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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"><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="eCos User Guide"HREF="ecos-user-guide.html"><LINKREL="UP"TITLE="Real-time characterization"HREF="real-time-characterization.html"><LINKREL="PREVIOUS"TITLE="Board: PC"HREF="rt-i386-pc.html"><LINKREL="NEXT"TITLE="Board: NEC V850 Cosmo Evaluation Board"HREF="rt-v850-cebsb1.html"></HEAD><BODYCLASS="SECT1"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLESUMMARY="Header navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">eCos User Guide</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="rt-i386-pc.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Appendix B. Real-time characterization</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="rt-v850-cebsb1.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="RT-V850-CEBSA1">Board: NEC V850 Cosmo Evaluation Board</H1><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="LITERALLAYOUT">Board: NEC V850 Cosmo Evaluation BoardCPU: NEC CEB-V850/SA1 17MHzStartup, main stack : stack used 552 size 2936Startup : Interrupt stack used 120 size 4096Startup : Idlethread stack used 206 size 2048eCos Kernel TimingsNotes: all times are in microseconds (.000001) unless otherwise statedReading the hardware clock takes 27 `ticks' overhead... this value will be factored out of all other measurementsClock interrupt took 280.04 microseconds (1190 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 ====== ====== ====== ====== ========== ======== 288.71 280.24 297.18 4.84 42% 28% Create thread 70.76 70.59 70.82 0.10 71% 28% Yield thread [all suspended] 59.06 59.06 59.06 0.00 100% 100% Suspend [suspended] thread 60.00 60.00 60.00 0.00 100% 100% Resume thread 77.38 77.18 77.41 0.06 85% 14% Set priority 3.13 3.06 3.29 0.10 71% 71% Get priority 187.46 187.29 187.53 0.10 71% 28% Kill [suspended] thread 70.76 70.59 70.82 0.10 71% 28% Yield [no other] thread 104.40 103.29 104.71 0.32 85% 14% Resume [suspended low prio] thread 59.06 59.06 59.06 0.00 100% 100% Resume [runnable low prio] thread 97.11 91.06 98.12 1.73 85% 14% Suspend [runnable] thread 70.76 70.59 70.82 0.10 71% 28% Yield [only low prio] thread 59.06 59.06 59.06 0.00 100% 100% Suspend [runnable->not runnable] 187.46 187.29 187.53 0.10 71% 28% Kill [runnable] thread 95.63 95.29 97.18 0.44 85% 85% Destroy [dead] thread 241.28 236.94 242.12 1.24 85% 14% Destroy [runnable] thread 378.55 370.35 427.06 13.86 85% 85% Resume [high priority] thread 198.77 183.76 452.94 18.77 96% 96% Thread switch 2.59 2.59 2.59 0.00 100% 100% Scheduler lock 41.29 41.18 41.41 0.12 100% 50% Scheduler unlock [0 threads] 40.82 40.71 40.94 0.12 100% 50% Scheduler unlock [1 suspended] 41.29 41.18 41.41 0.12 100% 50% Scheduler unlock [many suspended] 41.29 41.18 41.41 0.12 100% 50% Scheduler unlock [many low prio] 17.94 17.88 18.12 0.09 75% 75% Init mutex 68.71 68.71 68.71 0.00 100% 100% Lock [unlocked] mutex 72.10 72.00 73.41 0.15 96% 71% Unlock [locked] mutex 57.88 57.88 57.88 0.00 100% 100% Trylock [unlocked] mutex 52.24 52.24 52.24 0.00 100% 100% Trylock [locked] mutex 12.41 12.24 12.47 0.09 75% 25% Destroy mutex 427.06 427.06 427.06 0.00 100% 100% Unlock/Lock mutex 34.94 