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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 Solution Engine 7751 SH4 (se7751)</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: Hitachi HS7729PCI HS7729 SH3"HREF="rt-sh-hs7729pci.html"><LINKREL="NEXT"TITLE="Board: PC"HREF="rt-i386-pc.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-sh-hs7729pci.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-i386-pc.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="RT-SH-SE7751">Board: Hitachi Solution Engine 7751 SH4 (se7751)</H1><TABLEBORDER="5"BGCOLOR="#E0E0F0"WIDTH="70%"><TR><TD><PRECLASS="LITERALLAYOUT">Board: Hitachi Solution Engine 7751 SH4 (se7751)CPU: Hitachi SH4/7751 162MHzStartup, main stack : stack used 464 size 4112Startup : Interrupt stack used 92 size 4096Startup : Idlethread stack used 94 size 2048eCos Kernel TimingsNotes: all times are in microseconds (.000001) unless otherwise statedReading the hardware clock takes 1 `ticks' overhead... this value will be factored out of all other measurementsClock interrupt took 14.27 microseconds (96 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 ====== ====== ====== ====== ========== ======== 8.06 5.63 12.15 1.37 46% 29% Create thread 1.15 1.04 5.19 0.15 98% 98% Yield thread [all suspended] 1.13 0.89 5.04 0.27 89% 62% Suspend [suspended] thread 1.11 0.89 5.19 0.26 89% 71% Resume thread 1.45 1.19 3.56 0.23 53% 53% Set priority 0.21 0.15 1.19 0.10 90% 79% Get priority 4.15 3.56 13.04 0.53 68% 64% Kill [suspended] thread 1.12 1.04 3.70 0.12 98% 70% Yield [no other] thread 1.75 1.33 8.00 0.38 59% 65% Resume [suspended low prio] thread 1.10 0.89 4.59 0.25 87% 73% Resume [runnable low prio] thread 1.59 1.33 5.93 0.33 81% 79% Suspend [runnable] thread 1.13 1.04 4.30 0.13 98% 71% Yield [only low prio] thread 1.09 0.89 3.56 0.21 89% 70% Suspend [runnable->not runnable] 4.96 4.30 11.70 0.44 68% 39% Kill [runnable] thread 1.95 1.48 8.00 0.34 75% 57% Destroy [dead] thread 4.41 3.85 10.37 0.47 53% 57% Destroy [runnable] thread 13.15 11.41 23.85 1.11 73% 39% Resume [high priority] thread 3.10 2.96 6.22 0.11 41% 39% Thread switch 0.13 0.00 1.33 0.06 74% 21% Scheduler lock 0.76 0.74 1.78 0.03 96% 96% Scheduler unlock [0 threads] 0.76 0.74 1.78 0.03 96% 96% Scheduler unlock [1 suspended] 0.77 0.74 2.67 0.05 95% 95% Scheduler unlock [many suspended] 0.76 0.74 2.37 0.04 95% 95% Scheduler unlock [many low prio] 0.52 0.15 2.67 0.26 65% 34% Init mutex 1.23 1.04 5.63 0.32 93% 93% Lock [unlocked] mutex 1.45 1.19 5.33 0.31 90% 87% Unlock [locked] mutex 1.13 0.89 4.15 0.28 90% 84% Trylock [unlocked] mutex 1.00 0.89 2.96 0.17 87% 87% Trylock [locked] mutex 0.37 0.30 1.78 0.13 90% 84% Destroy mutex 9.09 8.59 12.59 0.43 71% 71% Unlock/Lock mutex 0.93 0.59 4.30 0.40 84% 71% Create mbox 0.26 0.00 1.19 0.17 71% 59% Peek [empty] mbox 3.03 2.52 6.37 0.47 50% 59% Put [first] mbox 0.23 0.00 0.74 0.14 68% 15% Peek [1 msg] mbox 2.93 2.52 4.74 0.46 71% 59% Put [second] mbox 0.22 0.00 0.59 0.13 68% 15% Peek [2 msgs] mbox 2.07 1.63 5.93 0.37 84% 59% Get [first] mbox 2.06 1.63 4.74 0.34 78% 59% Get [second] mbox 1.48 1.04 5.48 0.37 62% 53% Tryput [first] mbox 1.31 1.04 4.89 0.32 96% 75% Peek item [non-empty] mbox 1.47 1.04 5.78 0.38 84% 65% Tryget [non-empty] mbox 1.15 0.89 3.11 0.18 71% 56% Peek item [empty] mbox 1.20 1.04 3.85 0.21 93% 84% Tryget [empty] mbox 0.21 0.00 0.74 0.14 68% 18% Waiting to get mbox 0.19 0.00 0.44 0.10 43% 15% Waiting to put mbox 2.19 1.93 5.78 0.27 93% 71% Delete mbox 10.23 9.93 11.56 0.15 53% 37% Put/Get mbox 0.37 0.15 1.33 0.26 71% 71% Init semaphore 0.98 0.89 2.52 0.13 96% 68% Post [0] semaphore 1.08 0.89 3.26 0.15 68% 93% Wait [1] semaphore 0.98 0.89 3.41 0.16 93% 93% Trywait [0] semaphore 0.73 0.59 1.63 0.07 71% 25% Trywait [1] semaphore 0.33 0.30 1.33 0.07 93% 93% Peek semaphore 0.34 0.30 1.78 0.09 96% 96% Destroy semaphore 9.36 8.74 10.37 0.33 56% 31% Post/Wait semaphore 0.54 0.15 3.26 0.23 59% 37% Create counter 0.13 0.00 0.59 0.07 68% 25% Get counter value 0.14 0.00 0.59 0.07 68% 25% Set counter value 3.74 3.56 5.33 0.17 53% 75% Tick counter 0.32 0.15 2.07 0.12 71% 21% Delete counter 1.59 1.19 3.11 0.29 71% 43% Create alarm 1.89 1.48 6.37 0.44 87% 78% Initialize alarm 0.20 0.15 0.74 0.09 87% 84% Disable alarm 1.62 1.33 5.63 0.41 87% 84% Enable alarm 0.40 0.30 1.33 0.13 87% 62% Delete alarm 4.03 3.70 5.78 0.27 68% 56% Tick counter [1 alarm] 14.18 13.93 15.70 0.27 81% 75% Tick counter [many alarms] 4.81 4.59 5.93 0.13 81% 15% Tick & fire counter [1 alarm] 30.77 30.52 33.63 0.20 75% 65% Tick & fire counters [>1 together] 15.10 14.52 17.04 0.23 71% 3% Tick & fire counters [>1 separately] 8.78 8.59 18.22 0.20 97% 89% Alarm latency [0 threads] 11.29 9.33 17.48 1.02 56% 22% Alarm latency [2 threads] 18.70 15.70 26.37 1.45 54% 22% Alarm latency [many threads] 19.40 18.81 57.48 0.65 97% 97% Alarm -> thread resume latency 4.18 2.81 8.89 0.00 Clock/interrupt latency 3.98 2.52 11.56 0.00 Clock DSR latency 6 0 380 (main stack: 728) Thread stack used (992 total)All done, main stack : stack used 728 size 4112All done : Interrupt stack used 196 size 4096All done : Idlethread stack used 360 size 2048Timing complete - 29790 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-sh-hs7729pci.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-i386-pc.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Board: Hitachi HS7729PCI HS7729 SH3</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="real-time-characterization.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Board: PC</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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