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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: Toshiba REF 4955</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 JMR3904 Evaluation Board" HREF="rt-tx39-jmr3904.html"><LINK REL="NEXT" TITLE="Board: Matsushita STDEVAL1 Board" HREF="rt-mn10300-stdeval1.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-tx39-jmr3904.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-mn10300-stdeval1.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="RT-TX49-REF4955">Board: Toshiba REF 4955</H1 ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="LITERALLAYOUT" > Board: Toshiba REF 4955 CPU : Toshiba TX4955 66MHz Startup, main stack : stack used 960 size 2936 Startup : Interrupt stack used 168 size 4096 Startup : Idlethread stack used 372 size 2048 eCos Kernel Timings Notes: all times are in microseconds (.000001) unless otherwise stated Reading the hardware clock takes 3 `ticks' overhead ... this value will be factored out of all other measurements Clock interrupt took 4.00 microseconds (264 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 ====== ====== ====== ====== ========== ======== 11.21 9.58 14.11 0.95 48% 34% Create thread 0.66 0.65 1.29 0.02 98% 98% Yield thread [all suspended] 0.63 0.53 3.06 0.17 82% 82% Suspend [suspended] thread 0.54 0.53 1.06 0.02 98% 98% Resume thread 0.78 0.74 1.39 0.05 93% 93% Set priority 0.05 0.05 0.36 0.01 98% 98% Get priority 2.06 1.89 6.65 0.25 95% 79% Kill [suspended] thread 0.65 0.65 0.68 0.00 98% 98% Yield [no other] thread 1.15 1.02 3.03 0.20 81% 81% Resume [suspended low prio] thread 0.54 0.52 1.18 0.03 96% 96% Resume [runnable low prio] thread 0.94 0.88 1.27 0.01 95% 1% Suspend [runnable] thread 0.65 0.65 0.68 0.00 98% 98% Yield [only low prio] thread 0.54 0.53 0.86 0.01 98% 96% Suspend [runnable->not runnable] 1.97 1.89 2.98 0.12 84% 84% Kill [runnable] thread 1.03 0.92 4.94 0.17 89% 89% Destroy [dead] thread 2.55 2.33 4.38 0.24 89% 70% Destroy [runnable] thread 5.62 4.11 13.23 0.99 65% 40% Resume [high priority] thread 1.84 1.83 2.79 0.02 98% 98% Thread switch 0.12 0.02 0.65 0.15 74% 74% Scheduler lock 0.35 0.35 0.35 0.00 100% 100% Scheduler unlock [0 threads] 0.35 0.35 0.35 0.00 100% 100% Scheduler unlock [1 suspended] 0.43 0.35 1.17 0.13 78% 78% Scheduler unlock [many suspended] 0.45 0.35 1.17 0.15 75% 75% Scheduler unlock [many low prio] 0.46 0.15 3.38 0.30 62% 50% Init mutex 0.73 0.64 3.27 0.16 96% 96% Lock [unlocked] mutex 0.77 0.65 4.50 0.23 96% 96% Unlock [locked] mutex 0.58 0.55 1.42 0.05 96% 96% Trylock [unlocked] mutex 0.51 0.50 0.83 0.02 96% 96% Trylock [locked] mutex 0.12 0.11 0.41 0.02 96% 96% Destroy mutex 4.72 4.70 5.58 0.05 96% 96% Unlock/Lock mutex 1.01 0.67 3.48 0.40 71% 71% Create mbox 0.02 0.00 0.53 0.03 96% 96% Peek [empty] mbox 0.89 0.68 4.20 0.29 96% 71% Put [first] mbox 0.02 0.00 0.33 0.02 96% 96% Peek [1 msg] mbox 0.69 0.68 0.76 0.01 50% 46% Put [second] mbox 0.02 0.00 0.30 0.02 96% 96% Peek [2 msgs] mbox 0.81 0.71 3.83 0.19 96% 96% Get [first] mbox 0.72 0.71 1.02 0.02 96% 96% Get [second] mbox 0.81 0.65 2.74 0.22 96% 71% Tryput [first] mbox 0.67 0.62 2.27 0.10 96% 96% Peek item [non-empty] mbox 0.77 0.71 2.41 0.10 96% 96% Tryget [non-empty] mbox 0.59 0.58 0.88 0.02 96% 96% Peek item [empty] mbox 0.62 0.62 0.67 0.00 96% 96% Tryget [empty] mbox 0.03 0.02 0.32 0.02 96% 96% Waiting to get mbox 0.02 0.02 0.06 0.01 50% 46% Waiting to put mbox 0.75 0.65 3.59 0.18 96% 96% Delete mbox 2.80 2.77 3.59 0.05 96% 96% Put/Get mbox 0.37 0.18 0.88 0.28 71% 71% Init semaphore 0.48 0.47 0.80 0.02 96% 96% Post [0] semaphore 0.60 0.59 0.67 0.01 50% 46% Wait [1] semaphore 0.53 0.50 1.41 0.06 96% 96% Trywait [0] semaphore 0.51 0.50 0.71 0.01 96% 50% Trywait [1] semaphore 0.09 0.09 0.15 0.00 96% 96% Peek semaphore 0.12 0.11 0.41 0.02 96% 96% Destroy semaphore 3.05 3.05 3.05 0.00 100% 100% Post/Wait semaphore 0.57 0.17 2.76 0.24 59% 25% Create counter 0.06 0.05 0.58 0.03 96% 96% Get counter value 0.06 0.03 0.64 0.04 96% 96% Set counter value 0.73 0.71 1.02 0.02 96% 96% Tick counter 0.12 0.11 0.15 0.01 50% 46% Delete counter 0.89 0.64 3.15 0.34 84% 71% Create alarm 1.00 0.95 2.41 0.09 96% 96% Initialize alarm 0.09 0.06 0.68 0.04 96% 96% Disable alarm 1.05 1.00 2.48 0.09 96% 96% Enable alarm 0.18 0.17 0.50 0.02 96% 96% Delete alarm 0.90 0.89 1.11 0.01 96% 96% Tick counter [1 alarm] 5.60 5.59 5.88 0.02 96% 96% Tick counter [many alarms] 1.53 1.52 2.11 0.04 96% 96% Tick & fire counter [1 alarm] 25.48 25.47 25.76 0.02 96% 96% Tick & fire counters [>1 together] 6.22 6.21 6.44 0.01 96% 96% Tick & fire counters [>1 separately] 2.59 2.56 6.17 0.07 98% 98% Alarm latency [0 threads] 4.06 3.95 6.24 0.08 78% 57% Alarm latency [2 threads] 5.03 2.56 9.03 0.89 59% 10% Alarm latency [many threads] 5.68 5.59 15.45 0.15 99% 99% Alarm -> thread resume latency 2.52 1.41 8.12 0.00 Clock/interrupt latency 2.05 1.17 6.00 0.00 Clock DSR latency 34 0 1072 (main stack: 1320) Thread stack used (1912 total) All done, main stack : stack used 1320 size 2936 All done : Interrupt stack used 136 size 4096 All done : Idlethread stack used 996 size 2048 Timing complete - 30360 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-tx39-jmr3904.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-mn10300-stdeval1.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Board: Toshiba JMR3904 Evaluation Board</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: Matsushita STDEVAL1 Board</TD ></TR ></TABLE ></DIV ></BODY ></HTML >