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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: NEC V850 Cosmo 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: NEC V850 Cosmo Evaluation Board" HREF="rt-v850-cebsa1.html"><LINK REL="NEXT" TITLE="GNU General Public License" HREF="gnu-general-public-license.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-v850-cebsa1.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="gnu-general-public-license.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="RT-V850-CEBSB1">Board: NEC V850 Cosmo Evaluation Board</H1 ><TABLE BORDER="5" BGCOLOR="#E0E0F0" WIDTH="70%" ><TR ><TD ><PRE CLASS="LITERALLAYOUT" >Board: NEC V850 Cosmo Evaluation Board CPU: NEC CEB-V850/SB1 16MHz (in internal Flash) Startup, main stack : stack used 572 size 2936 Startup : Interrupt stack used 132 size 4096 Startup : Idlethread stack used 210 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 118.15 microseconds (472 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 ====== ====== ====== ====== ========== ======== 113.68 111.00 116.50 1.63 42% 28% Create thread 30.00 30.00 30.00 0.00 100% 100% Yield thread [all suspended] 29.57 29.50 29.75 0.10 71% 71% Suspend [suspended] thread 27.43 27.25 27.50 0.10 71% 28% Resume thread 34.11 34.00 34.25 0.12 57% 57% Set priority 1.57 1.50 1.75 0.10 71% 71% Get priority 72.96 72.75 73.00 0.06 85% 14% Kill [suspended] thread 30.00 30.00 30.00 0.00 100% 100% Yield [no other] thread 42.75 42.75 42.75 0.00 100% 100% Resume [suspended low prio] thread 27.00 27.00 27.00 0.00 100% 100% Resume [runnable low prio] thread 43.64 41.25 44.25 0.68 85% 14% Suspend [runnable] thread 30.00 30.00 30.00 0.00 100% 100% Yield [only low prio] thread 29.57 29.50 29.75 0.10 71% 71% Suspend [runnable->not runnable] 72.93 72.75 73.00 0.10 71% 28% Kill [runnable] thread 44.89 44.75 45.75 0.24 85% 85% Destroy [dead] thread 103.00 101.50 103.25 0.43 85% 14% Destroy [runnable] thread 175.21 171.50 197.50 6.37 85% 85% Resume [high priority] thread 84.11 79.50 197.25 1.77 98% 0% Thread switch 1.00 1.00 1.00 0.00 100% 100% Scheduler lock 20.06 20.00 20.25 0.09 75% 75% Scheduler unlock [0 threads] 20.00 20.00 20.00 0.00 100% 100% Scheduler unlock [1 suspended] 20.06 20.00 20.25 0.09 75% 75% Scheduler unlock [many suspended] 20.06 20.00 20.25 0.09 75% 75% Scheduler unlock [many low prio] 4.00 4.00 4.00 0.00 100% 100% Init mutex 33.00 33.00 33.00 0.00 100% 100% Lock [unlocked] mutex 36.77 36.75 37.25 0.03 96% 96% Unlock [locked] mutex 28.13 28.00 28.25 0.13 100% 50% Trylock [unlocked] mutex 25.13 25.00 25.25 0.13 100% 50% Trylock [locked] mutex 4.88 4.75 5.00 0.13 100% 50% Destroy mutex 187.00 187.00 187.00 0.00 100% 100% Unlock/Lock mutex 10.00 10.00 10.00 0.00 100% 100% Create mbox 0.69 0.50 0.75 0.09 75% 25% Peek [empty] mbox 34.75 34.75 34.75 0.00 100% 100% Put [first] mbox 0.69 0.50 0.75 0.09 75% 25% Peek [1 msg] mbox 35.00 35.00 35.00 0.00 100% 100% Put [second] mbox 0.69 0.50 0.75 0.09 75% 25% Peek [2 msgs] mbox 36.00 36.00 36.00 0.00 100% 100% Get [first] mbox 36.00 36.00 36.00 0.00 100% 100% Get [second] mbox 31.00 31.00 31.00 0.00 100% 100% Tryput [first] mbox 29.50 29.50 29.50 0.00 100% 100% Peek item [non-empty] mbox 35.25 35.25 35.25 0.00 100% 100% Tryget [non-empty] mbox 27.69 27.50 27.75 0.09 75% 25% Peek item [empty] mbox 31.06 31.00 31.25 0.09 75% 75% Tryget [empty] mbox 0.94 0.75 1.00 0.09 75% 25% Waiting to get mbox 0.94 0.75 1.00 0.09 75% 25% Waiting to put mbox 37.81 37.75 38.00 0.09 75% 75% Delete mbox 112.00 112.00 112.00 0.00 100% 100% Put/Get mbox 3.19 3.00 3.25 0.09 75% 25% Init semaphore 25.38 25.25 25.50 0.13 100% 50% Post [0] semaphore 32.63 32.50 32.75 0.13 100% 50% Wait [1] semaphore 24.25 24.25 24.25 0.00 100% 100% Trywait [0] semaphore 25.00 25.00 25.00 0.00 100% 100% Trywait [1] semaphore 4.00 4.00 4.00 0.00 100% 100% Peek semaphore 4.88 4.75 5.00 0.13 100% 50% Destroy semaphore 124.50 124.50 124.50 0.00 100% 100% Post/Wait semaphore 6.50 6.50 6.50 0.00 100% 100% Create counter 1.25 1.25 1.25 0.00 100% 100% Get counter value 1.44 1.25 1.50 0.09 75% 25% Set counter value 36.25 36.25 36.25 0.00 100% 100% Tick counter 5.25 5.25 5.25 0.00 100% 100% Delete counter 12.25 12.25 12.25 0.00 100% 100% Create alarm 49.13 49.00 49.25 0.13 100% 50% Initialize alarm 2.81 2.75 3.00 0.09 75% 75% Disable alarm 48.50 48.50 48.50 0.00 100% 100% Enable alarm 8.25 8.25 8.25 0.00 100% 100% Delete alarm 46.50 46.50 46.50 0.00 100% 100% Tick counter [1 alarm] 485.42 482.25 580.00 5.91 96% 96% Tick counter [many alarms] 64.00 64.00 64.00 0.00 100% 100% Tick & fire counter [1 alarm] 1109.76 1100.50 1198.00 16.53 90% 90% Tick & fire counters [>1 together] 505.85 502.00 621.00 7.20 96% 96% Tick & fire counters [>1 separately] 96.26 95.75 161.25 1.02 99% 99% Alarm latency [0 threads] 159.20 95.75 160.75 2.52 97% 0% Alarm latency [2 threads] 159.73 110.50 161.75 1.53 97% 0% Alarm latency [many threads] 218.45 211.25 445.75 3.55 97% 1% Alarm -> thread resume latency 28.24 25.25 43.25 0.00 Clock/interrupt latency 60.15 40.50 221.50 0.00 Clock DSR latency 472 424 572 (main stack: 1052) Thread stack used (1912 total) All done, main stack : stack used 1052 size 2936 All done : Interrupt stack used 280 size 4096 All done : Idlethread stack used 516 size 2048 Timing complete - 30590 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-v850-cebsa1.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="gnu-general-public-license.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" 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