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+>Real-time characterization</TITLE
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+TITLE="i386/Linux Synthetic Target Setup"
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+TITLE="Board: Atmel AT91/EB40"
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+>eCos User Guide</TH
+></TR
+><TR
+><TD
+WIDTH="10%"
+ALIGN="left"
+VALIGN="bottom"
+><A
+HREF="setup-synth-i386linux.html"
+ACCESSKEY="P"
+>Prev</A
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+>Next</A
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+><HR
+ALIGN="LEFT"
+WIDTH="100%"></DIV
+><DIV
+CLASS="APPENDIX"
+><H1
+><A
+NAME="REAL-TIME-CHARACTERIZATION">Appendix B. Real-time characterization</H1
+><DIV
+CLASS="TOC"
+><DL
+><DT
+><B
+>Table of Contents</B
+></DT
+><DT
+><A
+HREF="real-time-characterization.html#RT-ARM-AEB1"
+>Board: ARM AEB-1 Revision B Evaluation Board</A
+></DT
+><DT
+><A
+HREF="rt-at91-eb40.html"
+>Board: Atmel AT91/EB40</A
+></DT
+><DT
+><A
+HREF="rt-arm-ebsa285.html"
+>Board: Intel StrongARM EBSA-285 Evaluation Board</A
+></DT
+><DT
+><A
+HREF="rt-arm-ep7211.html"
+>Board: Cirrus Logic EDB7111-2 Development Board</A
+></DT
+><DT
+><A
+HREF="rt-arm-pid.html"
+>Board: ARM PID Evaluation Board</A
+></DT
+><DT
+><A
+HREF="rt-arm-iq80310.html"
+>Board: Intel IQ80310 XScale Development Kit</A
+></DT
+><DT
+><A
+HREF="rt-tx39-jmr3904.html"
+>Board: Toshiba JMR3904 Evaluation Board</A
+></DT
+><DT
+><A
+HREF="rt-tx49-ref4955.html"
+>Board: Toshiba REF 4955</A
+></DT
+><DT
+><A
+HREF="rt-mn10300-stdeval1.html"
+>Board: Matsushita STDEVAL1 Board</A
+></DT
+><DT
+><A
+HREF="rt-sparclite-sleb.html"
+>Board: Fujitsu SPARClite Evaluation Board</A
+></DT
+><DT
+><A
+HREF="rt-ppc-cogent.html"
+>Board: Cogent CMA MPC860 (PowerPC) Evaluation</A
+></DT
+><DT
+><A
+HREF="rt-vr4300-vrc4373.html"
+>Board: NEC VR4373</A
+></DT
+><DT
+><A
+HREF="rt-arm-assabet.html"
+>Board: Intel SA1110 (Assabet)</A
+></DT
+><DT
+><A
+HREF="rt-arm-brutus.html"
+>Board: Intel SA1100 (Brutus)</A
+></DT
+><DT
+><A
+HREF="rt-ppc-mbx860.html"
+>Board: Motorola MBX</A
+></DT
+><DT
+><A
+HREF="rt-sh-edk7708.html"
+>Board: Hitachi EDK7708</A
+></DT
+><DT
+><A
+HREF="rt-sh-cq7708.html"
+>Board: CQ CqREEK SH3 Evaluation Board (cq7708)</A
+></DT
+><DT
+><A
+HREF="rt-sh-hs7729pci.html"
+>Board: Hitachi HS7729PCI HS7729 SH3</A
+></DT
+><DT
+><A
+HREF="rt-sh-se7751.html"
+>Board: Hitachi Solution Engine 7751 SH4 (se7751)</A
+></DT
+><DT
+><A
+HREF="rt-i386-pc.html"
+>Board: PC</A
+></DT
+><DT
+><A
+HREF="rt-v850-cebsa1.html"
+>Board: NEC V850 Cosmo Evaluation Board</A
+></DT
+><DT
+><A
+HREF="rt-v850-cebsb1.html"
+>Board: NEC V850 Cosmo Evaluation Board</A
+></DT
+></DL
+></DIV
+><P
+>For a discussion of real-time performance measurement for eCos, see the eCos
+Users' Guide.</P
+><DIV
+CLASS="CAUTION"
+><P
+></P
