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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: Intel SA1110 (Assabet)</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: NEC VR4373"HREF="rt-vr4300-vrc4373.html"><LINKREL="NEXT"TITLE="Board: Intel SA1100 (Brutus)"HREF="rt-arm-brutus.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-vr4300-vrc4373.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-brutus.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="RT-ARM-ASSABET">Board: Intel SA1110 (Assabet)</H1><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="LITERALLAYOUT">Board: Intel SA1110 (Assabet)CPU : StrongARM 221.2 MHzMicroseconds for one run through Dhrystone: 3.3 Dhrystones per Second: 306748.5 VAX MIPS rating = 174.586 Startup, main stack : stack used 420 size 2400Startup : Interrupt stack used 136 size 4096Startup : Idlethread stack used 84 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 3.20 microseconds (11 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 ====== ====== ====== ====== ========== ======== 5.98 4.88 14.38 0.70 57% 35% Create thread 0.86 0.81 1.90 0.08 87% 87% Yield thread [all suspended] 1.05 0.81 3.53 0.19 46% 39% Suspend [suspended] thread 1.07 0.81 3.80 0.18 48% 35% Resume thread 1.36 1.09 5.97 0.22 45% 39% Set priority 0.73 0.54 1.90 0.19 85% 50% Get priority 2.93 2.44 13.56 0.39 79% 70% Kill [suspended] thread 0.89 0.81 4.34 0.14 89% 89% Yield [no other] thread 1.63 1.36 4.61 0.17 57% 29% Resume [suspended low prio] thread 1.03 0.81 3.53 0.19 46% 42% Resume [runnable low prio] thread 1.74 1.36 6.51 0.22 87% 6% Suspend [runnable] thread 0.93 0.81 4.61 0.18 98% 78% Yield [only low prio] thread 1.06 0.81 3.26 0.19 42% 39% Suspend [runnable->not runnable] 2.56 1.90 13.02 0.41 87% 34% Kill [runnable] thread 2.02 1.63 7.05 0.22 92% 3% Destroy [dead] thread 3.09 2.44 15.19 0.51 78% 46% Destroy [runnable] thread 6.77 5.43 13.02 0.59 75% 17% Resume [high priority] thread 1.81 1.63 7.87 0.18 49% 49% Thread switch 0.25 0.00 1.36 0.05 89% 10% Scheduler lock 0.51 0.27 1.36 0.06 85% 13% Scheduler unlock [0 threads] 0.51 0.27 1.09 0.06 85% 13% Scheduler unlock [1 suspended] 0.51 0.27 1.09 0.07 85% 14% Scheduler unlock [many suspended] 0.51 0.27 1.09 0.06 85% 13% Scheduler unlock [many low prio] 0.52 0.27 2.17 0.15 62% 31% Init mutex 0.97 0.54 4.34 0.28 84% 65% Lock [unlocked] mutex 1.05 0.81 5.15 0.28 96% 96% Unlock [locked] mutex 0.86 0.54 3.26 0.24 65% 31% Trylock [unlocked] mutex 0.79 0.54 3.53 0.23 43% 46% Trylock [locked] mutex 0.33 0.27 1.63 0.11 90% 90% Destroy mutex 4.16 3.80 8.95 0.30 75% 96% Unlock/Lock mutex 0.70 0.54 2.98 0.21 96% 65% Create mbox 0.59 0.27 1.63 0.14 75% 9% Peek [empty] mbox 1.33 1.09 5.70 0.31 96% 93% Put [first] mbox 0.61 0.27 1.63 0.13 81% 3% Peek [1 msg] mbox 1.35 1.09 5.43 0.31 96% 87% Put [second] mbox 0.58 0.27 1.36 0.11 78% 6% Peek [2 msgs] mbox 1.38 1.09 4.88 0.25 59% 37% Get [first] mbox 1.40 1.09 5.15 0.26 62% 34% Get [second] mbox 1.27 0.81 4.88 0.28 90% 65% Tryput [first] mbox 1.34 0.81 4.61 0.22 59% 6% Peek item [non-empty] mbox 1.47 1.09 5.15 0.27 84% 12% Tryget [non-empty] mbox 1.12 0.81 4.34 0.23 59% 31% Peek item [empty] mbox 1.14 0.81 4.07 0.24 71% 25% Tryget [empty] mbox 0.59 0.27 1.36 0.12 78% 6% Waiting to get mbox 0.59 0.27 1.36 0.12 78% 6% Waiting to put mbox 1.28 0.81 5.43 0.32 87% 78% Delete mbox 2.64 2.17 10.31 0.48 96% 96% Put/Get mbox 0.47 0.27 2.17 0.19 46% 46% Init semaphore 0.77 0.54 3.80 0.26 90% 56% Post [0] semaphore 0.90 0.54 4.07 0.26 75% 21% Wait [1] semaphore 0.85 0.54 3.26 0.21 56% 28% Trywait [0] semaphore 0.69 0.54 2.17 0.18 96% 62% Trywait [1] semaphore 0.44 0.27 2.17 0.19 96% 56% Peek semaphore 0.38 0.27 1.90 0.17 96% 75% Destroy semaphore 2.74 2.44 9.49 0.42 96% 96% Post/Wait semaphore 0.43 0.27 1.90 0.18 96% 56% Create counter 0.49 0.00 2.17 0.18 56% 3% Get counter value 0.33 0.00 1.63 0.13 78% 6% Set counter value 1.03 0.81 2.44 0.22 84% 50% Tick counter 0.42 0.27 1.90 0.20 90% 65% Delete counter 0.70 0.54 2.44 0.20 93% 62% Create alarm 1.65 1.36 6.78 0.40 96% 81% Initialize alarm 0.75 0.54 1.63 0.18 43% 43% Disable alarm 1.75 1.36 7.05 0.38 65% 81% Enable alarm 0.81 0.54 2.44 0.15 62% 28% Delete alarm 1.01 0.81 2.17 0.16 56% 40% Tick counter [1 alarm] 4.19 4.07 5.43 0.16 96% 68% Tick counter [many alarms] 1.48 1.36 3.80 0.20 96% 78% Tick & fire counter [1 alarm] 20.23 20.07 22.52 0.21 96% 65% Tick & fire counters [>1 together] 4.70 4.61 6.78 0.16 87% 87% Tick & fire counters [>1 separately] 2.81 2.71 14.38 0.20 98% 98% Alarm latency [0 threads] 3.19 2.71 13.56 0.38 73% 59% Alarm latency [2 threads] 9.71 7.87 18.17 1.25 59% 53% Alarm latency [many threads] 5.77 5.43 45.57 0.68 97% 97% Alarm -> thread resume latency 2.38 0.81 9.49 0.00 Clock/interrupt latency 2.02 1.09 7.32 0.00 Clock DSR latency 11 0 316 (main stack: 764) Thread stack used (1120 total)All done, main stack : stack used 764 size 2400All done : Interrupt stack used 287 size 4096All done : Idlethread stack used 272 size 2048Timing complete - 30220 ms total </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-vr4300-vrc4373.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-brutus.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Board: NEC VR4373</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 SA1100 (Brutus)</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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