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<HTML
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><HEAD
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>Board: NEC V850 Cosmo Evaluation Board</TITLE
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"><LINK
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TITLE="Real-time characterization"
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>eCos User Guide</TH
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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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WIDTH="10%"
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NAME="RT-V850-CEBSB1">Board: NEC V850 Cosmo Evaluation Board</H1
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BORDER="5"
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WIDTH="70%"
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><TR
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><TD
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><PRE
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CLASS="LITERALLAYOUT"
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>Board: NEC V850 Cosmo Evaluation Board
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CPU: NEC CEB-V850/SB1 16MHz (in internal Flash)
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Startup, main stack : stack used 572 size 2936
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Startup : Interrupt stack used 132 size 4096
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Startup : Idlethread stack used 210 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 8 'ticks' overhead
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... this value will be factored out of all other measurements
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Clock interrupt took 118.15 microseconds (472 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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113.68 111.00 116.50 1.63 42% 28% Create thread
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30.00 30.00 30.00 0.00 100% 100% Yield thread [all suspended]
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29.57 29.50 29.75 0.10 71% 71% Suspend [suspended] thread
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27.43 27.25 27.50 0.10 71% 28% Resume thread
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34.11 34.00 34.25 0.12 57% 57% Set priority
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1.57 1.50 1.75 0.10 71% 71% Get priority
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72.96 72.75 73.00 0.06 85% 14% Kill [suspended] thread
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30.00 30.00 30.00 0.00 100% 100% Yield [no other] thread
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42.75 42.75 42.75 0.00 100% 100% Resume [suspended low prio] thread
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27.00 27.00 27.00 0.00 100% 100% Resume [runnable low prio] thread
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43.64 41.25 44.25 0.68 85% 14% Suspend [runnable] thread
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30.00 30.00 30.00 0.00 100% 100% Yield [only low prio] thread
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29.57 29.50 29.75 0.10 71% 71% Suspend [runnable->not runnable]
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72.93 72.75 73.00 0.10 71% 28% Kill [runnable] thread
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44.89 44.75 45.75 0.24 85% 85% Destroy [dead] thread
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103.00 101.50 103.25 0.43 85% 14% Destroy [runnable] thread
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175.21 171.50 197.50 6.37 85% 85% Resume [high priority] thread
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84.11 79.50 197.25 1.77 98% 0% Thread switch
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1.00 1.00 1.00 0.00 100% 100% Scheduler lock
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20.06 20.00 20.25 0.09 75% 75% Scheduler unlock [0 threads]
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20.00 20.00 20.00 0.00 100% 100% Scheduler unlock [1 suspended]
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20.06 20.00 20.25 0.09 75% 75% Scheduler unlock [many suspended]
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20.06 20.00 20.25 0.09 75% 75% Scheduler unlock [many low prio]
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4.00 4.00 4.00 0.00 100% 100% Init mutex
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33.00 33.00 33.00 0.00 100% 100% Lock [unlocked] mutex
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36.77 36.75 37.25 0.03 96% 96% Unlock [locked] mutex
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28.13 28.00 28.25 0.13 100% 50% Trylock [unlocked] mutex
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25.13 25.00 25.25 0.13 100% 50% Trylock [locked] mutex
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4.88 4.75 5.00 0.13 100% 50% Destroy mutex
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187.00 187.00 187.00 0.00 100% 100% Unlock/Lock mutex
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10.00 10.00 10.00 0.00 100% 100% Create mbox
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0.69 0.50 0.75 0.09 75% 25% Peek [empty] mbox
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34.75 34.75 34.75 0.00 100% 100% Put [first] mbox
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0.69 0.50 0.75 0.09 75% 25% Peek [1 msg] mbox
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35.00 35.00 35.00 0.00 100% 100% Put [second] mbox
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0.69 0.50 0.75 0.09 75% 25% Peek [2 msgs] mbox
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36.00 36.00 36.00 0.00 100% 100% Get [first] mbox
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36.00 36.00 36.00 0.00 100% 100% Get [second] mbox
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31.00 31.00 31.00 0.00 100% 100% Tryput [first] mbox
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29.50 29.50 29.50 0.00 100% 100% Peek item [non-empty] mbox
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35.25 35.25 35.25 0.00 100% 100% Tryget [non-empty] mbox
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27.69 27.50 27.75 0.09 75% 25% Peek item [empty] mbox
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31.06 31.00 31.25 0.09 75% 75% Tryget [empty] mbox
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0.94 0.75 1.00 0.09 75% 25% Waiting to get mbox
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0.94 0.75 1.00 0.09 75% 25% Waiting to put mbox
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37.81 37.75 38.00 0.09 75% 75% Delete mbox
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112.00 112.00 112.00 0.00 100% 100% Put/Get mbox
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3.19 3.00 3.25 0.09 75% 25% Init semaphore
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25.38 25.25 25.50 0.13 100% 50% Post [0] semaphore
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32.63 32.50 32.75 0.13 100% 50% Wait [1] semaphore
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24.25 24.25 24.25 0.00 100% 100% Trywait [0] semaphore
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25.00 25.00 25.00 0.00 100% 100% Trywait [1] semaphore
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4.00 4.00 4.00 0.00 100% 100% Peek semaphore
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4.88 4.75 5.00 0.13 100% 50% Destroy semaphore
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124.50 124.50 124.50 0.00 100% 100% Post/Wait semaphore
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6.50 6.50 6.50 0.00 100% 100% Create counter
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1.25 1.25 1.25 0.00 100% 100% Get counter value
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1.44 1.25 1.50 0.09 75% 25% Set counter value
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36.25 36.25 36.25 0.00 100% 100% Tick counter
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5.25 5.25 5.25 0.00 100% 100% Delete counter
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12.25 12.25 12.25 0.00 100% 100% Create alarm
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49.13 49.00 49.25 0.13 100% 50% Initialize alarm
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2.81 2.75 3.00 0.09 75% 75% Disable alarm
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48.50 48.50 48.50 0.00 100% 100% Enable alarm
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8.25 8.25 8.25 0.00 100% 100% Delete alarm
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46.50 46.50 46.50 0.00 100% 100% Tick counter [1 alarm]
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485.42 482.25 580.00 5.91 96% 96% Tick counter [many alarms]
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64.00 64.00 64.00 0.00 100% 100% Tick & fire counter [1 alarm]
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1109.76 1100.50 1198.00 16.53 90% 90% Tick & fire counters [>1 together]
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505.85 502.00 621.00 7.20 96% 96% Tick & fire counters [>1 separately]
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96.26 95.75 161.25 1.02 99% 99% Alarm latency [0 threads]
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159.20 95.75 160.75 2.52 97% 0% Alarm latency [2 threads]
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159.73 110.50 161.75 1.53 97% 0% Alarm latency [many threads]
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218.45 211.25 445.75 3.55 97% 1% Alarm -> thread resume latency
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28.24 25.25 43.25 0.00 Clock/interrupt latency
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60.15 40.50 221.50 0.00 Clock DSR latency
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472 424 572 (main stack: 1052) Thread stack used (1912 total)
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All done, main stack : stack used 1052 size 2936
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All done : Interrupt stack used 280 size 4096
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All done : Idlethread stack used 516 size 2048
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Timing complete - 30590 ms total
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PASS:<Basic timing OK>
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EXIT:<done> </PRE
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