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+>Appendix B. Real-time characterization</TD
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+NAME="RT-I386-PC">Board: PC</H1
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+><PRE
+CLASS="LITERALLAYOUT"
+>Board: PC
+
+CPU: 433MHz Celeron
+
+Startup, main stack : stack used 124 size 2912
+Startup : Interrupt stack used 280 size 4108
+Startup : Idlethread stack used 62 size 2048
+
+eCos Kernel Timings
+Notes: all times are in microseconds (.000001) unless otherwise stated
+
+Reading the hardware clock takes 8 'ticks' overhead
+... this value will be factored out of all other measurements
+Clock interrupt took 6.75 microseconds (8 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
+ ====== ====== ====== ====== ========== ========
+ 3.93 1.68 8.38 0.93 68% 3% Create thread
+ 0.71 0.00 3.35 0.84 59% 59% Yield thread [all suspended]
+ 0.65 0.00 5.03 0.84 64% 64% Suspend [suspended] thread
+ 0.63 0.00 1.68 0.79 62% 62% Resume thread
+ 0.76 0.00 1.68 0.83 54% 54% Set priority
+ 0.39 0.00 1.68 0.60 76% 76% Get priority
+ 1.34 0.00 6.70 0.67 73% 25% Kill [suspended] thread
+ 0.68 0.00 1.68 0.81 59% 59% Yield [no other] thread
+ 0.92 0.00 1.68 0.83 54% 45% Resume [suspended low prio] thread
+ 0.63 0.00 1.68 0.79 62% 62% Resume [runnable low prio] thread
+ 0.84 0.00 1.68 0.84 100% 50% Suspend [runnable] thread
+ 0.73 0.00 1.68 0.82 56% 56% Yield [only low prio] thread
+ 0.58 0.00 1.68 0.76 65% 65% Suspend [runnable->not runnable]
+ 1.26 0.00 3.35 0.67 71% 26% Kill [runnable] thread
+ 0.86 0.00 3.35 0.86 98% 50% Destroy [dead] thread
+ 1.44 0.00 1.68 0.40 85% 14% Destroy [runnable] thread
+ 4.45 3.35 6.70 0.89 53% 40% Resume [high priority] thread
+ 1.62 0.00 1.68 0.10 96% 3% Thread switch
+
+ 0.41 0.00 1.68 0.61 75% 75% Scheduler lock
+ 0.48 0.00 1.68 0.69 71% 71% Scheduler unlock [0 threads]
+ 0.59 0.00 1.68 0.76 64% 64% Scheduler unlock [1 suspended]
+ 0.45 0.00 1.68 0.65 73% 73% Scheduler unlock [many suspended]
+ 0.45 0.00 1.68 0.65 73% 73% Scheduler unlock [many low prio]
+
+ 0.52 0.00 1.68 0.72 68% 68% Init mutex
+ 0.79 0.00 5.03 0.93 96% 59% Lock [unlocked] mutex
+ 0.84 0.00 5.03 0.94 96% 56% Unlock [locked] mutex
+ 0.63 0.00 1.68 0.79 62% 62% Trylock [unlocked] mutex
+ 0.52 0.00 1.68 0.72 68% 68% Trylock [locked] mutex
+ 0.58 0.00 1.68 0.76 65% 65% Destroy mutex
+ 3.40 3.35 5.03 0.10 96% 96% Unlock/Lock mutex
+
+ 0.99 0.00 1.68 0.81 59% 40% Create mbox
+ 0.47 0.00 1.68 0.68 71% 71% Peek [empty] mbox
+ 0.79 0.00 5.03 0.93 96% 59% Put [first] mbox
+ 0.42 0.00 1.68 0.63 75% 75% Peek [1 msg] mbox
+ 0.79 0.00 1.68 0.83 53% 53% Put [second] mbox
+ 0.37 0.00 1.68 0.57 78% 78% Peek [2 msgs] mbox
+ 0.73 0.00 3.35 0.87 59% 59% Get [first] mbox
+ 0.73 0.00 1.68 0.82 56% 56% Get [second] mbox
+ 0.79 0.00 3.35 0.88 56% 56% Tryput [first] mbox
+ 0.68 0.00 3.35 0.85 62% 62% Peek item [non-empty] mbox
+ 0.73 0.00 3.35 0.87 59% 59% Tryget [non-empty] mbox
+ 0.63 0.00 1.68 0.79 62% 62% Peek item [empty] mbox
+ 0.68 0.00 1.68 0.81 59% 59% Tryget [empty] mbox
+ 0.26 0.00 1.68 0.44 84% 84% Waiting to get mbox
+ 0.63 0.00 1.68 0.79 62% 62% Waiting to put mbox
+ 0.73 0.00 3.35 0.87 59% 59% Delete mbox
+ 3.25 1.68 3.35 0.20 93% 6% Put/Get mbox
+
+ 0.63 0.00 1.68 0.79 62% 62% Init semaphore
+ 0.63 0.00 1.68 0.79 62% 62% Post [0] semaphore
+ 0.63 0.00 1.68 0.79 62% 62% Wait [1] semaphore
+ 0.52 0.00 1.68 0.72 68% 68% Trywait [0] semaphore
+ 0.52 0.00 1.68 0.72 68% 68% Trywait [1] semaphore
+ 0.52 0.00 1.68 0.72 68% 68% Peek semaphore
+ 0.21 0.00 1.68 0.37 87% 87% Destroy semaphore
+ 3.30 1.68 3.35 0.10 96% 3% Post/Wait semaphore
+
+ 0.79 0.00 3.35 0.88 56% 56% Create counter
+ 0.42 0.00 1.68 0.63 75% 75% Get counter value
+ 0.37 0.00 1.68 0.57 78% 78% Set counter value
+ 0.73 0.00 1.68 0.82 56% 56% Tick counter
+ 0.63 0.00 1.68 0.79 62% 62% Delete counter
+
+ 0.89 0.00 3.35 0.89 96% 50% Create alarm
+ 0.84 0.00 1.68 0.84 100% 50% Initialize alarm
+ 0.52 0.00 1.68 0.72 68% 68% Disable alarm
+ 0.89 0.00 3.35 0.89 96% 50% Enable alarm
+ 0.58 0.00 1.68 0.76 65% 65% Delete alarm
+ 0.63 0.00 1.68 0.79 62% 62% Tick counter [1 alarm]
+ 5.03 3.35 6.70 0.10 93% 3% Tick counter [many alarms]
+ 0.94 0.00 1.68 0.82 56% 43% Tick & fire counter [1 alarm]
+ 11.16 10.06 11.73 0.76 65% 34% Tick & fire counters [>1 together]
+ 5.19 5.03 6.70 0.28 90% 90% Tick & fire counters [>1 separately]
+ 0.01 0.00 1.68 0.03 99% 99% Alarm latency [0 threads]
+ 0.13 0.00 1.68 0.24 92% 92% Alarm latency [2 threads]
+ 0.94 0.00 3.35 0.85 53% 45% Alarm latency [many threads]
+ 1.75 1.68 6.70 0.15 96% 96% Alarm -> thread resume latency
+
+ 41 0 368 (main stack: 1036) Thread stack used (1712 total)
+All done, main stack : stack used 1036 size 2912
+All done : Interrupt stack used 368 size 4108
+All done : Idlethread stack used 288 size 2048
+
+Timing complete - 28520 ms total
+
+PASS:<Basic timing OK>
+EXIT:<done> </PRE
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