📄 rt-arm-ep7211.html
字号:
<!-- 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: Cirrus Logic EDB7111-2 Development 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 StrongARM EBSA-285 Evaluation Board"HREF="rt-arm-ebsa285.html"><LINKREL="NEXT"TITLE="Board: ARM PID Evaluation Board"HREF="rt-arm-pid.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-ebsa285.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-pid.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="RT-ARM-EP7211">Board: Cirrus Logic EDB7111-2 Development Board</H1><DIVCLASS="SECT2"><H2CLASS="SECT2"><ANAME="AEN4500">CPU : Cirrus Logic EP7211 73MHz</H2><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="LITERALLAYOUT">Board: Cirrus Logic EDB7111-2 Development BoardCPU : Cirrus Logic EP7211 73MHzStartup, main stack : stack used 404 size 2400Startup : Interrupt stack used 136 size 4096Startup : Idlethread stack used 88 size 2048eCos Kernel TimingsNotes: 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 356.69 microseconds (182 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 ====== ====== ====== ====== ========== ======== 22.71 17.58 37.11 3.07 46% 34% Create thread 4.36 3.91 5.86 0.70 76% 76% Yield thread [all suspended] 4.24 3.91 7.81 0.56 84% 84% Suspend [suspended] thread 4.09 1.95 7.81 0.45 85% 3% Resume thread 5.31 3.91 11.72 0.92 65% 32% Set priority 2.11 1.95 3.91 0.28 92% 92% Get priority 11.54 9.77 25.39 0.99 62% 28% Kill [suspended] thread 4.46 3.91 9.77 0.82 75% 75% Yield [no other] thread 7.57 5.86 13.67 0.69 75% 20% Resume [suspended low prio] thread 3.94 1.95 5.86 0.18 92% 3% Resume [runnable low prio] thread 7.02 5.86 13.67 1.05 53% 45% Suspend [runnable] thread 4.42 3.91 9.77 0.79 76% 76% Yield [only low prio] thread 4.24 1.95 5.86 0.61 79% 1% Suspend [runnable->not runnable] 11.29 9.77 27.34 1.14 57% 37% Kill [runnable] thread 6.29 3.91 11.72 0.84 71% 4% Destroy [dead] thread 13.52 11.72 31.25 0.90 70% 25% Destroy [runnable] thread 24.50 21.48 42.97 1.69 79% 12% Resume [high priority] thread 8.79 7.81 19.53 1.05 99% 53% Thread switch 1.66 0.00 3.91 0.52 83% 15% Scheduler lock 2.59 1.95 3.91 0.86 67% 67% Scheduler unlock [0 threads] 2.62 1.95 3.91 0.88 65% 65% Scheduler unlock [1 suspended] 2.61 1.95 3.91 0.87 66% 66% Scheduler unlock [many suspended] 2.58 1.95 3.91 0.85 67% 67% Scheduler unlock [many low prio] 2.69 1.95 5.86 0.96 65% 65% Init mutex 4.88 3.91 9.77 1.10 96% 56% Lock [unlocked] mutex 4.64 3.91 11.72 1.05 71% 71% Unlock [locked] mutex 3.97 1.95 7.81 0.47 81% 9% Trylock [unlocked] mutex 3.48 1.95 3.91 0.67 78% 21% Trylock [locked] mutex 1.77 0.00 3.91 0.44 84% 12% Destroy mutex 31.92 29.30 42.97 1.65 71% 18% Unlock/Lock mutex 4.09 3.91 9.77 0.35 96% 96% Create mbox 1.83 0.00 3.91 0.34 87% 9% Peek [empty] mbox 5.31 3.91 9.77 0.96 62% 34% Put [first] mbox 1.59 0.00 1.95 0.60 81% 18% Peek [1 msg] mbox 5.19 3.91 9.77 1.04 56% 40% Put [second] mbox 1.65 0.00 3.91 0.62 78% 18% Peek [2 msgs] mbox 5.43 3.91 9.77 0.86 68% 28% Get [first] mbox 5.31 3.91 7.81 0.96 59% 34% Get [second] mbox 4.76 3.91 9.77 1.07 62% 62% Tryput [first] mbox 4.82 1.95 9.77 1.15 93% 3% Peek item [non-empty] mbox 5.55 3.91 11.72 0.82 71% 25% Tryget [non-empty] mbox 3.97 1.95 7.81 0.59 75% 12% Peek item [empty] mbox 4.33 3.91 7.81 0.69 81% 81% Tryget [empty] mbox 1.59 0.00 3.91 0.79 68% 25% Waiting to get mbox 1.71 0.00 3.91 0.53 81% 15% Waiting to put mbox 5.25 3.91 9.77 1.01 59% 37% Delete mbox 17.82 15.63 29.30 1.14 65% 18% Put/Get mbox 2.69 1.95 5.86 0.96 65% 65% Init semaphore 3.78 1.95 7.81 0.46 84% 12% Post [0] semaphore 4.27 3.91 7.81 0.62 84% 84% Wait [1] semaphore 3.72 1.95 7.81 0.66 75% 18% Trywait [0] semaphore 3.29 1.95 5.86 0.92 62% 34% Trywait [1] semaphore 2.32 1.95 3.91 0.59 81% 81% Peek semaphore 1.89 0.00 3.91 0.24 90% 6% Destroy semaphore 15.75 13.67 29.30 1.07 68% 21% Post/Wait semaphore 2.69 1.95 5.86 0.96 65% 65% Create counter 1.83 0.00 1.95 0.23 93% 6% Get counter value 1.53 0.00 3.91 0.76 71% 25% Set counter value 4.82 3.91 5.86 0.97 53% 53% Tick counter 1.89 0.00 1.95 0.12 96% 3% Delete counter 3.78 1.95 7.81 0.46 84% 12% Create alarm 7.99 5.86 15.63 0.70 81% 9% Initialize alarm 1.71 0.00 1.95 0.43 87% 12% Disable alarm 7.14 5.86 11.72 1.04 56% 40% Enable alarm 2.50 1.95 3.91 0.79 71% 71% Delete alarm 4.94 3.91 7.81 1.04 96% 50% Tick counter [1 alarm] 19.47 17.58 23.44 0.36 87% 9% Tick counter [many alarms] 7.63 5.86 11.72 0.55 81% 15% Tick & fire counter [1 alarm] 99.06 97.66 105.47 1.05 59% 37% Tick & fire counters [>1 together] 22.15 21.48 27.34 0.96 71% 71% Tick & fire counters [>1 separately] 359.16 357.42 378.91 0.87 71% 25% Alarm latency [0 threads] 364.03 357.42 402.34 3.03 58% 15% Alarm latency [2 threads] 408.25 402.34 416.02 2.89 53% 24% Alarm latency [many threads] 381.16 376.95 492.19 2.48 95% 46% Alarm -> thread resume latency 9.79 5.86 19.53 0.00 Clock/interrupt latency 12.13 5.86 31.25 0.00 Clock DSR latency 12 0 316 (main stack: 752) Thread stack used (1120 total)All done, main stack : stack used 752 size 2400All done : Interrupt stack used 288 size 4096All done : Idlethread stack used 276 size 2048Timing complete - 30450 ms total⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -