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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"><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: Toshiba JMR3904 Evaluation Board"HREF="rt-tx39-jmr3904.html"><LINKREL="NEXT"TITLE="Board: Matsushita STDEVAL1 Board"HREF="rt-mn10300-stdeval1.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-tx39-jmr3904.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-mn10300-stdeval1.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="RT-TX49-REF4955">Board: Toshiba REF 4955</H1><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="LITERALLAYOUT"> Board: Toshiba REF 4955CPU : Toshiba TX4955 66MHzStartup, main stack : stack used 960 size 2936Startup : Interrupt stack used 168 size 4096Startup : Idlethread stack used 372 size 2048eCos Kernel TimingsNotes: all times are in microseconds (.000001) unless otherwise statedReading the hardware clock takes 3 `ticks' overhead... this value will be factored out of all other measurementsClock 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 2936All done : Interrupt stack used 136 size 4096All done : Idlethread stack used 996 size 2048Timing complete - 30360 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-tx39-jmr3904.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-mn10300-stdeval1.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Board: Toshiba JMR3904 Evaluation Board</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="real-time-characterization.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Board: Matsushita STDEVAL1 Board</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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