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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: PC</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: Hitachi Solution Engine 7751 SH4 (se7751)" HREF="rt-sh-se7751.html"><LINK REL="NEXT" TITLE="Board: NEC V850 Cosmo Evaluation Board" HREF="rt-v850-cebsa1.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-sh-se7751.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-v850-cebsa1.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="RT-I386-PC">Board: PC</H1 ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="LITERALLAYOUT" >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->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 & fire counter [1 alarm] 11.16 10.06 11.73 0.76 65% 34% Tick & fire counters [>1 together] 5.19 5.03 6.70 0.28 90% 90% Tick & fire counters [>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 -> 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:<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-sh-se7751.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-v850-cebsa1.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Board: Hitachi Solution Engine 7751 SH4 (se7751)</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: NEC V850 Cosmo Evaluation Board</TD ></TR ></TABLE ></DIV ></BODY ></HTML >
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