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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 VR4373</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: Cogent CMA MPC860 (PowerPC) Evaluation "HREF="rt-ppc-cogent.html"><LINKREL="NEXT"TITLE="Board: Intel SA1110 (Assabet)"HREF="rt-arm-assabet.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-cogent.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-arm-assabet.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="RT-VR4300-VRC4373">Board: NEC VR4373</H1><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="LITERALLAYOUT"> Board: NEC VR4373CPU : NEC VR4300 133MHzStartup, main stack : stack used 1304 size 3576Startup : Interrupt stack used 980 size 4096Startup : Idlethread stack used 494 size 2552eCos 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 6.49 microseconds (431 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 ====== ====== ====== ====== ========== ======== 17.21 16.18 22.14 0.88 75% 68% Create thread 0.84 0.78 1.29 0.10 81% 81% Yield thread [all suspended] 0.90 0.62 3.20 0.35 87% 87% Suspend [suspended] thread 0.74 0.65 1.16 0.12 81% 68% Resume thread 1.11 0.90 1.70 0.25 75% 68% Set priority 0.11 0.05 0.35 0.09 75% 75% Get priority 2.93 2.24 8.27 0.78 93% 75% Kill [suspended] thread 0.88 0.78 1.92 0.16 93% 81% Yield [no other] thread 1.82 1.20 4.71 0.62 87% 62% Resume [suspended low prio] thread 0.70 0.63 0.86 0.09 68% 68% Resume [runnable low prio] thread 1.21 1.07 1.61 0.13 81% 68% Suspend [runnable] thread 0.86 0.78 1.58 0.13 81% 81% Yield [only low prio] thread 0.69 0.62 0.84 0.09 68% 68% Suspend [runnable->not runnable] 2.64 2.24 4.35 0.43 81% 62% Kill [runnable] thread 1.50 1.07 5.82 0.56 93% 87% Destroy [dead] thread 3.66 2.75 7.74 0.82 50% 56% Destroy [runnable] thread 13.65 8.33 27.88 3.70 50% 43% Resume [high priority] thread 2.04 1.89 3.32 0.15 46% 49% Thread switch 0.19 0.05 0.83 0.13 48% 44% Scheduler lock 0.50 0.41 1.59 0.13 89% 73% Scheduler unlock [0 threads] 0.52 0.41 1.29 0.14 89% 64% Scheduler unlock [1 suspended] 0.56 0.41 1.49 0.15 42% 47% Scheduler unlock [many suspended] 0.56 0.41 1.41 0.15 43% 47% Scheduler unlock [many low prio] 0.57 0.20 2.33 0.27 65% 50% Init mutex 0.89 0.75 3.35 0.20 96% 75% Lock [unlocked] mutex 0.90 0.74 4.38 0.25 96% 93% Unlock [locked] mutex 0.77 0.65 2.63 0.17 96% 75% Trylock [unlocked] mutex 0.66 0.59 1.16 0.10 75% 75% Trylock [locked] mutex 0.07 0.00 0.45 0.09 75% 75% Destroy mutex 7.95 7.71 9.49 0.19 50% 46% Unlock/Lock mutex 1.04 0.81 3.44 0.27 93% 68% Create mbox 0.10 0.02 0.57 0.11 71% 68% Peek [empty] mbox 1.15 0.83 4.71 0.31 53% 71% Put [first] mbox 0.10 0.02 0.57 0.12 68% 68% Peek [1 msg] mbox 1.01 0.83 3.83 0.22 93% 75% Put [second] mbox 0.09 0.02 0.57 0.10 71% 71% Peek [2 msgs] mbox 1.03 0.81 5.02 0.27 96% 87% Get [first] mbox 0.93 0.81 1.61 0.14 84% 62% Get [second] mbox 1.07 0.77 4.18 0.23 68% 50% Tryput [first] mbox 0.89 0.72 3.49 0.21 93% 71% Peek item [non-empty] mbox 1.04 0.83 4.09 0.26 90% 81% Tryget [non-empty] mbox 0.79 0.68 1.97 0.15 87% 68% Peek item [empty] mbox 0.84 0.72 2.36 0.17 93% 68% Tryget [empty] mbox 0.13 0.02 0.59 0.13 87% 62% Waiting to get mbox 0.13 0.02 0.90 0.13 90% 62% Waiting to put mbox 0.93 0.77 3.23 0.21 90% 71% Delete mbox 4.74 4.51 8.80 0.32 93% 78% Put/Get mbox 0.50 0.21 1.95 0.29 90% 50% Init semaphore 0.86 0.57 2.87 0.29 93% 56% Post [0] semaphore 1.01 0.74 3.62 0.28 93% 56% Wait [1] semaphore 0.87 0.60 3.17 0.28 90% 59% Trywait [0] semaphore 0.74 0.62 1.70 0.14 93% 56% Trywait [1] semaphore 0.36 0.11 1.11 0.26 65% 56% Peek semaphore 0.25 0.12 1.19 0.14 93% 56% Destroy semaphore 7.85 7.52 8.93 0.21 62% 43% Post/Wait semaphore 0.90 0.44 3.08 0.29 65% 28% Create counter 0.07 0.05 0.89 0.05 96% 96% Get counter value 0.06 0.05 0.33 0.02 96% 96% Set counter value 0.88 0.86 1.62 0.05 96% 96% Tick counter 0.13 0.12 0.41 0.02 96% 96% Delete counter 1.37 0.81 2.95 0.27 62% 25% Create alarm 1.35 1.17 6.03 0.31 96% 93% Initialize alarm 0.11 0.08 0.65 0.05 90% 90% Disable alarm 1.23 1.14 3.05 0.15 93% 87% Enable alarm 0.21 0.18 0.47 0.04 90% 90% Delete alarm 1.03 0.99 2.11 0.07 96% 96% Tick counter [1 alarm] 4.96 4.96 4.96 0.00 100% 100% Tick counter [many alarms] 1.70 1.67 2.51 0.05 96% 96% Tick & fire counter [1 alarm] 26.39 26.38 26.71 0.02 96% 96% Tick & fire counters [>1 together] 5.65 5.64 5.91 0.02 96% 96% Tick & fire counters [>1 separately] 2.55 2.38 9.86 0.19 96% 54% Alarm latency [0 threads] 5.37 3.80 9.73 0.95 50% 34% Alarm latency [2 threads] 8.79 5.83 16.12 1.29 57% 14% Alarm latency [many threads] 5.85 2.26 16.24 0.00 Clock/interrupt latency 1540 1536 1544 (main stack: 1664) Thread stack used (2552 total)All done, main stack : stack used 1664 size 3576All done : Interrupt stack used 312 size 4096All done : Idlethread stack used 1440 size 2552Timing complete - 23810 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-cogent.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-arm-assabet.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Board: Cogent CMA MPC860 (PowerPC) Evaluation</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="real-time-characterization.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Board: Intel SA1110 (Assabet)</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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