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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 JMR3904 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: Intel IQ80310 XScale Development Kit"HREF="rt-arm-iq80310.html"><LINKREL="NEXT"TITLE="Board: Toshiba REF 4955"HREF="rt-tx49-ref4955.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-arm-iq80310.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-tx49-ref4955.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="RT-TX39-JMR3904">Board: Toshiba JMR3904 Evaluation Board</H1><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="LITERALLAYOUT"> Board: Toshiba JMR3904 Evaluation BoardCPU : TMPR3904F 50MHzeCOS Kernel TimingsNote: all times are in microseconds (.000001) unless otherwise statedReading the hardware clock takes 0 'ticks' overhead... this value will be factored out of all other measurementsClock interrupt took 29.68 microseconds (45 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 ====== ====== ====== ====== ========== ======== 13.62 11.72 27.99 1.51 79% 54% Create thread 2.77 2.60 3.91 0.26 79% 79% Yield thread [all suspended] 3.31 2.60 6.51 0.27 83% 12% Suspend [suspended] thread 2.58 1.95 7.81 0.47 58% 37% Resume thread 4.94 4.56 11.07 0.60 95% 79% Set priority 0.71 0.65 1.95 0.10 95% 95% Get priority 14.97 14.32 25.39 0.87 95% 95% Kill [suspended] thread 2.25 1.95 9.11 0.57 95% 95% Yield [no other] thread 7.27 6.51 12.37 0.42 79% 16% Resume [suspended low prio] thread 2.28 1.95 7.16 0.51 95% 79% Resume [runnable low prio] thread 4.31 3.26 12.37 0.75 87% 79% Suspend [runnable] thread 2.17 1.95 7.16 0.42 95% 95% Yield [only low prio] thread 2.39 1.95 6.51 0.51 95% 58% Suspend [runnable->not runnable] 13.43 12.37 22.79 0.80 91% 91% Kill [runnable] thread 22.30 20.83 37.76 1.76 91% 91% Resume [high priority] thread 4.62 4.56 11.07 0.13 98% 98% Thread switch 1.51 1.30 2.60 0.29 68% 68% Scheduler lock 2.36 1.95 3.26 0.31 61% 37% Scheduler unlock [0 threads] 2.39 1.95 5.21 0.32 62% 36% Scheduler unlock [1 suspended] 2.38 1.95 4.56 0.32 61% 37% Scheduler unlock [many suspended] 2.38 1.95 5.21 0.32 61% 37% Scheduler unlock [many low prio] 0.90 0.65 3.26 0.35 71% 71% Init mutex 2.48 1.95 8.46 0.50 50% 46% Lock [unlocked] mutex 2.83 2.60 9.11 0.42 93% 93% Unlock [locked] mutex 2.30 1.95 6.51 0.45 96% 65% Trylock [unlocked] mutex 1.99 1.30 5.86 0.24 84% 12% Trylock [locked] mutex 0.04 0.00 1.30 0.08 96% 96% Destroy mutex 42.40 42.32 44.92 0.16 96% 96% Unlock/Lock mutex 1.44 1.30 5.86 0.28 96% 96% Create mbox 0.51 0.00 1.30 0.25 71% 25% Peek [empty] mbox 2.93 2.60 9.11 0.51 96% 78% Put [first] mbox 0.51 0.00 1.30 0.25 71% 25% Peek [1 msg] mbox 4.19 3.91 5.21 0.34 59% 59% Put [second] mbox 0.45 0.00 0.65 0.28 68% 31% Peek [2 msgs] mbox 3.28 2.60 10.42 0.45 65% 31% Get [first] mbox 3.34 2.60 9.77 0.40 78% 18% Get [second] mbox 2.69 1.95 9.11 0.40 78% 18% Tryput [first] mbox 2.75 1.95 7.81 0.32 93% 3% Peek item [non-empty] mbox 3.15 2.60 9.11 0.48 53% 43% Tryget [non-empty] mbox 2.22 1.95 6.51 0.41 96% 78% Peek item [empty] mbox 2.40 1.95 5.86 0.42 50% 46% Tryget [empty] mbox 0.47 0.00 0.65 0.26 71% 28% Waiting to get mbox 0.59 0.00 1.30 0.15 84% 12% Waiting to put mbox 4.01 3.26 10.42 0.40 81% 15% Delete mbox 26.18 26.04 30.60 0.28 96% 96% Put/Get mbox 0.92 0.65 3.91 0.38 71% 71% Init semaphore 2.24 1.95 6.51 0.43 96% 75% Post [0] semaphore 2.32 1.95 7.16 0.48 96% 65% Wait [1] semaphore 2.03 1.30 5.86 0.24 90% 6% Trywait [0] semaphore 1.91 1.30 4.56 0.23 78% 18% Trywait [1] semaphore 0.77 0.00 1.95 0.30 65% 9% Peek semaphore 0.61 0.00 1.95 0.15 84% 12% Destroy semaphore 22.62 22.14 30.60 0.61 96% 62% Post/Wait semaphore 0.92 0.65 3.91 0.38 71% 71% Create counter 0.69 0.65 1.95 0.08 96% 96% Get counter value 0.41 0.00 1.30 0.33 56% 40% Set counter value 3.21 2.60 5.86 0.27 71% 21% Tick counter 0.65 0.00 3.26 0.16 84% 12% Delete counter 1.57 1.30 4.56 0.38 71% 71% Create alarm 4.52 3.91 13.02 0.57 50% 46% Initialize alarm 0.61 0.00 1.95 0.15 84% 12% Disable alarm 4.43 3.91 9.11 0.43 56% 40% Enable alarm 0.87 0.65 2.60 0.32 71% 71% Delete alarm 2.93 2.60 6.51 0.43 96% 65% Tick counter [1 alarm] 14.83 14.32 22.79 0.60 96% 59% Tick counter [many alarms] 4.88 4.56 11.07 0.51 96% 78% Tick & fire counter [1 alarm] 83.25 82.03 102.86 1.23 96% 93% Tick & fire counters [>1 together] 17.58 16.93 27.34 0.61 50% 46% Tick & fire counters [>1 separately] 26.18 24.74 40.36 0.30 97% 0% Alarm latency [0 threads] 33.88 29.30 56.64 1.70 85% 6% Alarm latency [2 threads] 36.37 29.30 61.20 3.25 53% 24% Alarm latency [many threads] 7.85 6.51 14.97 0.00 Clock/interrupt latencyTiming complete - 23540 ms totalPASS:<Basic timing OK>EXIT:<done> </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-arm-iq80310.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-tx49-ref4955.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Board: Intel IQ80310 XScale Development Kit</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="real-time-characterization.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Board: Toshiba REF 4955</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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