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+>Board: Intel StrongARM EBSA-285 Evaluation Board</TITLE
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+>Appendix B. Real-time characterization</TD
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+><A
+NAME="RT-ARM-EBSA285">Board: Intel StrongARM EBSA-285 Evaluation Board</H1
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+><PRE
+CLASS="LITERALLAYOUT"
+>Board: Intel StrongARM EBSA-285 Evaluation Board
+
+CPU : Intel StrongARM SA-110 228MHz
+
+
+Startup, main stack : stack used 404 size 2400
+Startup : Interrupt stack used 136 size 4096
+Startup : Idlethread stack used 80 size 2048
+
+eCos Kernel Timings
+Notes: all times are in microseconds (.000001) unless otherwise stated
+
+Reading the hardware clock takes 1 'ticks' overhead
+... this value will be factored out of all other measurements
+Clock interrupt took 4.61 microseconds (16 raw clock ticks)
+
+Testing parameters:
+ Clock samples: 32
+ Threads: 64
+ Thread switches: 128
+ Mutexes: 32
+ Mailboxes: 32
+ Semaphores: 32
+ Scheduler operations: 128
+ Counters: 32
+ Alarms: 32
+
+
+ Confidence
+ Ave Min Max Var Ave Min Function
+ ====== ====== ====== ====== ========== ========
+ 4.97 3.26 7.34 0.60 50% 4% Create thread
+ 0.73 0.54 2.17 0.14 60% 37% Yield thread [all suspended]
+ 0.98 0.82 2.99 0.23 81% 68% Suspend [suspended] thread
+ 0.54 0.27 1.63 0.03 92% 6% Resume thread
+ 0.83 0.54 1.90 0.10 73% 14% Set priority
+ 0.21 0.00 0.54 0.21 25% 48% Get priority
+ 2.25 1.90 10.05 0.37 96% 67% Kill [suspended] thread
+ 0.70 0.54 1.09 0.14 53% 45% Yield [no other] thread
+ 0.96 0.82 1.36 0.14 50% 48% Resume [suspended low prio] thread
+ 0.53 0.27 0.82 0.03 92% 6% Resume [runnable low prio] thread
+ 0.90 0.82 1.63 0.13 70% 70% Suspend [runnable] thread
+ 0.70 0.54 0.82 0.13 57% 42% Yield [only low prio] thread
+ 0.55 0.54 0.82 0.01 98% 98% Suspend [runnable->not runnable]
+ 1.64 1.63 2.17 0.02 98% 98% Kill [runnable] thread
+ 0.97 0.82 4.62 0.20 98% 64% Destroy [dead] thread
+ 2.17 1.90 2.17 0.01 98% 1% Destroy [runnable] thread
+ 6.06 5.16 10.60 0.53 59% 31% Resume [high priority] thread
+ 1.69 1.63 5.98 0.11 90% 90% Thread switch
+
+ 0.14 0.00 1.36 0.14 99% 50% Scheduler lock
+ 0.37 0.27 0.54 0.13 62% 62% Scheduler unlock [0 threads]
+ 0.38 0.27 0.54 0.13 60% 60% Scheduler unlock [1 suspended]
+ 0.37 0.27 0.54 0.13 63% 63% Scheduler unlock [many suspended]
+ 0.37 0.27 0.54 0.13 63% 63% Scheduler unlock [many low prio]
+
+ 0.34 0.00 1.90 0.15 78% 6% Init mutex
+ 0.88 0.54 4.62 0.37 93% 71% Lock [unlocked] mutex
+ 0.79 0.54 4.35 0.26 93% 53% Unlock [locked] mutex
+ 0.59 0.27 2.17 0.10 93% 3% Trylock [unlocked] mutex
+ 0.50 0.27 0.82 0.09 78% 18% Trylock [locked] mutex
