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CLASS="LITERALLAYOUT"
>Board: Atmel AT91/EB40
CPU : AT91R40807 (ARM7TDMI core), 32MHz
512KB RAM, 64K Flash
 
Startup, main stack             : stack used   420 size  2400
Startup              :  Interrupt stack used   144 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 3 'ticks' overhead
... this value will be factored out of all other measurements
Clock interrupt took  127.53 microseconds (130 raw clock ticks)
 
Testing parameters:
   Clock samples:            32
   Threads:                  25
   Thread switches:         128
   Mutexes:                  32
   Mailboxes:                32
   Semaphores:               32
   Scheduler operations:    128
   Counters:                 32
   Alarms:                   32
 
 
                                 Confidence
     Ave     Min     Max     Var  Ave  Min  Function
  ======  ======  ======  ====== ========== ========
   86.48   71.29  101.56    7.99   48%  28% Create thread
   20.70   20.51   21.48    0.31   80%  80% Yield thread [all suspended]
   17.15   16.60   17.58    0.48   56%  44% Suspend [suspended] thread
   17.07   16.60   17.58    0.49   52%  52% Resume thread
   25.51   25.39   26.37    0.21   88%  88% Set priority
    3.16    2.93    3.91    0.36   76%  76% Get priority
   52.34   51.76   52.73    0.47   60%  40% Kill [suspended] thread
   20.70   20.51   21.48    0.31   80%  80% Yield [no other] thread
   28.98   28.32   30.27    0.48   60%  36% Resume [suspended low prio] thread
   17.11   16.60   17.58    0.49   52%  48% Resume [runnable low prio] thread
   27.85   26.37   28.32    0.52   96%   4% Suspend [runnable] thread
   20.70   20.51   21.48    0.31   80%  80% Yield [only low prio] thread
   17.23   16.60   17.58    0.45   64%  36% Suspend [runnable-&#62;not runnable]
   52.34   51.76   52.73    0.47   60%  40% Kill [runnable] thread
   33.01   32.23   33.20    0.31   80%  20% Destroy [dead] thread
   72.03   70.31   72.27    0.38   80%   4% Destroy [runnable] thread
   96.99   95.70  112.30    1.22   64%  96% Resume [high priority] thread
   51.48   49.80  164.06    1.76   99%  99% Thread switch
 
    2.78    1.95    2.93    0.26   84%  15% Scheduler lock
   11.81   11.72   12.70    0.17   90%  90% Scheduler unlock [0 threads]
   11.81   11.72   12.70    0.17   90%  90% Scheduler unlock [1 suspended]
   11.81   11.72   12.70    0.17   90%  90% Scheduler unlock [many suspended]
   11.81   11.72   12.70    0.17   90%  90% Scheduler unlock [many low prio]
 
    5.49    4.88    5.86    0.46   62%  37% Init mutex
   20.20   19.53   20.51    0.42   68%  31% Lock [unlocked] mutex
   24.44   24.41   25.39    0.06   96%  96% Unlock [locked] mutex
   18.25   17.58   18.55    0.42   68%  31% Trylock [unlocked] mutex
   16.11   15.63   16.60    0.49  100%  50% Trylock [locked] mutex
    6.10    5.86    6.84    0.37   75%  75% Destroy mutex
  124.21  124.02  125.00    0.30   81%  81% Unlock/Lock mutex
 
    9.28    8.79    9.77    0.49  100%  50% Create mbox
    2.93    2.93    2.93    0.00  100% 100% Peek [empty] mbox
   22.58   22.46   23.44    0.21   87%  87% Put [first] mbox
    2.44    1.95    2.93    0.49  100%  50% Peek [1 msg] mbox
   22.58   22.46   23.44    0.21   87%  87% Put [second] mbox
    2.44    1.95    2.93    0.49  100%  50% Peek [2 msgs] mbox
   22.71   22.46   23.44    0.37   75%  75% Get [first] mbox
   22.71   22.46   23.44    0.37   75%  75% Get [second] mbox
   21.18   20.51   21.48    0.42   68%  31% Tryput [first] mbox
   18.98   18.55   19.53    0.48   56%  56% Peek item [non-empty] mbox
   22.46   22.46   22.46    0.00  100% 100% Tryget [non-empty] mbox
   18.31   17.58   18.55    0.37   75%  25% Peek item [empty] mbox
   19.53   19.53   19.53    0.00  100% 100% Tryget [empty] mbox
    2.69    1.95    2.93    0.37   75%  25% Waiting to get mbox
    2.93    2.93    2.93    0.00  100% 100% Waiting to put mbox
   23.86   23.44   24.41    0.48   56%  56% Delete mbox
   67.60   67.38   68.36    0.33   78%  78% Put/Get mbox
 