+><TABLE
+CLASS="CAUTION"
+BORDER="1"
+WIDTH="100%"
+><TR
+><TD
+ALIGN="CENTER"
+><B
+>Caution</B
+></TD
+></TR
+><TR
+><TD
+ALIGN="LEFT"
+><P
+>As with the target setup descriptions in the previous appendix, this
+information will eventually be merged into per-target documents.</P
+></TD
+></TR
+></TABLE
+></DIV
+><P
+> Sample numbers:
+ </P
+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="RT-ARM-AEB1">Board: ARM AEB-1 Revision B Evaluation Board</H1
+><TABLE
+BORDER="5"
+BGCOLOR="#E0E0F0"
+WIDTH="70%"
+><TR
+><TD
+><PRE
+CLASS="LITERALLAYOUT"
+> Board: ARM AEB-1 Revision B Evaluation Board
+
+CPU : Sharp LH77790A 24MHz
+
+
+
+Startup, main stack : stack used 404 size 2400
+Startup : Interrupt stack used 128 size 2048
+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 13 'ticks' overhead
+... this value will be factored out of all other measurements
+Clock interrupt took 193.49 microseconds (290 raw clock ticks)
+
+Testing parameters:
+ Clock samples: 32
+ Threads: 7
+ Thread switches: 128
+ Mutexes: 32
+ Mailboxes: 32
+ Semaphores: 32
+ Scheduler operations: 128
+ Counters: 32
+ Alarms: 32
+
+
+ Confidence
+ Ave Min Max Var Ave Min Function
+ ====== ====== ====== ====== ========== ========
+ 110.19 104.67 116.00 3.26 42% 28% Create thread
+ 34.00 34.00 34.00 0.00 100% 100% Yield thread [all suspended]
+ 24.67 24.67 24.67 0.00 100% 100% Suspend [suspended] thread
+ 25.05 24.67 25.33 0.33 57% 42% Resume thread
+ 37.14 36.67 37.33 0.27 71% 28% Set priority
+ 3.81 3.33 4.00 0.27 71% 28% Get priority
+ 80.00 80.00 80.00 0.00 100% 100% Kill [suspended] thread
+ 33.90 33.33 34.00 0.16 85% 14% Yield [no other] thread
+ 45.90 44.00 46.67 0.54 57% 14% Resume [suspended low prio] thread
+ 24.57 24.00 24.67 0.16 85% 14% Resume [runnable low prio] thread
+ 42.29 36.67 43.33 1.61 85% 14% Suspend [runnable] thread
+ 33.90 33.33 34.00 0.16 85% 14% Yield [only low prio] thread
+ 24.67 24.67 24.67 0.00 100% 100% Suspend [runnable->not runnable]
+ 80.00 80.00 80.00 0.00 100% 100% Kill [runnable] thread
+ 43.33 43.33 43.33 0.00 100% 100% Destroy [dead] thread
+ 106.29 101.33 107.33 1.41 85% 14% Destroy [runnable] thread
+ 144.95 141.33 166.00 6.01 85% 85% Resume [high priority] thread
+ 78.31 76.67 254.67 2.75 99% 99% Thread switch
+
+ 4.00 4.00 4.00 0.00 100% 100% Scheduler lock
+ 16.37 16.00 16.67 0.33 56% 43% Scheduler unlock [0 threads]
+ 16.37 16.00 16.67 0.33 56% 43% Scheduler unlock [1 suspended]
+ 16.37 16.00 16.67 0.33 56% 43% Scheduler unlock [many suspended]
+ 16.37 16.00 16.67 0.33 56% 43% Scheduler unlock [many low prio]
+
+ 10.67 10.67 10.67 0.00 100% 100% Init mutex
+ 28.67 28.67 28.67 0.00 100% 100% Lock [unlocked] mutex
+ 30.44 30.00 31.33 0.33 59% 37% Unlock [locked] mutex
+ 25.42 25.33 26.00 0.15 87% 87% Trylock [unlocked] mutex
+ 22.50 22.00 22.67 0.25 75% 25% Trylock [locked] mutex
+ 5.75 5.33 6.00 0.31 62% 37% Destroy mutex
