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>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-&#62;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 &#38; fire counter [1 alarm]
   19.88   19.84   20.11    0.07   84%  84% Tick &#38; fire counters [&#62;1 together]
    4.37    4.35    4.62    0.05   90%  90% Tick &#38; fire counters [&#62;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 -&#62; 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:&lt;Basic timing OK&#62;
EXIT:&lt;done&#62;
        </PRE
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65			`>Appendix B. Real-time characterization</TD`
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85			`NAME="RT-ARM-EBSA285">Board: Intel StrongARM EBSA-285 Evaluation Board</H1`
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94			`>Board: Intel StrongARM EBSA-285 Evaluation Board`
95
96			`CPU : Intel StrongARM SA-110 228MHz`
97
98
99			`Startup, main stack : stack used 404 size 2400`
100			`Startup : Interrupt stack used 136 size 4096`
101			`Startup : Idlethread stack used 80 size 2048`
102
103			`eCos Kernel Timings`
104			`Notes: all times are in microseconds (.000001) unless otherwise stated`
105
106			`Reading the hardware clock takes 1 'ticks' overhead`
107			`... this value will be factored out of all other measurements`
108			`Clock interrupt took 4.61 microseconds (16 raw clock ticks)`
109
110			`Testing parameters:`
111			`Clock samples: 32`
112			`Threads: 64`
113			`Thread switches: 128`
114			`Mutexes: 32`
115			`Mailboxes: 32`
116			`Semaphores: 32`
117			`Scheduler operations: 128`
118			`Counters: 32`
119			`Alarms: 32`
120
121
122			`Confidence`
123			`Ave Min Max Var Ave Min Function`
124			`====== ====== ====== ====== ========== ========`
125			`4.97 3.26 7.34 0.60 50% 4% Create thread`
126			`0.73 0.54 2.17 0.14 60% 37% Yield thread [all suspended]`
127			`0.98 0.82 2.99 0.23 81% 68% Suspend [suspended] thread`
128			`0.54 0.27 1.63 0.03 92% 6% Resume thread`
129			`0.83 0.54 1.90 0.10 73% 14% Set priority`
130			`0.21 0.00 0.54 0.21 25% 48% Get priority`
131			`2.25 1.90 10.05 0.37 96% 67% Kill [suspended] thread`
132			`0.70 0.54 1.09 0.14 53% 45% Yield [no other] thread`
133			`0.96 0.82 1.36 0.14 50% 48% Resume [suspended low prio] thread`
134			`0.53 0.27 0.82 0.03 92% 6% Resume [runnable low prio] thread`
135			`0.90 0.82 1.63 0.13 70% 70% Suspend [runnable] thread`
136			`0.70 0.54 0.82 0.13 57% 42% Yield [only low prio] thread`
137			`0.55 0.54 0.82 0.01 98% 98% Suspend [runnable->not runnable]`
138			`1.64 1.63 2.17 0.02 98% 98% Kill [runnable] thread`
139			`0.97 0.82 4.62 0.20 98% 64% Destroy [dead] thread`
140			`2.17 1.90 2.17 0.01 98% 1% Destroy [runnable] thread`
141			`6.06 5.16 10.60 0.53 59% 31% Resume [high priority] thread`
142			`1.69 1.63 5.98 0.11 90% 90% Thread switch`
143
144			`0.14 0.00 1.36 0.14 99% 50% Scheduler lock`
145			`0.37 0.27 0.54 0.13 62% 62% Scheduler unlock [0 threads]`
146			`0.38 0.27 0.54 0.13 60% 60% Scheduler unlock [1 suspended]`
147			`0.37 0.27 0.54 0.13 63% 63% Scheduler unlock [many suspended]`
148			`0.37 0.27 0.54 0.13 63% 63% Scheduler unlock [many low prio]`
149
150			`0.34 0.00 1.90 0.15 78% 6% Init mutex`
151			`0.88 0.54 4.62 0.37 93% 71% Lock [unlocked] mutex`
152			`0.79 0.54 4.35 0.26 93% 53% Unlock [locked] mutex`
153			`0.59 0.27 2.17 0.10 93% 3% Trylock [unlocked] mutex`
154			`0.50 0.27 0.82 0.09 78% 18% Trylock [locked] mutex`
155			`0.18 0.00 0.54 0.13 59% 37% Destroy mutex`
156			`3.85 3.80 5.16 0.08 96% 96% Unlock/Lock mutex`
157
158			`0.64 0.27 3.53 0.24 81% 15% Create mbox`
159			`0.61 0.27 2.17 0.21 68% 18% Peek [empty] mbox`
160			`0.87 0.54 5.16 0.31 59% 87% Put [first] mbox`
161			`0.08 0.00 0.54 0.12 71% 71% Peek [1 msg] mbox`
162			`0.71 0.54 1.09 0.14 56% 40% Put [second] mbox`
163			`0.08 0.00 0.27 0.12 68% 68% Peek [2 msgs] mbox`
