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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
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>Board: Hitachi Solution Engine 7751 SH4 (se7751)</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-SH-SE7751">Board: Hitachi Solution Engine 7751 SH4 (se7751)</H1
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CLASS="LITERALLAYOUT"
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>Board: Hitachi Solution Engine 7751 SH4 (se7751)
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CPU: Hitachi SH4/7751 162MHz
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Startup, main stack             : stack used   464 size  4112
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Startup              :  Interrupt stack used    92 size  4096
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Startup              : Idlethread stack used    94 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 1 `ticks' overhead
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... this value will be factored out of all other measurements
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Clock interrupt took    14.27 microseconds (96 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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    8.06    5.63   12.15    1.37   46%  29% Create thread
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    1.15    1.04    5.19    0.15   98%  98% Yield thread [all suspended]
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    1.13    0.89    5.04    0.27   89%  62% Suspend [suspended] thread
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    1.11    0.89    5.19    0.26   89%  71% Resume thread
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    1.45    1.19    3.56    0.23   53%  53% Set priority
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    0.21    0.15    1.19    0.10   90%  79% Get priority
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    4.15    3.56   13.04    0.53   68%  64% Kill [suspended] thread
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    1.12    1.04    3.70    0.12   98%  70% Yield [no other] thread
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    1.75    1.33    8.00    0.38   59%  65% Resume [suspended low prio] thread
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    1.10    0.89    4.59    0.25   87%  73% Resume [runnable low prio] thread
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    1.59    1.33    5.93    0.33   81%  79% Suspend [runnable] thread
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    1.13    1.04    4.30    0.13   98%  71% Yield [only low prio] thread
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    1.09    0.89    3.56    0.21   89%  70% Suspend [runnable-&#62;not runnable]
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    4.96    4.30   11.70    0.44   68%  39% Kill [runnable] thread
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    1.95    1.48    8.00    0.34   75%  57% Destroy [dead] thread
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    4.41    3.85   10.37    0.47   53%  57% Destroy [runnable] thread
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   13.15   11.41   23.85    1.11   73%  39% Resume [high priority] thread
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    3.10    2.96    6.22    0.11   41%  39% Thread switch
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    0.13    0.00    1.33    0.06   74%  21% Scheduler lock
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    0.76    0.74    1.78    0.03   96%  96% Scheduler unlock [0 threads]
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    0.76    0.74    1.78    0.03   96%  96% Scheduler unlock [1 suspended]
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    0.77    0.74    2.67    0.05   95%  95% Scheduler unlock [many suspended]
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    0.76    0.74    2.37    0.04   95%  95% Scheduler unlock [many low prio]
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    0.52    0.15    2.67    0.26   65%  34% Init mutex
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    1.23    1.04    5.63    0.32   93%  93% Lock [unlocked] mutex
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    1.45    1.19    5.33    0.31   90%  87% Unlock [locked] mutex
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    1.13    0.89    4.15    0.28   90%  84% Trylock [unlocked] mutex
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    1.00    0.89    2.96    0.17   87%  87% Trylock [locked] mutex
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    0.37    0.30    1.78    0.13   90%  84% Destroy mutex
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    9.09    8.59   12.59    0.43   71%  71% Unlock/Lock mutex
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    0.93    0.59    4.30    0.40   84%  71% Create mbox
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    0.26    0.00    1.19    0.17   71%  59% Peek [empty] mbox
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    3.03    2.52    6.37    0.47   50%  59% Put [first] mbox
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    0.23    0.00    0.74    0.14   68%  15% Peek [1 msg] mbox
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    2.93    2.52    4.74    0.46   71%  59% Put [second] mbox
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    0.22    0.00    0.59    0.13   68%  15% Peek [2 msgs] mbox
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    2.07    1.63    5.93    0.37   84%  59% Get [first] mbox
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    2.06    1.63    4.74    0.34   78%  59% Get [second] mbox
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    1.48    1.04    5.48    0.37   62%  53% Tryput [first] mbox
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    1.31    1.04    4.89    0.32   96%  75% Peek item [non-empty] mbox
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    1.47    1.04    5.78    0.38   84%  65% Tryget [non-empty] mbox
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    1.15    0.89    3.11    0.18   71%  56% Peek item [empty] mbox
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    1.20    1.04    3.85    0.21   93%  84% Tryget [empty] mbox
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    0.21    0.00    0.74    0.14   68%  18% Waiting to get mbox
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    0.19    0.00    0.44    0.10   43%  15% Waiting to put mbox
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    2.19    1.93    5.78    0.27   93%  71% Delete mbox
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   10.23    9.93   11.56    0.15   53%  37% Put/Get mbox
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    0.37    0.15    1.33    0.26   71%  71% Init semaphore
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    0.98    0.89    2.52    0.13   96%  68% Post [0] semaphore
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    1.08    0.89    3.26    0.15   68%  93% Wait [1] semaphore
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    0.98    0.89    3.41    0.16   93%  93% Trywait [0] semaphore
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    0.73    0.59    1.63    0.07   71%  25% Trywait [1] semaphore
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    0.33    0.30    1.33    0.07   93%  93% Peek semaphore
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    0.34    0.30    1.78    0.09   96%  96% Destroy semaphore
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    9.36    8.74   10.37    0.33   56%  31% Post/Wait semaphore
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    0.54    0.15    3.26    0.23   59%  37% Create counter
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    0.13    0.00    0.59    0.07   68%  25% Get counter value
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    0.14    0.00    0.59    0.07   68%  25% Set counter value
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    3.74    3.56    5.33    0.17   53%  75% Tick counter
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    0.32    0.15    2.07    0.12   71%  21% Delete counter
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    1.59    1.19    3.11    0.29   71%  43% Create alarm
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    1.89    1.48    6.37    0.44   87%  78% Initialize alarm
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    0.20    0.15    0.74    0.09   87%  84% Disable alarm
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    1.62    1.33    5.63    0.41   87%  84% Enable alarm
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    0.40    0.30    1.33    0.13   87%  62% Delete alarm
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   4.03    3.70    5.78    0.27   68%  56% Tick counter [1 alarm]
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   14.18   13.93   15.70    0.27   81%  75% Tick counter [many alarms]
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    4.81    4.59    5.93    0.13   81%  15% Tick &#38; fire counter [1 alarm]
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   30.77   30.52   33.63    0.20   75%  65% Tick &#38; fire counters [&#62;1 together]
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   15.10   14.52   17.04    0.23   71%   3% Tick &#38; fire counters [&#62;1 separately]
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    8.78    8.59   18.22    0.20   97%  89% Alarm latency [0 threads]
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   11.29    9.33   17.48    1.02   56%  22% Alarm latency [2 threads]
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   18.70   15.70   26.37    1.45   54%  22% Alarm latency [many threads]
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   19.40   18.81   57.48    0.65   97%  97% Alarm -&#62; thread resume latency
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    4.18    2.81    8.89    0.00            Clock/interrupt latency
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    3.98    2.52   11.56    0.00            Clock DSR latency
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    6       0     380  (main stack:   728)  Thread stack used (992 total)
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All done, main stack            : stack used   728 size  4112
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All done             :  Interrupt stack used   196 size  4096
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All done             : Idlethread stack used   360 size  2048
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Timing complete - 29790 ms total
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PASS:&lt;Basic timing OK&#62;
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EXIT:&lt;done&#62; </PRE
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>Board: Hitachi HS7729PCI HS7729 SH3</TD
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