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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: Matsushita STDEVAL1 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: Toshiba REF 4955" HREF="rt-tx49-ref4955.html"><LINK REL="NEXT" TITLE="Board: Fujitsu SPARClite Evaluation Board" HREF="rt-sparclite-sleb.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-tx49-ref4955.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-sparclite-sleb.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="RT-MN10300-STDEVAL1">Board: Matsushita STDEVAL1 Board</H1 ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="LITERALLAYOUT" > Board: Matsushita STDEVAL1 Board CPU : MN103002A 60MHz eCOS Kernel Timings Note: all times are in microseconds (.000001) unless otherwise stated Reading the hardware clock takes 18 'ticks' overhead ... this value will be factored out of all other measurements Clock interrupt took 13.73 microseconds (205 raw clock ticks) Testing parameters: Clock samples: 32 Threads: 24 Thread switches: 128 Mutexes: 32 Mailboxes: 32 Semaphores: 32 Scheduler operations: 128 Counters: 32 Alarms: 32 Confidence Ave Min Max Var Ave Min Function ====== ====== ====== ====== ========== ======== 14.36 11.53 23.53 1.81 54% 33% Create thread 2.64 2.53 5.07 0.20 95% 95% Yield thread [all suspended] 2.25 1.93 4.80 0.31 45% 83% Suspend [suspended] thread 2.19 2.00 4.93 0.28 91% 91% Resume thread 3.42 3.00 8.40 0.47 95% 87% Set priority 0.31 0.13 1.20 0.19 79% 58% Get priority 8.26 7.40 18.80 0.93 95% 87% Kill [suspended] thread 2.58 2.47 5.13 0.21 95% 95% Yield [no other] thread 5.07 4.53 8.67 0.44 62% 50% Resume [suspended low prio] thread 2.27 2.07 4.53 0.23 87% 87% Resume [runnable low prio] thread 4.76 4.07 9.40 0.65 66% 75% Suspend [runnable] thread 2.63 2.53 4.73 0.18 95% 95% Yield [only low prio] thread 2.09 1.87 4.27 0.27 91% 79% Suspend [runnable->not runnable] 10.79 10.00 18.20 0.81 95% 79% Kill [runnable] thread 20.30 18.40 28.80 1.42 79% 54% Resume [high priority] thread 5.53 5.47 12.13 0.11 98% 97% Thread switch 0.28 0.27 2.20 0.03 97% 97% Scheduler lock 1.14 1.13 2.00 0.01 99% 99% Scheduler unlock [0 threads] 1.14 1.13 2.40 0.02 99% 99% Scheduler unlock [1 suspended] 1.16 1.13 3.33 0.06 95% 95% Scheduler unlock [many suspended] 1.23 1.20 3.13 0.05 95% 95% Scheduler unlock [many low prio] 1.29 1.00 4.20 0.25 65% 50% Init mutex 2.65 2.47 5.27 0.23 93% 87% Lock [unlocked] mutex 3.26 3.07 6.80 0.28 93% 87% Unlock [locked] mutex 2.48 2.33 5.07 0.21 90% 87% Trylock [unlocked] mutex 2.20 2.07 4.67 0.21 93% 87% Trylock [locked] mutex 0.23 0.20 1.00 0.05 96% 93% Destroy mutex 25.11 24.73 27.53 0.21 65% 31% Unlock/Lock mutex 2.49 2.00 5.73 0.32 81% 37% Create mbox 0.11 0.00 1.60 0.15 84% 81% Peek [empty] mbox 3.01 2.60 9.47 0.52 96% 78% Put [first] mbox 0.10 0.00 1.67 0.15 87% 81% Peek [1 msg] mbox 3.09 2.60 8.33 0.50 93% 75% Put [second] mbox 0.06 0.00 1.13 0.08 96% 87% Peek [2 msgs] mbox 3.10 2.80 7.93 0.40 93% 84% Get [first] mbox 3.13 2.80 7.53 0.43 90% 78% Get [second] mbox 2.99 2.60 8.53 0.52 93% 75% Tryput [first] mbox 2.65 2.33 6.80 0.42 90% 78% Peek item [non-empty] mbox 3.05 2.73 7.60 0.42 93% 78% Tryget [non-empty] mbox 3.16 2.93 6.27 0.31 84% 84% Peek item [empty] mbox 2.48 2.27 5.73 0.30 84% 84% Tryget [empty] mbox 0.23 0.13 2.07 0.14 96% 87% Waiting to get mbox 0.22 0.13 1.93 0.13 96% 75% Waiting to put mbox 3.08 2.80 7.93 0.42 84% 84% Delete mbox 16.01 15.53 19.00 0.52 78% 59% Put/Get mbox 0.85 0.67 3.27 0.19 96% 50% Init semaphore 2.00 1.93 3.87 0.12 96% 90% Post [0] semaphore 2.05 2.00 3.47 0.09 96% 96% Wait [1] semaphore 1.85 1.80 3.47 0.10 96% 96% Trywait [0] semaphore 1.82 1.80 2.53 0.04 96% 96% Trywait [1] semaphore 0.36 0.33 1.33 0.06 96% 96% Peek semaphore 0.38 0.33 1.87 0.09 96% 96% Destroy semaphore 12.38 12.20 16.27 0.30 93% 87% Post/Wait semaphore 1.18 0.73 4.07 0.24 78% 18% Create counter 0.20 0.13 1.40 0.11 87% 87% Get counter value 0.24 0.20 1.40 0.08 93% 93% Set counter value 3.17 3.13 4.20 0.07 93% 93% Tick counter 0.44 0.40 1.73 0.08 96% 96% Delete counter 2.24 1.67 5.13 0.47 68% 65% Create alarm 3.86 3.40 9.67 0.51 90% 78% Initialize alarm 0.15 0.07 1.60 0.12 96% 68% Disable alarm 3.76 3.47 7.67 0.35 93% 75% Enable alarm 0.57 0.47 2.73 0.16 96% 84% Delete alarm 3.64 3.60 4.73 0.07 96% 96% Tick counter [1 alarm] 21.72 21.67 23.27 0.10 96% 96% Tick counter [many alarms] 6.13 6.07 8.07 0.12 96% 96% Tick & fire counter [1 alarm] 101.40 99.53 132.73 2.75 93% 93% Tick & fire counters [>1 together] 24.21 24.13 26.40 0.14 96% 96% Tick & fire counters [>1 separately] 11.74 11.60 22.67 0.26 98% 98% Alarm latency [0 threads] 14.58 11.73 24.93 1.59 54% 28% Alarm latency [2 threads] 18.18 15.20 41.07 1.96 60% 43% Alarm latency [many threads] 3.06 2.13 10.33 0.00 Clock/interrupt latency Timing complete - 23480 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-tx49-ref4955.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-sparclite-sleb.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Board: Toshiba REF 4955</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: Fujitsu SPARClite Evaluation Board</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
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