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+>Board: Intel SA1110 (Assabet)</TITLE
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+>eCos User Guide</TH
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+>Appendix B. Real-time characterization</TD
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+><A
+NAME="RT-ARM-ASSABET">Board: Intel SA1110 (Assabet)</H1
+><TABLE
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+><PRE
+CLASS="LITERALLAYOUT"
+>Board: Intel SA1110 (Assabet)
+
+CPU : StrongARM 221.2 MHz
+
+
+
+Microseconds for one run through Dhrystone: 3.3
+Dhrystones per Second: 306748.5
+VAX MIPS rating = 174.586
+
+Startup, main stack : stack used 420 size 2400
+Startup : Interrupt stack used 136 size 4096
+Startup : Idlethread stack used 84 size 2048
+
+eCos Kernel Timings
+Notes: all times are in microseconds (.000001) unless otherwise stated
+
+Reading the hardware clock takes 0 `ticks' overhead
+... this value will be factored out of all other measurements
+Clock interrupt took 3.20 microseconds (11 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
+ ====== ====== ====== ====== ========== ========
+ 5.98 4.88 14.38 0.70 57% 35% Create thread
+ 0.86 0.81 1.90 0.08 87% 87% Yield thread [all suspended]
+ 1.05 0.81 3.53 0.19 46% 39% Suspend [suspended] thread
+ 1.07 0.81 3.80 0.18 48% 35% Resume thread
+ 1.36 1.09 5.97 0.22 45% 39% Set priority
+ 0.73 0.54 1.90 0.19 85% 50% Get priority
+ 2.93 2.44 13.56 0.39 79% 70% Kill [suspended] thread
+ 0.89 0.81 4.34 0.14 89% 89% Yield [no other] thread
+ 1.63 1.36 4.61 0.17 57% 29% Resume [suspended low prio] thread
+ 1.03 0.81 3.53 0.19 46% 42% Resume [runnable low prio] thread
+ 1.74 1.36 6.51 0.22 87% 6% Suspend [runnable] thread
+ 0.93 0.81 4.61 0.18 98% 78% Yield [only low prio] thread
+ 1.06 0.81 3.26 0.19 42% 39% Suspend [runnable->not runnable]
+ 2.56 1.90 13.02 0.41 87% 34% Kill [runnable] thread
+ 2.02 1.63 7.05 0.22 92% 3% Destroy [dead] thread
+ 3.09 2.44 15.19 0.51 78% 46% Destroy [runnable] thread
+ 6.77 5.43 13.02 0.59 75% 17% Resume [high priority] thread
+ 1.81 1.63 7.87 0.18 49% 49% Thread switch
+
+ 0.25 0.00 1.36 0.05 89% 10% Scheduler lock
+ 0.51 0.27 1.36 0.06 85% 13% Scheduler unlock [0 threads]
+ 0.51 0.27 1.09 0.06 85% 13% Scheduler unlock [1 suspended]
+ 0.51 0.27 1.09 0.07 85% 14% Scheduler unlock [many suspended]
+ 0.51 0.27 1.09 0.06 85% 13% Scheduler unlock [many low prio]
+
+ 0.52 0.27 2.17 0.15 62% 31% Init mutex
+ 0.97 0.54 4.34 0.28 84% 65% Lock [unlocked] mutex
+ 1.05 0.81 5.15 0.28 96% 96% Unlock [locked] mutex
+ 0.86 0.54 3.26 0.24 65% 31% Trylock [unlocked] mutex
+ 0.79 0.54 3.53 0.23 43% 46% Trylock [locked] mutex
