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>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-&#62;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 &#38; fire counter [1 alarm]
   11.16   10.06   11.73    0.76   65%  34% Tick &#38; fire counters [&#62;1 together]
    5.19    5.03    6.70    0.28   90%  90% Tick &#38; fire counters [&#62;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 -&#62; 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:&lt;Basic timing OK&#62;
EXIT:&lt;done&#62;&#13;</PRE
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1	28	unneback	`<!-- Copyright (C) 2003 Red Hat, Inc. -->`
2			`<!-- This material may be distributed only subject to the terms -->`
3			`<!-- and conditions set forth in the Open Publication License, v1.0 -->`
4			`<!-- or later (the latest version is presently available at -->`
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12			`>Board: PC</TITLE`
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49			`>eCos User Guide</TH`
50			`></TR`
51			`><TR`
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59			`>Prev</A`
60			`></TD`
61			`><TD`
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64			`VALIGN="bottom"`
65			`>Appendix B. Real-time characterization</TD`
66			`><TD`
67			`WIDTH="10%"`
68			`ALIGN="right"`
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84			`><A`
85			`NAME="RT-I386-PC">Board: PC</H1`
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92			`><PRE`
93			`CLASS="LITERALLAYOUT"`
94			`>Board: PC`
95
96			`CPU: 433MHz Celeron`
97
98			`Startup, main stack : stack used 124 size 2912`
99			`Startup : Interrupt stack used 280 size 4108`
100			`Startup : Idlethread stack used 62 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 8 'ticks' overhead`
106			`... this value will be factored out of all other measurements`
107			`Clock interrupt took 6.75 microseconds (8 raw clock ticks)`
108
109			`Testing parameters:`
110			`Clock samples: 32`
111			`Threads: 64`
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			`3.93 1.68 8.38 0.93 68% 3% Create thread`
125			`0.71 0.00 3.35 0.84 59% 59% Yield thread [all suspended]`
126			`0.65 0.00 5.03 0.84 64% 64% Suspend [suspended] thread`
127			`0.63 0.00 1.68 0.79 62% 62% Resume thread`
128			`0.76 0.00 1.68 0.83 54% 54% Set priority`
129			`0.39 0.00 1.68 0.60 76% 76% Get priority`
130			`1.34 0.00 6.70 0.67 73% 25% Kill [suspended] thread`
131			`0.68 0.00 1.68 0.81 59% 59% Yield [no other] thread`
132			`0.92 0.00 1.68 0.83 54% 45% Resume [suspended low prio] thread`
133			`0.63 0.00 1.68 0.79 62% 62% Resume [runnable low prio] thread`
134			`0.84 0.00 1.68 0.84 100% 50% Suspend [runnable] thread`
135			`0.73 0.00 1.68 0.82 56% 56% Yield [only low prio] thread`
136			`0.58 0.00 1.68 0.76 65% 65% Suspend [runnable->not runnable]`
137			`1.26 0.00 3.35 0.67 71% 26% Kill [runnable] thread`
138			`0.86 0.00 3.35 0.86 98% 50% Destroy [dead] thread`
139			`1.44 0.00 1.68 0.40 85% 14% Destroy [runnable] thread`
140			`4.45 3.35 6.70 0.89 53% 40% Resume [high priority] thread`
141			`1.62 0.00 1.68 0.10 96% 3% Thread switch`
142
143			`0.41 0.00 1.68 0.61 75% 75% Scheduler lock`
144			`0.48 0.00 1.68 0.69 71% 71% Scheduler unlock [0 threads]`
145			`0.59 0.00 1.68 0.76 64% 64% Scheduler unlock [1 suspended]`
146			`0.45 0.00 1.68 0.65 73% 73% Scheduler unlock [many suspended]`
147			`0.45 0.00 1.68 0.65 73% 73% Scheduler unlock [many low prio]`
148
149			`0.52 0.00 1.68 0.72 68% 68% Init mutex`
150			`0.79 0.00 5.03 0.93 96% 59% Lock [unlocked] mutex`
151			`0.84 0.00 5.03 0.94 96% 56% Unlock [locked] mutex`
152			`0.63 0.00 1.68 0.79 62% 62% Trylock [unlocked] mutex`
153			`0.52 0.00 1.68 0.72 68% 68% Trylock [locked] mutex`
154			`0.58 0.00 1.68 0.76 65% 65% Destroy mutex`
155			`3.40 3.35 5.03 0.10 96% 96% Unlock/Lock mutex`
