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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
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>Board: Intel SA1110 (Assabet)</TITLE
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>eCos User Guide</TH
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>Prev</A
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><TD
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>Appendix B. Real-time characterization</TD
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><H1
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><A
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NAME="RT-ARM-ASSABET">Board: Intel SA1110 (Assabet)</H1
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><PRE
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CLASS="LITERALLAYOUT"
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>Board: Intel SA1110 (Assabet)
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CPU :  StrongARM 221.2 MHz
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Microseconds for one run through Dhrystone:     3.3
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Dhrystones per Second:                        306748.5
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VAX MIPS rating =    174.586
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Startup, main stack             : stack used   420 size  2400
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Startup              :  Interrupt stack used   136 size  4096
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Startup              : Idlethread stack used    84 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 0 `ticks' overhead
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... this value will be factored out of all other measurements
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Clock interrupt took    3.20 microseconds (11 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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    5.98    4.88   14.38    0.70   57%  35% Create thread
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    0.86    0.81    1.90    0.08   87%  87% Yield thread [all suspended]
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    1.05    0.81    3.53    0.19   46%  39% Suspend [suspended] thread
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    1.07    0.81    3.80    0.18   48%  35% Resume thread
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    1.36    1.09    5.97    0.22   45%  39% Set priority
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    0.73    0.54    1.90    0.19   85%  50% Get priority
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    2.93    2.44   13.56    0.39   79%  70% Kill [suspended] thread
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    0.89    0.81    4.34    0.14   89%  89% Yield [no other] thread
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    1.63    1.36    4.61    0.17   57%  29% Resume [suspended low prio] thread
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    1.03    0.81    3.53    0.19   46%  42% Resume [runnable low prio] thread
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    1.74    1.36    6.51    0.22   87%   6% Suspend [runnable] thread
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    0.93    0.81    4.61    0.18   98%  78% Yield [only low prio] thread
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    1.06    0.81    3.26    0.19   42%  39% Suspend [runnable-&#62;not runnable]
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    2.56    1.90   13.02    0.41   87%  34% Kill [runnable] thread
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    2.02    1.63    7.05    0.22   92%   3% Destroy [dead] thread
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    3.09    2.44   15.19    0.51   78%  46% Destroy [runnable] thread
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    6.77    5.43   13.02    0.59   75%  17% Resume [high priority] thread
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    1.81    1.63    7.87    0.18   49%  49% Thread switch
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    0.25    0.00    1.36    0.05   89%  10% Scheduler lock
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    0.51    0.27    1.36    0.06   85%  13% Scheduler unlock [0 threads]
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    0.51    0.27    1.09    0.06   85%  13% Scheduler unlock [1 suspended]
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    0.51    0.27    1.09    0.07   85%  14% Scheduler unlock [many suspended]
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    0.51    0.27    1.09    0.06   85%  13% Scheduler unlock [many low prio]
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    0.52    0.27    2.17    0.15   62%  31% Init mutex
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    0.97    0.54    4.34    0.28   84%  65% Lock [unlocked] mutex
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    1.05    0.81    5.15    0.28   96%  96% Unlock [locked] mutex
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    0.86    0.54    3.26    0.24   65%  31% Trylock [unlocked] mutex
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    0.79    0.54    3.53    0.23   43%  46% Trylock [locked] mutex
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    0.33    0.27    1.63    0.11   90%  90% Destroy mutex
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    4.16    3.80    8.95    0.30   75%  96% Unlock/Lock mutex
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    0.70    0.54    2.98    0.21   96%  65% Create mbox
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    0.59    0.27    1.63    0.14   75%   9% Peek [empty] mbox
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    1.33    1.09    5.70    0.31   96%  93% Put [first] mbox
