.00  100% 100% Tick &#38; fire counter [1 alarm]
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 1109.76 1100.50 1198.00   16.53   90%  90% Tick &#38; fire counters [&#62;1 together]
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  505.85  502.00  621.00    7.20   96%  96% Tick &#38; fire counters [&#62;1 separately]
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   96.26   95.75  161.25    1.02   99%  99% Alarm latency [0 threads]
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  159.20   95.75  160.75    2.52   97%   0% Alarm latency [2 threads]
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  159.73  110.50  161.75    1.53   97%   0% Alarm latency [many threads]
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  218.45  211.25  445.75    3.55   97%   1% Alarm -&#62; thread resume latency
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   28.24   25.25   43.25    0.00            Clock/interrupt latency
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   60.15   40.50  221.50    0.00            Clock DSR latency
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  472     424     572  (main stack:  1052)  Thread stack used (1912 total)
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All done, main stack            : stack used  1052 size  2936
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All done             :  Interrupt stack used   280 size  4096
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All done             : Idlethread stack used   516 size  2048
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Timing complete - 30590 ms total
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PASS:&lt;Basic timing OK&#62;
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EXIT:&lt;done&#62;&#13;</PRE
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