34.82 35.06 0.12 100% 50% Create mbox 0.76 0.71 0.94 0.09 75% 75% Peek [empty] mbox 75.29 75.29 75.29 0.00 100% 100% Put [first] mbox 1.24 1.18 1.41 0.09 75% 75% Peek [1 msg] mbox 75.76 75.76 75.76 0.00 100% 100% Put [second] mbox 0.76 0.71 0.94 0.09 75% 75% Peek [2 msgs] mbox 80.12 80.00 80.24 0.12 100% 50% Get [first] mbox 79.65 79.53 79.76 0.12 100% 50% Get [second] mbox 70.12 70.12 70.12 0.00 100% 100% Tryput [first] mbox 65.76 65.65 65.88 0.12 100% 50% Peek item [non-empty] mbox 78.00 77.88 78.12 0.12 100% 50% Tryget [non-empty] mbox 63.12 63.06 63.29 0.09 75% 75% Peek item [empty] mbox 67.82 67.76 68.00 0.09 75% 75% Tryget [empty] mbox 1.94 1.88 2.12 0.09 75% 75% Waiting to get mbox 1.47 1.41 1.65 0.09 75% 75% Waiting to put mbox 75.59 75.53 75.76 0.09 75% 75% Delete mbox 252.76 252.71 252.94 0.09 75% 75% Put/Get mbox 20.24 20.24 20.24 0.00 100% 100% Init semaphore 54.35 54.35 54.35 0.00 100% 100% Post [0] semaphore 66.59 66.59 66.59 0.00 100% 100% Wait [1] semaphore 52.24 52.24 52.24 0.00 100% 100% Trywait [0] semaphore 53.41 53.41 53.41 0.00 100% 100% Trywait [1] semaphore 10.65 10.59 10.82 0.09 75% 75% Peek semaphore 12.65 12.47 12.71 0.09 75% 25% Destroy semaphore 276.94 276.94 276.94 0.00 100% 100% Post/Wait semaphore 14.94 14.82 15.06 0.12 100% 50% Create counter 2.18 2.12 2.35 0.09 75% 75% Get counter value 3.06 3.06 3.06 0.00 100% 100% Set counter value 78.12 78.12 78.12 0.00 100% 100% Tick counter 13.82 13.65 13.88 0.09 75% 25% Delete counter 26.94 26.82 27.06 0.12 100% 50% Create alarm 104.18 104.00 104.24 0.09 75% 25% Initialize alarm 7.65 7.53 7.76 0.12 100% 50% Disable alarm 104.94 104.94 104.94 0.00 100% 100% Enable alarm 19.47 19.29 19.53 0.09 75% 25% Delete alarm 88.53 88.47 88.71 0.09 75% 75% Tick counter [1 alarm] 418.61 411.29 645.41 14.17 96% 96% Tick counter [many alarms] 139.59 139.53 139.76 0.09 75% 75% Tick & fire counter [1 alarm] 2150.21 2096.71 2367.53 83.59 78% 78% Tick & fire counters [>1 together] 478.15 462.35 733.41 29.61 93% 93% Tick & fire counters [>1 separately] 219.89 218.59 369.88 2.34 99% 99% Alarm latency [0 threads] 292.11 218.59 371.53 37.85 50% 25% Alarm latency [2 threads] 292.96 218.59 370.59 38.12 49% 25% Alarm latency [many threads] 540.90 495.76 1677.41 17.76 98% 0% Alarm -> thread resume latency 79.01 78.59 104.71 0.00 Clock/interrupt latency 123.41 85.88 1982.82 0.00 Clock DSR latency 522 516 536 (main stack: 1124) Thread stack used (1912 total)All done, main stack : stack used 1124 size 2936All done : Interrupt stack used 288 size 4096All done : Idlethread stack used 488 size 2048Timing complete - 32540 ms total </PRE></TD></TR></TABLE></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLESUMMARY="Footer navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="rt-i386-pc.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ecos-user-guide.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="rt-v850-cebsb1.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Board: PC</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="real-time-characterization.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Board: NEC V850 Cosmo Evaluation Board</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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