+ 0.18 0.00 0.54 0.13 59% 37% Destroy mutex
+ 3.85 3.80 5.16 0.08 96% 96% Unlock/Lock mutex
+
+ 0.64 0.27 3.53 0.24 81% 15% Create mbox
+ 0.61 0.27 2.17 0.21 68% 18% Peek [empty] mbox
+ 0.87 0.54 5.16 0.31 59% 87% Put [first] mbox
+ 0.08 0.00 0.54 0.12 71% 71% Peek [1 msg] mbox
+ 0.71 0.54 1.09 0.14 56% 40% Put [second] mbox
+ 0.08 0.00 0.27 0.12 68% 68% Peek [2 msgs] mbox
+ 0.89 0.54 4.89 0.31 62% 81% Get [first] mbox
+ 0.76 0.54 1.09 0.17 43% 37% Get [second] mbox
+ 0.76 0.54 3.26 0.21 96% 50% Tryput [first] mbox
+ 0.65 0.54 2.45 0.17 81% 81% Peek item [non-empty] mbox
+ 0.76 0.54 2.72 0.19 53% 43% Tryget [non-empty] mbox
+ 0.58 0.54 0.82 0.06 87% 87% Peek item [empty] mbox
+ 0.61 0.54 0.82 0.10 75% 75% Tryget [empty] mbox
+ 0.10 0.00 0.54 0.13 65% 65% Waiting to get mbox
+ 0.10 0.00 0.54 0.13 65% 65% Waiting to put mbox
+ 0.77 0.54 3.26 0.20 53% 43% Delete mbox
+ 2.10 1.90 6.25 0.30 93% 93% Put/Get mbox
+
+ 0.34 0.27 1.09 0.11 81% 81% Init semaphore
+ 0.60 0.27 1.09 0.12 68% 6% Post [0] semaphore
+ 0.59 0.54 0.82 0.08 81% 81% Wait [1] semaphore
+ 0.59 0.54 2.17 0.10 96% 96% Trywait [0] semaphore
+ 0.48 0.27 0.82 0.11 71% 25% Trywait [1] semaphore
+ 0.24 0.00 0.82 0.09 78% 18% Peek semaphore
+ 0.19 0.00 0.54 0.13 62% 34% Destroy semaphore
+ 2.28 2.17 4.08 0.18 93% 90% Post/Wait semaphore
+
+ 0.43 0.00 2.72 0.23 90% 6% Create counter
+ 0.40 0.00 1.63 0.25 68% 28% Get counter value
+ 0.13 0.00 0.82 0.15 96% 59% Set counter value
+ 0.71 0.54 1.63 0.16 50% 46% Tick counter
+ 0.16 0.00 0.54 0.14 53% 43% Delete counter
+
+ 0.47 0.27 1.36 0.15 59% 37% Create alarm
+ 1.58 1.09 7.07 0.44 71% 68% Initialize alarm
+ 0.12 0.00 1.09 0.16 96% 65% Disable alarm
+ 1.01 0.82 2.45 0.17 53% 43% Enable alarm
+ 0.21 0.00 0.27 0.09 78% 21% Delete alarm
+ 0.78 0.54 1.90 0.12 71% 25% Tick counter [1 alarm]
+ 3.90 3.80 4.35 0.13 68% 68% Tick counter [many alarms]
+ 1.25 1.09 1.63 0.14 53% 43% Tick & fire counter [1 alarm]
+ 19.88 19.84 20.11 0.07 84% 84% Tick & fire counters [>1 together]
+ 4.37 4.35 4.62 0.05 90% 90% Tick & fire counters [>1 separately]
+ 3.83 3.80 7.61 0.06 99% 99% Alarm latency [0 threads]
+ 4.46 3.80 7.88 0.27 71% 24% Alarm latency [2 threads]
+ 16.06 13.59 26.36 1.05 54% 10% Alarm latency [many threads]
+ 6.67 6.52 22.83 0.29 98% 98% Alarm -> thread resume latency
+
+ 1.89 0.82 9.78 0.00 Clock/interrupt latency
+
+ 2.17 1.09 7.34 0.00 Clock DSR latency
+
+ 11 0 316 (main stack: 744) Thread stack used (1120 total)
+All done, main stack : stack used 744 size 2400
+All done : Interrupt stack used 288 size 4096
+All done : Idlethread stack used 268 size 2048
+
+Timing complete - 30210 ms total
+
+PASS:<Basic timing OK>
+EXIT:<done>
+ </PRE
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