    5.37    4.88    5.86    0.49  100%  50% Init semaphore
   16.97   16.60   17.58    0.46   62%  62% Post [0] semaphore
   18.98   18.55   19.53    0.48   56%  56% Wait [1] semaphore
   15.81   15.63   16.60    0.30   81%  81% Trywait [0] semaphore
   15.29   14.65   15.63    0.44   65%  34% Trywait [1] semaphore
    5.62    4.88    5.86    0.37   75%  25% Peek semaphore
    6.35    5.86    6.84    0.49  100%  50% Destroy semaphore
   72.36   72.27   73.24    0.17   90%  90% Post/Wait semaphore
 
    7.08    6.84    7.81    0.37   75%  75% Create counter
    3.17    2.93    3.91    0.37   75%  75% Get counter value
    3.05    2.93    3.91    0.21   87%  87% Set counter value
   24.11   23.44   24.41    0.42   68%  31% Tick counter
    5.49    4.88    5.86    0.46   62%  37% Delete counter
 
   10.92   10.74   11.72    0.30   81%  81% Create alarm
   31.46   31.25   32.23    0.33   78%  78% Initialize alarm
    3.05    2.93    3.91    0.21   87%  87% Disable alarm
   31.49   31.25   32.23    0.37   75%  75% Enable alarm
    7.02    6.84    7.81    0.30   81%  81% Delete alarm
   31.16   30.27   31.25    0.17   90%   9% Tick counter [1 alarm]
  309.26  304.69  425.78    7.28   96%  96% Tick counter [many alarms]
   44.83   43.95   44.92    0.17   90%   9% Tick &#38; fire counter [1 alarm]
  781.68  774.41  893.55   13.62   93%  93% Tick &#38; fire counters [&#62;1 together]
  324.16  320.31  433.59    6.84   96%  96% Tick &#38; fire counters [&#62;1 separately]
  114.26  113.28  167.97    0.84   57%  42% Alarm latency [0 threads]
  126.91  113.28  159.18    8.20   50%  31% Alarm latency [2 threads]
  127.11  113.28  158.20    8.09   51%  28% Alarm latency [many threads]
  196.49  189.45  331.05    2.10   98%   0% Alarm -&#62; thread resume latency
 
   23.50   23.44   25.39    0.00            Clock/interrupt latency
 
   40.31   33.20  514.65    0.00            Clock DSR latency
 
  300     271     312  (main stack:   832)  Thread stack used (1120 total)
All done, main stack            : stack used   832 size  2400
All done             :  Interrupt stack used   288 size  4096
All done             : Idlethread stack used   272 size  2048
 