164			`0.89 0.54 4.89 0.31 62% 81% Get [first] mbox`
165			`0.76 0.54 1.09 0.17 43% 37% Get [second] mbox`
166			`0.76 0.54 3.26 0.21 96% 50% Tryput [first] mbox`
167			`0.65 0.54 2.45 0.17 81% 81% Peek item [non-empty] mbox`
168			`0.76 0.54 2.72 0.19 53% 43% Tryget [non-empty] mbox`
169			`0.58 0.54 0.82 0.06 87% 87% Peek item [empty] mbox`
170			`0.61 0.54 0.82 0.10 75% 75% Tryget [empty] mbox`
171			`0.10 0.00 0.54 0.13 65% 65% Waiting to get mbox`
172			`0.10 0.00 0.54 0.13 65% 65% Waiting to put mbox`
173			`0.77 0.54 3.26 0.20 53% 43% Delete mbox`
174			`2.10 1.90 6.25 0.30 93% 93% Put/Get mbox`
175
176			`0.34 0.27 1.09 0.11 81% 81% Init semaphore`
177			`0.60 0.27 1.09 0.12 68% 6% Post [0] semaphore`
178			`0.59 0.54 0.82 0.08 81% 81% Wait [1] semaphore`
179			`0.59 0.54 2.17 0.10 96% 96% Trywait [0] semaphore`
180			`0.48 0.27 0.82 0.11 71% 25% Trywait [1] semaphore`
181			`0.24 0.00 0.82 0.09 78% 18% Peek semaphore`
182			`0.19 0.00 0.54 0.13 62% 34% Destroy semaphore`
183			`2.28 2.17 4.08 0.18 93% 90% Post/Wait semaphore`
184
185			`0.43 0.00 2.72 0.23 90% 6% Create counter`
186			`0.40 0.00 1.63 0.25 68% 28% Get counter value`
187			`0.13 0.00 0.82 0.15 96% 59% Set counter value`
188			`0.71 0.54 1.63 0.16 50% 46% Tick counter`
189			`0.16 0.00 0.54 0.14 53% 43% Delete counter`
190
191			`0.47 0.27 1.36 0.15 59% 37% Create alarm`
192			`1.58 1.09 7.07 0.44 71% 68% Initialize alarm`
193			`0.12 0.00 1.09 0.16 96% 65% Disable alarm`
194			`1.01 0.82 2.45 0.17 53% 43% Enable alarm`
195			`0.21 0.00 0.27 0.09 78% 21% Delete alarm`
196			`0.78 0.54 1.90 0.12 71% 25% Tick counter [1 alarm]`
197			`3.90 3.80 4.35 0.13 68% 68% Tick counter [many alarms]`
198			`1.25 1.09 1.63 0.14 53% 43% Tick & fire counter [1 alarm]`
199			`19.88 19.84 20.11 0.07 84% 84% Tick & fire counters [>1 together]`
200			`4.37 4.35 4.62 0.05 90% 90% Tick & fire counters [>1 separately]`
201			`3.83 3.80 7.61 0.06 99% 99% Alarm latency [0 threads]`
202			`4.46 3.80 7.88 0.27 71% 24% Alarm latency [2 threads]`
203			`16.06 13.59 26.36 1.05 54% 10% Alarm latency [many threads]`
204			`6.67 6.52 22.83 0.29 98% 98% Alarm -> thread resume latency`
205
206			`1.89 0.82 9.78 0.00 Clock/interrupt latency`
207
208			`2.17 1.09 7.34 0.00 Clock DSR latency`
209
210			`11 0 316 (main stack: 744) Thread stack used (1120 total)`
211			`All done, main stack : stack used 744 size 2400`
212			`All done : Interrupt stack used 288 size 4096`
213			`All done : Idlethread stack used 268 size 2048`
214
215			`Timing complete - 30210 ms total`
216
217			`PASS:<Basic timing OK>`
218			`EXIT:<done>`
219			`</PRE`
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230			`WIDTH="100%"`
231			`BORDER="0"`
232			`CELLPADDING="0"`
233			`CELLSPACING="0"`
234			`><TR`
235			`><TD`
236			`WIDTH="33%"`
237			`ALIGN="left"`
238			`VALIGN="top"`
239			`><A`
240			`HREF="rt-at91-eb40.html"`
241			`ACCESSKEY="P"`
242			`>Prev</A`
243			`></TD`
244			`><TD`
245			`WIDTH="34%"`
246			`ALIGN="center"`
247			`VALIGN="top"`
248			`><A`
249			`HREF="ecos-user-guide.html"`
250			`ACCESSKEY="H"`
251			`>Home</A`
252			`></TD`
253			`><TD`
254			`WIDTH="33%"`
255			`ALIGN="right"`
256			`VALIGN="top"`
257			`><A`
258			`HREF="rt-arm-ep7211.html"`
259			`ACCESSKEY="N"`
260			`>Next</A`
261			`></TD`
262			`></TR`
263			`><TR`
264			`><TD`
265			`WIDTH="33%"`
266			`ALIGN="left"`
267			`VALIGN="top"`
268			`>Board: Atmel AT91/EB40</TD`
269			`><TD`
270			`WIDTH="34%"`
271			`ALIGN="center"`
272			`VALIGN="top"`
273			`><A`
274			`HREF="real-time-characterization.html"`
275			`ACCESSKEY="U"`
276			`>Up</A`
277			`></TD`
278			`><TD`
279			`WIDTH="33%"`
280			`ALIGN="right"`
281			`VALIGN="top"`
282			`>Board: Cirrus Logic EDB7111-2 Development Board</TD`
283			`></TR`
284			`></TABLE`
285			`></DIV`
286			`></BODY`
287			`></HTML`
288			`>`