+ 185.33 185.33 185.33 0.00 100% 100% Unlock/Lock mutex
+
+ 20.17 20.00 20.67 0.25 75% 75% Create mbox
+ 2.92 2.67 3.33 0.31 62% 62% Peek [empty] mbox
+ 32.42 32.00 32.67 0.31 62% 37% Put [first] mbox
+ 3.00 2.67 3.33 0.33 100% 50% Peek [1 msg] mbox
+ 32.50 32.00 32.67 0.25 75% 25% Put [second] mbox
+ 2.92 2.67 3.33 0.31 62% 62% Peek [2 msgs] mbox
+ 32.83 32.67 33.33 0.25 75% 75% Get [first] mbox
+ 32.67 32.67 32.67 0.00 100% 100% Get [second] mbox
+ 31.33 31.33 31.33 0.00 100% 100% Tryput [first] mbox
+ 27.58 27.33 28.00 0.31 62% 62% Peek item [non-empty] mbox
+ 32.83 32.67 33.33 0.25 75% 75% Tryget [non-empty] mbox
+ 26.50 26.00 26.67 0.25 75% 25% Peek item [empty] mbox
+ 28.00 28.00 28.00 0.00 100% 100% Tryget [empty] mbox
+ 3.25 2.67 3.33 0.15 87% 12% Waiting to get mbox
+ 3.25 2.67 3.33 0.15 87% 12% Waiting to put mbox
+ 30.83 30.67 31.33 0.25 75% 75% Delete mbox
+ 101.08 100.67 101.33 0.31 62% 37% Put/Get mbox
+
+ 11.17 10.67 11.33 0.25 75% 25% Init semaphore
+ 24.17 24.00 24.67 0.25 75% 75% Post [0] semaphore
+ 27.08 26.67 27.33 0.31 62% 37% Wait [1] semaphore
+ 22.75 22.67 23.33 0.15 87% 87% Trywait [0] semaphore
+ 22.21 22.00 22.67 0.29 68% 68% Trywait [1] semaphore
+ 7.33 7.33 7.33 0.00 100% 100% Peek semaphore
+ 5.92 5.33 6.00 0.15 87% 12% Destroy semaphore
+ 110.04 110.00 110.67 0.08 93% 93% Post/Wait semaphore
+
+ 9.54 9.33 10.00 0.29 68% 68% Create counter
+ 3.92 3.33 4.00 0.15 87% 12% Get counter value
+ 4.00 4.00 4.00 0.00 100% 100% Set counter value
+ 30.92 30.67 31.33 0.31 62% 62% Tick counter
+ 5.75 5.33 6.00 0.31 62% 37% Delete counter
+
+ 13.83 13.33 14.00 0.25 75% 25% Create alarm
+ 46.67 46.67 46.67 0.00 100% 100% Initialize alarm
+ 3.67 3.33 4.00 0.33 100% 50% Disable alarm
+ 45.67 45.33 46.00 0.33 100% 50% Enable alarm
+ 8.33 8.00 8.67 0.33 100% 50% Delete alarm
+ 36.33 36.00 36.67 0.33 100% 50% Tick counter [1 alarm]
+ 214.67 214.67 214.67 0.00 100% 100% Tick counter [many alarms]
+ 62.67 62.67 62.67 0.00 100% 100% Tick & fire counter [1 alarm]
+ 1087.04 1075.33 1278.67 21.91 93% 93% Tick & fire counters [>1 together]
+ 246.35 240.67 412.00 10.35 96% 96% Tick & fire counters [>1 separately]
+ 168.01 167.33 237.33 1.08 99% 99% Alarm latency [0 threads]
+ 187.36 168.00 234.67 3.60 86% 1% Alarm latency [2 threads]
+ 187.37 167.33 235.33 3.59 85% 1% Alarm latency [many threads]
+ 303.12 280.00 508.67 3.21 98% 0% Alarm -> thread resume latency
+
+ 36.65 36.00 38.67 0.00 Clock/interrupt latency
+
+ 65.79 52.00 152.67 0.00 Clock DSR latency
+
+ 316 316 316 (main stack: 752) Thread stack used (1120 total)
+All done, main stack : stack used 752 size 2400
+All done : Interrupt stack used 280 size 2048
+All done : Idlethread stack used 268 size 2048
+
+Timing complete - 30390 ms total
+
+PASS:<Basic timing OK>
+EXIT:<done>
+
+ </PRE
+></TD
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