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>Board: Toshiba REF 4955</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-TX49-REF4955">Board: Toshiba REF 4955</H1
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CLASS="LITERALLAYOUT"
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>&#13;Board: Toshiba REF 4955
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CPU  : Toshiba TX4955 66MHz
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Startup, main stack             : stack used   960 size  2936
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Startup              :  Interrupt stack used   168 size  4096
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Startup              : Idlethread stack used   372 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 3 `ticks' overhead
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... this value will be factored out of all other measurements
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Clock interrupt took    4.00 microseconds (264 raw clock ticks)
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Testing parameters:
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   Clock samples:            32
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   Threads:                  64
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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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   11.21    9.58   14.11    0.95   48%  34% Create thread
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    0.66    0.65    1.29    0.02   98%  98% Yield thread [all suspended]
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    0.63    0.53    3.06    0.17   82%  82% Suspend [suspended] thread
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    0.54    0.53    1.06    0.02   98%  98% Resume thread
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    0.78    0.74    1.39    0.05   93%  93% Set priority
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    0.05    0.05    0.36    0.01   98%  98% Get priority
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    2.06    1.89    6.65    0.25   95%  79% Kill [suspended] thread
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    0.65    0.65    0.68    0.00   98%  98% Yield [no other] thread
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    1.15    1.02    3.03    0.20   81%  81% Resume [suspended low prio] thread
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    0.54    0.52    1.18    0.03   96%  96% Resume [runnable low prio] thread
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    0.94    0.88    1.27    0.01   95%   1% Suspend [runnable] thread
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    0.65    0.65    0.68    0.00   98%  98% Yield [only low prio] thread
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    0.54    0.53    0.86    0.01   98%  96% Suspend [runnable-&#62;not runnable]
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    1.97    1.89    2.98    0.12   84%  84% Kill [runnable] thread
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    1.03    0.92    4.94    0.17   89%  89% Destroy [dead] thread
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    2.55    2.33    4.38    0.24   89%  70% Destroy [runnable] thread
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    5.62    4.11   13.23    0.99   65%  40% Resume [high priority] thread
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    1.84    1.83    2.79    0.02   98%  98% Thread switch
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    0.12    0.02    0.65    0.15   74%  74% Scheduler lock
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    0.35    0.35    0.35    0.00  100% 100% Scheduler unlock [0 threads]
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    0.35    0.35    0.35    0.00  100% 100% Scheduler unlock [1 suspended]
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    0.43    0.35    1.17    0.13   78%  78% Scheduler unlock [many suspended]
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    0.45    0.35    1.17    0.15   75%  75% Scheduler unlock [many low prio]
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    0.46    0.15    3.38    0.30   62%  50% Init mutex
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    0.73    0.64    3.27    0.16   96%  96% Lock [unlocked] mutex
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    0.77    0.65    4.50    0.23   96%  96% Unlock [locked] mutex
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    0.58    0.55    1.42    0.05   96%  96% Trylock [unlocked] mutex
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    0.51    0.50    0.83    0.02   96%  96% Trylock [locked] mutex
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    0.12    0.11    0.41    0.02   96%  96% Destroy mutex
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    4.72    4.70    5.58    0.05   96%  96% Unlock/Lock mutex
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    1.01    0.67    3.48    0.40   71%  71% Create mbox
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    0.02    0.00    0.53    0.03   96%  96% Peek [empty] mbox
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    0.89    0.68    4.20    0.29   96%  71% Put [first] mbox
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    0.02    0.00    0.33    0.02   96%  96% Peek [1 msg] mbox
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    0.69    0.68    0.76    0.01   50%  46% Put [second] mbox
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    0.02    0.00    0.30    0.02   96%  96% Peek [2 msgs] mbox
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    0.81    0.71    3.83    0.19   96%  96% Get [first] mbox
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    0.72    0.71    1.02    0.02   96%  96% Get [second] mbox
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    0.81    0.65    2.74    0.22   96%  71% Tryput [first] mbox
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    0.67    0.62    2.27    0.10   96%  96% Peek item [non-empty] mbox
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    0.77    0.71    2.41    0.10   96%  96% Tryget [non-empty] mbox
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    0.59    0.58    0.88    0.02   96%  96% Peek item [empty] mbox
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    0.62    0.62    0.67    0.00   96%  96% Tryget [empty] mbox
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    0.03    0.02    0.32    0.02   96%  96% Waiting to get mbox
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    0.02    0.02    0.06    0.01   50%  46% Waiting to put mbox
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    0.75    0.65    3.59    0.18   96%  96% Delete mbox
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    2.80    2.77    3.59    0.05   96%  96% Put/Get mbox
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    0.37    0.18    0.88    0.28   71%  71% Init semaphore
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    0.48    0.47    0.80    0.02   96%  96% Post [0] semaphore
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    0.60    0.59    0.67    0.01   50%  46% Wait [1] semaphore
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    0.53    0.50    1.41    0.06   96%  96% Trywait [0] semaphore
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    0.51    0.50    0.71    0.01   96%  50% Trywait [1] semaphore
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    0.09    0.09    0.15    0.00   96%  96% Peek semaphore
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    0.12    0.11    0.41    0.02   96%  96% Destroy semaphore
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    3.05    3.05    3.05    0.00  100% 100% Post/Wait semaphore
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    0.57    0.17    2.76    0.24   59%  25% Create counter
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    0.06    0.05    0.58    0.03   96%  96% Get counter value
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    0.06    0.03    0.64    0.04   96%  96% Set counter value
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    0.73    0.71    1.02    0.02   96%  96% Tick counter
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    0.12    0.11    0.15    0.01   50%  46% Delete counter
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    0.89    0.64    3.15    0.34   84%  71% Create alarm
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    1.00    0.95    2.41    0.09   96%  96% Initialize alarm
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    0.09    0.06    0.68    0.04   96%  96% Disable alarm
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    1.05    1.00    2.48    0.09   96%  96% Enable alarm
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    0.18    0.17    0.50    0.02   96%  96% Delete alarm
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    0.90    0.89    1.11    0.01   96%  96% Tick counter [1 alarm]
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    5.60    5.59    5.88    0.02   96%  96% Tick counter [many alarms]
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    1.53    1.52    2.11    0.04   96%  96% Tick &#38; fire counter [1 alarm]
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   25.48   25.47   25.76    0.02   96%  96% Tick &#38; fire counters [&#62;1 together]
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    6.22    6.21    6.44    0.01   96%  96% Tick &#38; fire counters [&#62;1 separately]
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    2.59    2.56    6.17    0.07   98%  98% Alarm latency [0 threads]
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    4.06    3.95    6.24    0.08   78%  57% Alarm latency [2 threads]
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    5.03    2.56    9.03    0.89   59%  10% Alarm latency [many threads]
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    5.68    5.59   15.45    0.15   99%  99% Alarm -&#62; thread resume latency
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    2.52    1.41    8.12    0.00            Clock/interrupt latency
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    2.05    1.17    6.00    0.00            Clock DSR latency
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   34       0    1072  (main stack:  1320)  Thread stack used (1912 total)
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All done, main stack            : stack used  1320 size  2936
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All done             :  Interrupt stack used   136 size  4096
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All done             : Idlethread stack used   996 size  2048
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Timing complete - 30360 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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