Timing complete - 30350 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-AT91-EB40">Board: Atmel AT91/EB40</H1`
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93			`CLASS="LITERALLAYOUT"`
94			`>Board: Atmel AT91/EB40`
95			`CPU : AT91R40807 (ARM7TDMI core), 32MHz`
96			`512KB RAM, 64K Flash`
97
98			`Startup, main stack : stack used 420 size 2400`
99			`Startup : Interrupt stack used 144 size 4096`
100			`Startup : Idlethread stack used 84 size 2048`
101
102			`eCos Kernel Timings`
103			`Notes: all times are in microseconds (.000001) unless otherwise stated`
104
105			`Reading the hardware clock takes 3 'ticks' overhead`
106			`... this value will be factored out of all other measurements`
107			`Clock interrupt took 127.53 microseconds (130 raw clock ticks)`
108
109			`Testing parameters:`
110			`Clock samples: 32`
111			`Threads: 25`
112			`Thread switches: 128`
113			`Mutexes: 32`
114			`Mailboxes: 32`
115			`Semaphores: 32`
116			`Scheduler operations: 128`
117			`Counters: 32`
118			`Alarms: 32`
119
120
121			`Confidence`
122			`Ave Min Max Var Ave Min Function`
123			`====== ====== ====== ====== ========== ========`
124			`86.48 71.29 101.56 7.99 48% 28% Create thread`
125			`20.70 20.51 21.48 0.31 80% 80% Yield thread [all suspended]`
126			`17.15 16.60 17.58 0.48 56% 44% Suspend [suspended] thread`
127			`17.07 16.60 17.58 0.49 52% 52% Resume thread`
128			`25.51 25.39 26.37 0.21 88% 88% Set priority`
129			`3.16 2.93 3.91 0.36 76% 76% Get priority`
130			`52.34 51.76 52.73 0.47 60% 40% Kill [suspended] thread`
131			`20.70 20.51 21.48 0.31 80% 80% Yield [no other] thread`
132			`28.98 28.32 30.27 0.48 60% 36% Resume [suspended low prio] thread`
133			`17.11 16.60 17.58 0.49 52% 48% Resume [runnable low prio] thread`
134			`27.85 26.37 28.32 0.52 96% 4% Suspend [runnable] thread`
135			`20.70 20.51 21.48 0.31 80% 80% Yield [only low prio] thread`
136			`17.23 16.60 17.58 0.45 64% 36% Suspend [runnable->not runnable]`
137			`52.34 51.76 52.73 0.47 60% 40% Kill [runnable] thread`
138			`33.01 32.23 33.20 0.31 80% 20% Destroy [dead] thread`
139			`72.03 70.31 72.27 0.38 80% 4% Destroy [runnable] thread`
140			`96.99 95.70 112.30 1.22 64% 96% Resume [high priority] thread`
141			`51.48 49.80 164.06 1.76 99% 99% Thread switch`
142
143			`2.78 1.95 2.93 0.26 84% 15% Scheduler lock`
144			`11.81 11.72 12.70 0.17 90% 90% Scheduler unlock [0 threads]`
145			`11.81 11.72 12.70 0.17 90% 90% Scheduler unlock [1 suspended]`
146			`11.81 11.72 12.70 0.17 90% 90% Scheduler unlock [many suspended]`
147			`11.81 11.72 12.70 0.17 90% 90% Scheduler unlock [many low prio]`
148
149			`5.49 4.88 5.86 0.46 62% 37% Init mutex`
150			`20.20 19.53 20.51 0.42 68% 31% Lock [unlocked] mutex`
151			`24.44 24.41 25.39 0.06 96% 96% Unlock [locked] mutex`
152			`18.25 17.58 18.55 0.42 68% 31% Trylock [unlocked] mutex`
153			`16.11 15.63 16.60 0.49 100% 50% Trylock [locked] mutex`
154			`6.10 5.86 6.84 0.37 75% 75% Destroy mutex`
155			`124.21 124.02 125.00 0.30 81% 81% Unlock/Lock mutex`
156
157			`9.28 8.79 9.77 0.49 100% 50% Create mbox`
158			`2.93 2.93 2.93 0.00 100% 100% Peek [empty] mbox`
159			`22.58 22.46 23.44 0.21 87% 87% Put [first] mbox`
160			`2.44 1.95 2.93 0.49 100% 50% Peek [1 msg] mbox`
161			`22.58 22.46 23.44 0.21 87% 87% Put [second] mbox`
162			`2.44 1.95 2.93 0.49 100% 50% Peek [2 msgs] mbox`
163			`22.71 22.46 23.44 0.37 75% 75% Get [first] mbox`
164			`22.71 22.46 23.44 0.37 75% 75% Get [second] mbox`
165			`21.18 20.51 21.48 0.42 68% 31% Tryput [first] mbox`
166			`18.98 18.55 19.53 0.48 56% 56% Peek item [non-empty] mbox`
167			`22.46 22.46 22.46 0.00 100% 100% Tryget [non-empty] mbox`
