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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: Hitachi EDK7708</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: Motorola MBX"HREF="rt-ppc-mbx860.html"><LINKREL="NEXT"TITLE="Board: CQ CqREEK SH3 Evaluation Board (cq7708)"HREF="rt-sh-cq7708.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-ppc-mbx860.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-sh-cq7708.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="RT-SH-EDK7708">Board: Hitachi EDK7708</H1><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="LITERALLAYOUT"> Board: Hitachi EDK7708CPU: Hitachi SH3/7708 60MHzStartup, main stack : stack used 444 size 4112Startup : Interrupt stack used 76 size 4096Startup : Idlethread stack used 96 size 2048eCos Kernel TimingsNotes: all times are in microseconds (.000001) unless otherwise statedReading the hardware clock takes 2 `ticks' overhead... this value will be factored out of all other measurementsClock interrupt took 14.75 microseconds (55 raw clock ticks)Testing parameters: Clock samples: 32 Threads: 16 Thread switches: 128 Mutexes: 32 Mailboxes: 32 Semaphores: 32 Scheduler operations: 128 Counters: 32 Alarms: 32 Confidence Ave Min Max Var Ave Min Function ====== ====== ====== ====== ========== ======== 15.43 13.60 24.00 1.29 62% 50% Create thread 3.33 3.20 4.27 0.18 93% 68% Yield thread [all suspended] 2.90 2.40 5.33 0.36 81% 62% Suspend [suspended] thread 2.93 2.67 4.80 0.27 93% 87% Resume thread 4.30 3.73 10.13 0.73 93% 93% Set priority 0.65 0.27 2.13 0.28 68% 62% Get priority 9.72 8.53 21.33 1.45 93% 93% Kill [suspended] thread 3.33 3.20 4.53 0.20 93% 75% Yield [no other] thread 5.30 4.80 10.13 0.65 93% 87% Resume [suspended low prio] thread 2.80 2.40 4.53 0.27 81% 75% Resume [runnable low prio] thread 4.82 4.00 8.27 0.49 68% 25% Suspend [runnable] thread 3.32 3.20 4.00 0.16 93% 68% Yield [only low prio] thread 2.82 2.40 4.27 0.25 81% 12% Suspend [runnable->not runnable] 9.45 8.53 19.47 1.25 93% 93% Kill [runnable] thread 5.30 4.53 11.20 0.74 87% 93% Destroy [dead] thread 11.83 10.67 25.07 1.65 93% 93% Destroy [runnable] thread 19.53 17.33 31.20 1.88 75% 75% Resume [high priority] thread 6.70 6.67 11.47 0.07 99% 99% Thread switch 0.33 0.27 0.80 0.10 75% 75% Scheduler lock 1.74 1.60 2.67 0.14 99% 50% Scheduler unlock [0 threads] 1.72 1.60 3.20 0.14 99% 57% Scheduler unlock [1 suspended] 1.81 1.60 3.20 0.10 75% 23% Scheduler unlock [many suspended] 1.86 1.60 3.20 0.02 94% 4% Scheduler unlock [many low prio] 1.22 1.07 3.20 0.20 96% 65% Init mutex 3.21 2.93 5.87 0.17 68% 28% Lock [unlocked] mutex 3.36 2.93 7.47 0.30 84% 75% Unlock [locked] mutex 2.83 2.67 5.33 0.22 96% 65% Trylock [unlocked] mutex 2.53 2.40 2.93 0.14 96% 53% Trylock [locked] mutex 0.28 0.27 0.80 0.03 96% 96% Destroy mutex 20.09 19.73 23.20 0.23 84% 12% Unlock/Lock mutex 2.38 2.13 4.53 0.17 59% 34% Create mbox 0.45 0.27 1.33 0.15 56% 40% Peek [empty] mbox 3.70 3.20 7.20 0.29 84% 59% Put [first] mbox 0.45 0.27 0.80 0.13 62% 34% Peek [1 msg] mbox 3.67 3.20 5.60 0.23 81% 6% Put [second] mbox 0.42 0.27 0.53 0.13 59% 40% Peek [2 msgs] mbox 3.98 3.47 7.47 0.24 59% 9% Get [first] mbox 3.97 3.47 4.80 0.24 59% 12% Get [second] mbox 3.51 3.20 6.67 0.28 56% 78% Tryput [first] mbox 3.29 2.93 5.60 0.29 59% 65% Peek item [non-empty] mbox 4.06 3.47 7.20 0.26 68% 3% Tryget [non-empty] mbox 3.03 2.67 5.33 0.19 93% 3% Peek item [empty] mbox 3.36 3.20 4.80 0.18 96% 56% Tryget [empty] mbox 0.57 0.27 1.33 0.09 84% 3% Waiting to get mbox 0.52 0.27 1.07 0.11 62% 21% Waiting to put mbox 3.88 3.47 7.47 0.30 78% 65% Delete mbox 12.04 11.73 17.33 0.33 96% 96% Put/Get mbox 1.17 1.07 2.40 0.16 71% 71% Init semaphore 2.67 2.40 4.27 0.15 62% 25% Post [0] semaphore 3.00 2.67 4.53 0.17 65% 12% Wait [1] semaphore 2.54 2.40 4.80 0.20 96% 71% Trywait [0] semaphore 2.42 2.40 2.93 0.03 96% 96% Trywait [1] semaphore 0.79 0.53 2.13 0.15 59% 28% Peek semaphore 0.77 0.53 1.87 0.12 71% 25% Destroy semaphore 12.64 12.27 17.07 0.28 84% 96% Post/Wait semaphore 1.27 1.07 2.93 0.17 53% 43% Create counter 0.54 0.27 1.33 0.13 59% 21% Get counter value 0.47 0.27 1.60 0.17 46% 43% Set counter value 3.47 3.20 4.80 0.16 53% 28% Tick counter 0.80 0.53 2.13 0.13 62% 25% Delete counter 1.86 1.60 4.00 0.21 43% 40% Create alarm 5.12 4.80 9.07 0.36 93% 75% Initialize alarm 0.44 0.27 1.33 0.19 87% 53% Disable alarm 4.77 4.27 9.60 0.35 87% 62% Enable alarm 1.02 0.80 2.67 0.18 53% 40% Delete alarm 3.56 3.47 5.33 0.15 84% 84% Tick counter [1 alarm] 15.04 14.93 16.27 0.16 71% 71% Tick counter [many alarms] 5.75 5.60 8.00 0.21 96% 68% Tick & fire counter [1 alarm] 79.60 79.47 81.07 0.17 96% 65% Tick & fire counters [>1 together] 17.04 16.80 18.93 0.15 65% 31% Tick & fire counters [>1 separately] 12.44 12.27 29.60 0.31 96% 96% Alarm latency [0 threads] 14.06 12.27 27.20 0.53 82% 4% Alarm latency [2 threads] 19.62 17.07 38.40 1.44 57% 34% Alarm latency [many threads] 2.79 2.40 6.13 0.00 Clock/interrupt latency 376 376 376 (main stack: 764) Thread stack used (992 total)All done, main stack : stack used 764 size 4112All done : Interrupt stack used 176 size 4096All done : Idlethread stack used 352 size 2048Timing complete - 23860 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-ppc-mbx860.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-sh-cq7708.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Board: Motorola MBX</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="real-time-characterization.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Board: CQ CqREEK SH3 Evaluation Board (cq7708)</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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