156
157			`0.99 0.00 1.68 0.81 59% 40% Create mbox`
158			`0.47 0.00 1.68 0.68 71% 71% Peek [empty] mbox`
159			`0.79 0.00 5.03 0.93 96% 59% Put [first] mbox`
160			`0.42 0.00 1.68 0.63 75% 75% Peek [1 msg] mbox`
161			`0.79 0.00 1.68 0.83 53% 53% Put [second] mbox`
162			`0.37 0.00 1.68 0.57 78% 78% Peek [2 msgs] mbox`
163			`0.73 0.00 3.35 0.87 59% 59% Get [first] mbox`
164			`0.73 0.00 1.68 0.82 56% 56% Get [second] mbox`
165			`0.79 0.00 3.35 0.88 56% 56% Tryput [first] mbox`
166			`0.68 0.00 3.35 0.85 62% 62% Peek item [non-empty] mbox`
167			`0.73 0.00 3.35 0.87 59% 59% Tryget [non-empty] mbox`
168			`0.63 0.00 1.68 0.79 62% 62% Peek item [empty] mbox`
169			`0.68 0.00 1.68 0.81 59% 59% Tryget [empty] mbox`
170			`0.26 0.00 1.68 0.44 84% 84% Waiting to get mbox`
171			`0.63 0.00 1.68 0.79 62% 62% Waiting to put mbox`
172			`0.73 0.00 3.35 0.87 59% 59% Delete mbox`
173			`3.25 1.68 3.35 0.20 93% 6% Put/Get mbox`
174
175			`0.63 0.00 1.68 0.79 62% 62% Init semaphore`
176			`0.63 0.00 1.68 0.79 62% 62% Post [0] semaphore`
177			`0.63 0.00 1.68 0.79 62% 62% Wait [1] semaphore`
178			`0.52 0.00 1.68 0.72 68% 68% Trywait [0] semaphore`
179			`0.52 0.00 1.68 0.72 68% 68% Trywait [1] semaphore`
180			`0.52 0.00 1.68 0.72 68% 68% Peek semaphore`
181			`0.21 0.00 1.68 0.37 87% 87% Destroy semaphore`
182			`3.30 1.68 3.35 0.10 96% 3% Post/Wait semaphore`
183
184			`0.79 0.00 3.35 0.88 56% 56% Create counter`
185			`0.42 0.00 1.68 0.63 75% 75% Get counter value`
186			`0.37 0.00 1.68 0.57 78% 78% Set counter value`
187			`0.73 0.00 1.68 0.82 56% 56% Tick counter`
188			`0.63 0.00 1.68 0.79 62% 62% Delete counter`
189
190			`0.89 0.00 3.35 0.89 96% 50% Create alarm`
191			`0.84 0.00 1.68 0.84 100% 50% Initialize alarm`
192			`0.52 0.00 1.68 0.72 68% 68% Disable alarm`
193			`0.89 0.00 3.35 0.89 96% 50% Enable alarm`
194			`0.58 0.00 1.68 0.76 65% 65% Delete alarm`
195			`0.63 0.00 1.68 0.79 62% 62% Tick counter [1 alarm]`
196			`5.03 3.35 6.70 0.10 93% 3% Tick counter [many alarms]`
197			`0.94 0.00 1.68 0.82 56% 43% Tick & fire counter [1 alarm]`
198			`11.16 10.06 11.73 0.76 65% 34% Tick & fire counters [>1 together]`
199			`5.19 5.03 6.70 0.28 90% 90% Tick & fire counters [>1 separately]`
200			`0.01 0.00 1.68 0.03 99% 99% Alarm latency [0 threads]`
201			`0.13 0.00 1.68 0.24 92% 92% Alarm latency [2 threads]`
202			`0.94 0.00 3.35 0.85 53% 45% Alarm latency [many threads]`
203			`1.75 1.68 6.70 0.15 96% 96% Alarm -> thread resume latency`
204
205			`41 0 368 (main stack: 1036) Thread stack used (1712 total)`
206			`All done, main stack : stack used 1036 size 2912`
207			`All done : Interrupt stack used 368 size 4108`
208			`All done : Idlethread stack used 288 size 2048`
209
210			`Timing complete - 28520 ms total`
211
212			`PASS:<Basic timing OK>`
213			`EXIT:<done> </PRE`
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238			`><TD`
239			`WIDTH="34%"`
240			`ALIGN="center"`
241			`VALIGN="top"`
242			`><A`
243			`HREF="ecos-user-guide.html"`
244			`ACCESSKEY="H"`
245			`>Home</A`
246			`></TD`
247			`><TD`
248			`WIDTH="33%"`
249			`ALIGN="right"`
250			`VALIGN="top"`
251			`><A`
252			`HREF="rt-v850-cebsa1.html"`
253			`ACCESSKEY="N"`
254			`>Next</A`
255			`></TD`
256			`></TR`
257			`><TR`
258			`><TD`
259			`WIDTH="33%"`
260			`ALIGN="left"`
261			`VALIGN="top"`
262			`>Board: Hitachi Solution Engine 7751 SH4 (se7751)</TD`
263			`><TD`
264			`WIDTH="34%"`
265			`ALIGN="center"`
266			`VALIGN="top"`
267			`><A`
268			`HREF="real-time-characterization.html"`
269			`ACCESSKEY="U"`
270			`>Up</A`
271			`></TD`
272			`><TD`
273			`WIDTH="33%"`
274			`ALIGN="right"`
275			`VALIGN="top"`
276			`>Board: NEC V850 Cosmo Evaluation Board</TD`
277			`></TR`
278			`></TABLE`
279			`></DIV`
280			`></BODY`
281			`></HTML`
282			`>`