168			`18.31 17.58 18.55 0.37 75% 25% Peek item [empty] mbox`
169			`19.53 19.53 19.53 0.00 100% 100% Tryget [empty] mbox`
170			`2.69 1.95 2.93 0.37 75% 25% Waiting to get mbox`
171			`2.93 2.93 2.93 0.00 100% 100% Waiting to put mbox`
172			`23.86 23.44 24.41 0.48 56% 56% Delete mbox`
173			`67.60 67.38 68.36 0.33 78% 78% Put/Get mbox`
174
175			`5.37 4.88 5.86 0.49 100% 50% Init semaphore`
176			`16.97 16.60 17.58 0.46 62% 62% Post [0] semaphore`
177			`18.98 18.55 19.53 0.48 56% 56% Wait [1] semaphore`
178			`15.81 15.63 16.60 0.30 81% 81% Trywait [0] semaphore`
179			`15.29 14.65 15.63 0.44 65% 34% Trywait [1] semaphore`
180			`5.62 4.88 5.86 0.37 75% 25% Peek semaphore`
181			`6.35 5.86 6.84 0.49 100% 50% Destroy semaphore`
182			`72.36 72.27 73.24 0.17 90% 90% Post/Wait semaphore`
183
184			`7.08 6.84 7.81 0.37 75% 75% Create counter`
185			`3.17 2.93 3.91 0.37 75% 75% Get counter value`
186			`3.05 2.93 3.91 0.21 87% 87% Set counter value`
187			`24.11 23.44 24.41 0.42 68% 31% Tick counter`
188			`5.49 4.88 5.86 0.46 62% 37% Delete counter`
189
190			`10.92 10.74 11.72 0.30 81% 81% Create alarm`
191			`31.46 31.25 32.23 0.33 78% 78% Initialize alarm`
192			`3.05 2.93 3.91 0.21 87% 87% Disable alarm`
193			`31.49 31.25 32.23 0.37 75% 75% Enable alarm`
194			`7.02 6.84 7.81 0.30 81% 81% Delete alarm`
195			`31.16 30.27 31.25 0.17 90% 9% Tick counter [1 alarm]`
196			`309.26 304.69 425.78 7.28 96% 96% Tick counter [many alarms]`
197			`44.83 43.95 44.92 0.17 90% 9% Tick & fire counter [1 alarm]`
198			`781.68 774.41 893.55 13.62 93% 93% Tick & fire counters [>1 together]`
199			`324.16 320.31 433.59 6.84 96% 96% Tick & fire counters [>1 separately]`
200			`114.26 113.28 167.97 0.84 57% 42% Alarm latency [0 threads]`
201			`126.91 113.28 159.18 8.20 50% 31% Alarm latency [2 threads]`
202			`127.11 113.28 158.20 8.09 51% 28% Alarm latency [many threads]`
203			`196.49 189.45 331.05 2.10 98% 0% Alarm -> thread resume latency`
204
205			`23.50 23.44 25.39 0.00 Clock/interrupt latency`
206
207			`40.31 33.20 514.65 0.00 Clock DSR latency`
208
209			`300 271 312 (main stack: 832) Thread stack used (1120 total)`
210			`All done, main stack : stack used 832 size 2400`
211			`All done : Interrupt stack used 288 size 4096`
212			`All done : Idlethread stack used 272 size 2048`
213
214			`Timing complete - 30350 ms total`
215
216			`PASS:<Basic timing OK>`
217			`EXIT:<done>`
218			`</PRE`
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232			`CELLSPACING="0"`
233			`><TR`
234			`><TD`
235			`WIDTH="33%"`
236			`ALIGN="left"`
237			`VALIGN="top"`
238			`><A`
239			`HREF="real-time-characterization.html"`
240			`ACCESSKEY="P"`
241			`>Prev</A`
242			`></TD`
243			`><TD`
244			`WIDTH="34%"`
245			`ALIGN="center"`
246			`VALIGN="top"`
247			`><A`
248			`HREF="ecos-user-guide.html"`
249			`ACCESSKEY="H"`
250			`>Home</A`
251			`></TD`
252			`><TD`
253			`WIDTH="33%"`
254			`ALIGN="right"`
255			`VALIGN="top"`
256			`><A`
257			`HREF="rt-arm-ebsa285.html"`
258			`ACCESSKEY="N"`
259			`>Next</A`
260			`></TD`
261			`></TR`
262			`><TR`
263			`><TD`
264			`WIDTH="33%"`
265			`ALIGN="left"`
266			`VALIGN="top"`
267			`>Real-time characterization</TD`
268			`><TD`
269			`WIDTH="34%"`
270			`ALIGN="center"`
271			`VALIGN="top"`
272			`><A`
273			`HREF="real-time-characterization.html"`
274			`ACCESSKEY="U"`
275			`>Up</A`
276			`></TD`
277			`><TD`
278			`WIDTH="33%"`
279			`ALIGN="right"`
280			`VALIGN="top"`
281			`>Board: Intel StrongARM EBSA-285 Evaluation Board</TD`
282			`></TR`
283			`></TABLE`
284			`></DIV`
285			`></BODY`
286			`></HTML`
287			`>`