+ 0.33 0.27 1.63 0.11 90% 90% Destroy mutex
+ 4.16 3.80 8.95 0.30 75% 96% Unlock/Lock mutex
+
+ 0.70 0.54 2.98 0.21 96% 65% Create mbox
+ 0.59 0.27 1.63 0.14 75% 9% Peek [empty] mbox
+ 1.33 1.09 5.70 0.31 96% 93% Put [first] mbox
+ 0.61 0.27 1.63 0.13 81% 3% Peek [1 msg] mbox
+ 1.35 1.09 5.43 0.31 96% 87% Put [second] mbox
+ 0.58 0.27 1.36 0.11 78% 6% Peek [2 msgs] mbox
+ 1.38 1.09 4.88 0.25 59% 37% Get [first] mbox
+ 1.40 1.09 5.15 0.26 62% 34% Get [second] mbox
+ 1.27 0.81 4.88 0.28 90% 65% Tryput [first] mbox
+ 1.34 0.81 4.61 0.22 59% 6% Peek item [non-empty] mbox
+ 1.47 1.09 5.15 0.27 84% 12% Tryget [non-empty] mbox
+ 1.12 0.81 4.34 0.23 59% 31% Peek item [empty] mbox
+ 1.14 0.81 4.07 0.24 71% 25% Tryget [empty] mbox
+ 0.59 0.27 1.36 0.12 78% 6% Waiting to get mbox
+ 0.59 0.27 1.36 0.12 78% 6% Waiting to put mbox
+ 1.28 0.81 5.43 0.32 87% 78% Delete mbox
+ 2.64 2.17 10.31 0.48 96% 96% Put/Get mbox
+
+ 0.47 0.27 2.17 0.19 46% 46% Init semaphore
+ 0.77 0.54 3.80 0.26 90% 56% Post [0] semaphore
+ 0.90 0.54 4.07 0.26 75% 21% Wait [1] semaphore
+ 0.85 0.54 3.26 0.21 56% 28% Trywait [0] semaphore
+ 0.69 0.54 2.17 0.18 96% 62% Trywait [1] semaphore
+ 0.44 0.27 2.17 0.19 96% 56% Peek semaphore
+ 0.38 0.27 1.90 0.17 96% 75% Destroy semaphore
+ 2.74 2.44 9.49 0.42 96% 96% Post/Wait semaphore
+
+ 0.43 0.27 1.90 0.18 96% 56% Create counter
+ 0.49 0.00 2.17 0.18 56% 3% Get counter value
+ 0.33 0.00 1.63 0.13 78% 6% Set counter value
+ 1.03 0.81 2.44 0.22 84% 50% Tick counter
+ 0.42 0.27 1.90 0.20 90% 65% Delete counter
+
+ 0.70 0.54 2.44 0.20 93% 62% Create alarm
+ 1.65 1.36 6.78 0.40 96% 81% Initialize alarm
+ 0.75 0.54 1.63 0.18 43% 43% Disable alarm
+ 1.75 1.36 7.05 0.38 65% 81% Enable alarm
+ 0.81 0.54 2.44 0.15 62% 28% Delete alarm
+ 1.01 0.81 2.17 0.16 56% 40% Tick counter [1 alarm]
+ 4.19 4.07 5.43 0.16 96% 68% Tick counter [many alarms]
+ 1.48 1.36 3.80 0.20 96% 78% Tick & fire counter [1 alarm]
+ 20.23 20.07 22.52 0.21 96% 65% Tick & fire counters [>1 together]
+ 4.70 4.61 6.78 0.16 87% 87% Tick & fire counters [>1 separately]
+ 2.81 2.71 14.38 0.20 98% 98% Alarm latency [0 threads]
+ 3.19 2.71 13.56 0.38 73% 59% Alarm latency [2 threads]
+ 9.71 7.87 18.17 1.25 59% 53% Alarm latency [many threads]
+ 5.77 5.43 45.57 0.68 97% 97% Alarm -> thread resume latency
+
+ 2.38 0.81 9.49 0.00 Clock/interrupt latency
+
+ 2.02 1.09 7.32 0.00 Clock DSR latency
+
+ 11 0 316 (main stack: 764) Thread stack used (1120 total)
+All done, main stack : stack used 764 size 2400
+All done : Interrupt stack used 287 size 4096
+All done : Idlethread stack used 272 size 2048
+
+Timing complete - 30220 ms total
+ </PRE
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