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<!-- Copyright (C) 2003 Red Hat, Inc. --> <!-- This material may be distributed only subject to the terms --> <!-- and conditions set forth in the Open Publication License, v1.0 --> <!-- or later (the latest version is presently available at --> <!-- http://www.opencontent.org/openpub/). --> <!-- Distribution of the work or derivative of the work in any --> <!-- standard (paper) book form is prohibited unless prior --> <!-- permission is obtained from the copyright holder. --> <HTML ><HEAD ><TITLE >Board: Intel StrongARM EBSA-285 Evaluation Board</TITLE ><meta name="MSSmartTagsPreventParsing" content="TRUE"> <META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+ "><LINK REL="HOME" TITLE="eCos User Guide" HREF="ecos-user-guide.html"><LINK REL="UP" TITLE="Real-time characterization" HREF="real-time-characterization.html"><LINK REL="PREVIOUS" TITLE="Board: Atmel AT91/EB40" HREF="rt-at91-eb40.html"><LINK REL="NEXT" TITLE="Board: Cirrus Logic EDB7111-2 Development Board" HREF="rt-arm-ep7211.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >eCos User Guide</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="rt-at91-eb40.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Appendix B. Real-time characterization</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="rt-arm-ep7211.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="RT-ARM-EBSA285">Board: Intel StrongARM EBSA-285 Evaluation Board</H1 ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="LITERALLAYOUT" >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->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 & fire counter [1 alarm] 19.88 19.84 20.11 0.07 84% 84% Tick & fire counters [>1 together] 4.37 4.35 4.62 0.05 90% 90% Tick & fire counters [>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 -> 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:<Basic timing OK> EXIT:<done> </PRE ></TD ></TR ></TABLE ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="rt-at91-eb40.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ecos-user-guide.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="rt-arm-ep7211.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Board: Atmel AT91/EB40</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="real-time-characterization.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Board: Cirrus Logic EDB7111-2 Development Board</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
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