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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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>Board: NEC V850 Cosmo Evaluation Board</TITLE
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>eCos User Guide</TH
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>Prev</A
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>Appendix B. Real-time characterization</TD
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NAME="RT-V850-CEBSA1">Board: NEC V850 Cosmo Evaluation Board</H1
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CLASS="LITERALLAYOUT"
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>Board: NEC V850 Cosmo Evaluation Board
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CPU: NEC CEB-V850/SA1 17MHz
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Startup, main stack  : stack used   552 size  2936
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Startup              : Interrupt stack used   120 size  4096
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Startup              : Idlethread stack used   206 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 27 `ticks' overhead
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... this value will be factored out of all other measurements
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Clock interrupt took  280.04 microseconds (1190 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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  288.71  280.24  297.18    4.84   42%  28% Create thread
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   70.76   70.59   70.82    0.10   71%  28% Yield thread [all suspended]
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   59.06   59.06   59.06    0.00  100% 100% Suspend [suspended] thread
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   60.00   60.00   60.00    0.00  100% 100% Resume thread
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   77.38   77.18   77.41    0.06   85%  14% Set priority
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    3.13    3.06    3.29    0.10   71%  71% Get priority
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  187.46  187.29  187.53    0.10   71%  28% Kill [suspended] thread
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   70.76   70.59   70.82    0.10   71%  28% Yield [no other] thread
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  104.40  103.29  104.71    0.32   85%  14% Resume [suspended low prio] thread
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   59.06   59.06   59.06    0.00  100% 100% Resume [runnable low prio] thread
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   97.11   91.06   98.12    1.73   85%  14% Suspend [runnable] thread
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   70.76   70.59   70.82    0.10   71%  28% Yield [only low prio] thread
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   59.06   59.06   59.06    0.00  100% 100% Suspend [runnable-&#62;not runnable]
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  187.46  187.29  187.53    0.10   71%  28% Kill [runnable] thread
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   95.63   95.29   97.18    0.44   85%  85% Destroy [dead] thread
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  241.28  236.94  242.12    1.24   85%  14% Destroy [runnable] thread
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  378.55  370.35  427.06   13.86   85%  85% Resume [high priority] thread
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  198.77  183.76  452.94   18.77   96%  96% Thread switch
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    2.59    2.59    2.59    0.00  100% 100% Scheduler lock
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   41.29   41.18   41.41    0.12  100%  50% Scheduler unlock [0 threads]
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   40.82   40.71   40.94    0.12  100%  50% Scheduler unlock [1 suspended]
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   41.29   41.18   41.41    0.12  100%  50% Scheduler unlock [many suspended]
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   41.29   41.18   41.41    0.12  100%  50% Scheduler unlock [many low prio]
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   17.94   17.88   18.12    0.09   75%  75% Init mutex
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   68.71   68.71   68.71    0.00  100% 100% Lock [unlocked] mutex
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   72.10   72.00   73.41    0.15   96%  71% Unlock [locked] mutex
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   57.88   57.88   57.88    0.00  100% 100% Trylock [unlocked] mutex
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   52.24   52.24   52.24    0.00  100% 100% Trylock [locked] mutex
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   12.41   12.24   12.47    0.09   75%  25% Destroy mutex
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  427.06  427.06  427.06    0.00  100% 100% Unlock/Lock mutex
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   34.94   34.82   35.06    0.12  100%  50% Create mbox
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    0.76    0.71    0.94    0.09   75%  75% Peek [empty] mbox
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   75.29   75.29   75.29    0.00  100% 100% Put [first] mbox
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    1.24    1.18    1.41    0.09   75%  75% Peek [1 msg] mbox
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   75.76   75.76   75.76    0.00  100% 100% Put [second] mbox
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    0.76    0.71    0.94    0.09   75%  75% Peek [2 msgs] mbox
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   80.12   80.00   80.24    0.12  100%  50% Get [first] mbox
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   79.65   79.53   79.76    0.12  100%  50% Get [second] mbox
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   70.12   70.12   70.12    0.00  100% 100% Tryput [first] mbox
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   65.76   65.65   65.88    0.12  100%  50% Peek item [non-empty] mbox
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   78.00   77.88   78.12    0.12  100%  50% Tryget [non-empty] mbox
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   63.12   63.06   63.29    0.09   75%  75% Peek item [empty] mbox
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   67.82   67.76   68.00    0.09   75%  75% Tryget [empty] mbox
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    1.94    1.88    2.12    0.09   75%  75% Waiting to get mbox
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    1.47    1.41    1.65    0.09   75%  75% Waiting to put mbox
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   75.59   75.53   75.76    0.09   75%  75% Delete mbox
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  252.76  252.71  252.94    0.09   75%  75% Put/Get mbox
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   20.24   20.24   20.24    0.00  100% 100% Init semaphore
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   54.35   54.35   54.35    0.00  100% 100% Post [0] semaphore
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   66.59   66.59   66.59    0.00  100% 100% Wait [1] semaphore
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   52.24   52.24   52.24    0.00  100% 100% Trywait [0] semaphore
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   53.41   53.41   53.41    0.00  100% 100% Trywait [1] semaphore
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   10.65   10.59   10.82    0.09   75%  75% Peek semaphore
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   12.65   12.47   12.71    0.09   75%  25% Destroy semaphore
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  276.94  276.94  276.94    0.00  100% 100% Post/Wait semaphore
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   14.94   14.82   15.06    0.12  100%  50% Create counter
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    2.18    2.12    2.35    0.09   75%  75% Get counter value
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    3.06    3.06    3.06    0.00  100% 100% Set counter value
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   78.12   78.12   78.12    0.00  100% 100% Tick counter
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   13.82   13.65   13.88    0.09   75%  25% Delete counter
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   26.94   26.82   27.06    0.12  100%  50% Create alarm
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  104.18  104.00  104.24    0.09   75%  25% Initialize alarm
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    7.65    7.53    7.76    0.12  100%  50% Disable alarm
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  104.94  104.94  104.94    0.00  100% 100% Enable alarm
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   19.47   19.29   19.53    0.09   75%  25% Delete alarm
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   88.53   88.47   88.71    0.09   75%  75% Tick counter [1 alarm]
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  418.61  411.29  645.41   14.17   96%  96% Tick counter [many alarms]
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  139.59  139.53  139.76    0.09   75%  75% Tick &#38; fire counter [1 alarm]
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 2150.21 2096.71 2367.53   83.59   78%  78% Tick &#38; fire counters [&#62;1 together]
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  478.15  462.35  733.41   29.61   93%  93% Tick &#38; fire counters [&#62;1 separately]
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  219.89  218.59  369.88    2.34   99%  99% Alarm latency [0 threads]
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  292.11  218.59  371.53   37.85   50%  25% Alarm latency [2 threads]
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  292.96  218.59  370.59   38.12   49%  25% Alarm latency [many threads]
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  540.90  495.76 1677.41   17.76   98%   0% Alarm -&#62; thread resume latency
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   79.01   78.59  104.71    0.00            Clock/interrupt latency
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  123.41   85.88 1982.82    0.00            Clock DSR latency
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  522     516     536  (main stack:  1124)  Thread stack used (1912 total)
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All done, main stack : stack used  1124 size  2936
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All done             :  Interrupt stack used   288 size  4096
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All done             : Idlethread stack used   488 size  2048
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Timing complete - 32540 ms total&#13;</PRE
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>Board: NEC V850 Cosmo Evaluation Board</TD
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