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<HTML
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><HEAD
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>Board: Toshiba JMR3904 Evaluation Board</TITLE
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TITLE="Real-time characterization"
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>eCos User Guide</TH
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>Prev</A
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WIDTH="80%"
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VALIGN="bottom"
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>Appendix B. Real-time characterization</TD
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><A
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NAME="RT-TX39-JMR3904">Board: Toshiba JMR3904 Evaluation Board</H1
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><TABLE
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BORDER="5"
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WIDTH="70%"
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><TD
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><PRE
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CLASS="LITERALLAYOUT"
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> Board: Toshiba JMR3904 Evaluation Board
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CPU : TMPR3904F 50MHz
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eCOS Kernel Timings
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Note: 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 29.68 microseconds (45 raw clock ticks)
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Testing parameters:
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Clock samples: 32
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Threads: 24
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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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13.62 11.72 27.99 1.51 79% 54% Create thread
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2.77 2.60 3.91 0.26 79% 79% Yield thread [all suspended]
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3.31 2.60 6.51 0.27 83% 12% Suspend [suspended] thread
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2.58 1.95 7.81 0.47 58% 37% Resume thread
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4.94 4.56 11.07 0.60 95% 79% Set priority
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0.71 0.65 1.95 0.10 95% 95% Get priority
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14.97 14.32 25.39 0.87 95% 95% Kill [suspended] thread
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2.25 1.95 9.11 0.57 95% 95% Yield [no other] thread
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7.27 6.51 12.37 0.42 79% 16% Resume [suspended low prio] thread
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2.28 1.95 7.16 0.51 95% 79% Resume [runnable low prio] thread
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4.31 3.26 12.37 0.75 87% 79% Suspend [runnable] thread
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2.17 1.95 7.16 0.42 95% 95% Yield [only low prio] thread
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2.39 1.95 6.51 0.51 95% 58% Suspend [runnable->not runnable]
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13.43 12.37 22.79 0.80 91% 91% Kill [runnable] thread
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22.30 20.83 37.76 1.76 91% 91% Resume [high priority] thread
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4.62 4.56 11.07 0.13 98% 98% Thread switch
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1.51 1.30 2.60 0.29 68% 68% Scheduler lock
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2.36 1.95 3.26 0.31 61% 37% Scheduler unlock [0 threads]
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2.39 1.95 5.21 0.32 62% 36% Scheduler unlock [1 suspended]
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2.38 1.95 4.56 0.32 61% 37% Scheduler unlock [many suspended]
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2.38 1.95 5.21 0.32 61% 37% Scheduler unlock [many low prio]
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0.90 0.65 3.26 0.35 71% 71% Init mutex
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2.48 1.95 8.46 0.50 50% 46% Lock [unlocked] mutex
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2.83 2.60 9.11 0.42 93% 93% Unlock [locked] mutex
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2.30 1.95 6.51 0.45 96% 65% Trylock [unlocked] mutex
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1.99 1.30 5.86 0.24 84% 12% Trylock [locked] mutex
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0.04 0.00 1.30 0.08 96% 96% Destroy mutex
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42.40 42.32 44.92 0.16 96% 96% Unlock/Lock mutex
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1.44 1.30 5.86 0.28 96% 96% Create mbox
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0.51 0.00 1.30 0.25 71% 25% Peek [empty] mbox
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2.93 2.60 9.11 0.51 96% 78% Put [first] mbox
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0.51 0.00 1.30 0.25 71% 25% Peek [1 msg] mbox
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4.19 3.91 5.21 0.34 59% 59% Put [second] mbox
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0.45 0.00 0.65 0.28 68% 31% Peek [2 msgs] mbox
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3.28 2.60 10.42 0.45 65% 31% Get [first] mbox
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3.34 2.60 9.77 0.40 78% 18% Get [second] mbox
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2.69 1.95 9.11 0.40 78% 18% Tryput [first] mbox
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2.75 1.95 7.81 0.32 93% 3% Peek item [non-empty] mbox
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3.15 2.60 9.11 0.48 53% 43% Tryget [non-empty] mbox
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2.22 1.95 6.51 0.41 96% 78% Peek item [empty] mbox
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2.40 1.95 5.86 0.42 50% 46% Tryget [empty] mbox
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0.47 0.00 0.65 0.26 71% 28% Waiting to get mbox
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0.59 0.00 1.30 0.15 84% 12% Waiting to put mbox
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4.01 3.26 10.42 0.40 81% 15% Delete mbox
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26.18 26.04 30.60 0.28 96% 96% Put/Get mbox
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0.92 0.65 3.91 0.38 71% 71% Init semaphore
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2.24 1.95 6.51 0.43 96% 75% Post [0] semaphore
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2.32 1.95 7.16 0.48 96% 65% Wait [1] semaphore
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2.03 1.30 5.86 0.24 90% 6% Trywait [0] semaphore
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1.91 1.30 4.56 0.23 78% 18% Trywait [1] semaphore
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0.77 0.00 1.95 0.30 65% 9% Peek semaphore
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0.61 0.00 1.95 0.15 84% 12% Destroy semaphore
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22.62 22.14 30.60 0.61 96% 62% Post/Wait semaphore
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0.92 0.65 3.91 0.38 71% 71% Create counter
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0.69 0.65 1.95 0.08 96% 96% Get counter value
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0.41 0.00 1.30 0.33 56% 40% Set counter value
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3.21 2.60 5.86 0.27 71% 21% Tick counter
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0.65 0.00 3.26 0.16 84% 12% Delete counter
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1.57 1.30 4.56 0.38 71% 71% Create alarm
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4.52 3.91 13.02 0.57 50% 46% Initialize alarm
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0.61 0.00 1.95 0.15 84% 12% Disable alarm
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4.43 3.91 9.11 0.43 56% 40% Enable alarm
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0.87 0.65 2.60 0.32 71% 71% Delete alarm
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2.93 2.60 6.51 0.43 96% 65% Tick counter [1 alarm]
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14.83 14.32 22.79 0.60 96% 59% Tick counter [many alarms]
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4.88 4.56 11.07 0.51 96% 78% Tick & fire counter [1 alarm]
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83.25 82.03 102.86 1.23 96% 93% Tick & fire counters [>1 together]
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17.58 16.93 27.34 0.61 50% 46% Tick & fire counters [>1 separately]
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26.18 24.74 40.36 0.30 97% 0% Alarm latency [0 threads]
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33.88 29.30 56.64 1.70 85% 6% Alarm latency [2 threads]
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36.37 29.30 61.20 3.25 53% 24% Alarm latency [many threads]
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7.85 6.51 14.97 0.00 Clock/interrupt latency
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Timing complete - 23540 ms total
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PASS:<Basic timing OK>
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EXIT:<done>
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</PRE
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>Board: Intel IQ80310 XScale Development Kit</TD
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