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    0.61    0.27    1.63    0.13   81%   3% Peek [1 msg] mbox
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    1.35    1.09    5.43    0.31   96%  87% Put [second] mbox
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    0.58    0.27    1.36    0.11   78%   6% Peek [2 msgs] mbox
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    1.38    1.09    4.88    0.25   59%  37% Get [first] mbox
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    1.40    1.09    5.15    0.26   62%  34% Get [second] mbox
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    1.27    0.81    4.88    0.28   90%  65% Tryput [first] mbox
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    1.34    0.81    4.61    0.22   59%   6% Peek item [non-empty] mbox
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    1.47    1.09    5.15    0.27   84%  12% Tryget [non-empty] mbox
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    1.12    0.81    4.34    0.23   59%  31% Peek item [empty] mbox
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    1.14    0.81    4.07    0.24   71%  25% Tryget [empty] mbox
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    0.59    0.27    1.36    0.12   78%   6% Waiting to get mbox
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    0.59    0.27    1.36    0.12   78%   6% Waiting to put mbox
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    1.28    0.81    5.43    0.32   87%  78% Delete mbox
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    2.64    2.17   10.31    0.48   96%  96% Put/Get mbox
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    0.47    0.27    2.17    0.19   46%  46% Init semaphore
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    0.77    0.54    3.80    0.26   90%  56% Post [0] semaphore
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    0.90    0.54    4.07    0.26   75%  21% Wait [1] semaphore
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    0.85    0.54    3.26    0.21   56%  28% Trywait [0] semaphore
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    0.69    0.54    2.17    0.18   96%  62% Trywait [1] semaphore
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    0.44    0.27    2.17    0.19   96%  56% Peek semaphore
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    0.38    0.27    1.90    0.17   96%  75% Destroy semaphore
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    2.74    2.44    9.49    0.42   96%  96% Post/Wait semaphore
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    0.43    0.27    1.90    0.18   96%  56% Create counter
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    0.49    0.00    2.17    0.18   56%   3% Get counter value
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    0.33    0.00    1.63    0.13   78%   6% Set counter value
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    1.03    0.81    2.44    0.22   84%  50% Tick counter
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    0.42    0.27    1.90    0.20   90%  65% Delete counter
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    0.70    0.54    2.44    0.20   93%  62% Create alarm
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    1.65    1.36    6.78    0.40   96%  81% Initialize alarm
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    0.75    0.54    1.63    0.18   43%  43% Disable alarm
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    1.75    1.36    7.05    0.38   65%  81% Enable alarm
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    0.81    0.54    2.44    0.15   62%  28% Delete alarm
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    1.01    0.81    2.17    0.16   56%  40% Tick counter [1 alarm]
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    4.19    4.07    5.43    0.16   96%  68% Tick counter [many alarms]
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    1.48    1.36    3.80    0.20   96%  78% Tick &#38; fire counter [1 alarm]
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   20.23   20.07   22.52    0.21   96%  65% Tick &#38; fire counters [&#62;1 together]
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    4.70    4.61    6.78    0.16   87%  87% Tick &#38; fire counters [&#62;1 separately]
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    2.81    2.71   14.38    0.20   98%  98% Alarm latency [0 threads]
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    3.19    2.71   13.56    0.38   73%  59% Alarm latency [2 threads]
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    9.71    7.87   18.17    1.25   59%  53% Alarm latency [many threads]
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    5.77    5.43   45.57    0.68   97%  97% Alarm -&#62; thread resume latency
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    2.38    0.81    9.49    0.00            Clock/interrupt latency
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    2.02    1.09    7.32    0.00            Clock DSR latency
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   11       0     316  (main stack:   764)  Thread stack used (1120 total)
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All done, main stack            : stack used   764 size  2400
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All done             :  Interrupt stack used   287 size  4096
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All done             : Idlethread stack used   272 size  2048
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Timing complete - 30220 ms total
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        </PRE
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>Prev</A
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>Board: NEC VR4373</TD
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>Up</A
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>Board: Intel SA1100 (Brutus)</TD
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