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  • Boot Time includes topics such as measurement, analysis, human factors, initializatio The time that a product takes to boot directly impacts the first perception an end u
    28 KB (4,414 words) - 14:21, 30 June 2022
  • This page has information about Real-time usage of Linux. Also this page has information about timing systems for Lin == Real Time Wiki ==
    5 KB (651 words) - 09:55, 28 June 2016
  • ;Boot up: The time from power on to user start (the start of user init). ;Cold start: The time from power on to first available use.
    6 KB (985 words) - 20:18, 5 December 2008
  • ...yet. To sign up for a task related to this HOWTO, please see the [[Bootup Time Howto Task List]]. == Bootup Time Reduction Technique Outline ==
    9 KB (1,279 words) - 18:45, 27 January 2010
  • [[Category:Boot Time]]
    803 bytes (116 words) - 01:10, 14 July 2007
  • Below is a list of tasks to be worked on for [[Boot-up Time Reduction Howto]] project. [[Category:Boot Time]]
    3 KB (438 words) - 15:16, 24 September 2007
  • This is the specification of [[bootup time]] technologies and features, of the [[Bootup Time Working Group]] of the CE Linux Forum.
    2 KB (280 words) - 17:01, 20 September 2023
  • Below is a list of tasks to be worked on in the Bootup Time Working Group. See also the [[Bootup Time Howto Task List]]
    2 KB (382 words) - 15:09, 21 September 2007
  • [[Category:Boot Time]]
    1 KB (157 words) - 21:04, 13 July 2007
  • :The Bootup Time Working Group shall work to minimize the activation and deactivation times ...dination between the firmware and the OS, work inside the OS to reduce the time to initialize kernel sub-systems and device drivers, and work to increase a
    5 KB (755 words) - 17:01, 20 September 2023
  • == Real-Time Working Group == ...ollect the publicly available information about the activities of the real-time working group.
    3 KB (497 words) - 23:30, 27 October 2011
  • ...of the above mentioned interval; an ''absolute deadline'' is the moment in time at which the response must be completed. ; Granularity : The time range of a certain interval. We can talk about the granularity of a timing
    8 KB (1,186 words) - 16:48, 13 September 2012
  • 21 bytes (2 words) - 11:41, 24 September 2007
  • #REDIRECT [[Boot Time]]
    23 bytes (3 words) - 21:46, 20 April 2009
  • ; Summary : Improve UBIFS mounting time very good. This affects overall Linux boot time, for a UBIFS-based
    2 KB (248 words) - 13:19, 25 January 2011
  • 320 bytes (41 words) - 00:24, 28 October 2011
  • == librtpi: Conditional Variables for Real-Time Applications [ELC 2020]== This presentation talks about real-time concepts,<br>
    19 KB (2,723 words) - 22:45, 20 October 2020
  • The slides cover existing boot time reduction and <br> == Improving Embedded Systems Boot Time by Hibernation: An Overview on the State of the Art and a Case of Study on
    10 KB (1,437 words) - 21:45, 29 October 2020
  • ...materials in support of Tim Bird's presentation "Improving Android Bootup Time", ...roid system, as well as present some ideas for places where Android bootup time could be improved.
    2 KB (361 words) - 11:24, 13 January 2011
  • * Measuring Boot Time * Tools for measuring and tracing boot time
    9 KB (1,352 words) - 14:36, 27 October 2011
  • Here is information about Android Boot-Time Readahead time, using readahead on only a single portion of the boot sequence. A 9%
    6 KB (954 words) - 15:07, 22 January 2013
  • This time I want to talk about dealing with time in device drivers and I chose to talk about two groups: ...d sometime you activate something and have to wait for a certain amount of time until something happens.
    7 KB (1,189 words) - 14:16, 12 August 2013
  • Welcome to the Real-Time [[Tech Zones|Tech Zone]] for ELC 2013!! ...ge is dedicated to preserving information and discussions about Linux Real-time from
    5 KB (806 words) - 17:10, 22 February 2013
  • Welcome to the Boot Time [[Tech Zones|Tech Zone]] for ELC 2013!! ...ge is dedicated to preserving information and discussions about Linux Boot Time from
    1 KB (246 words) - 15:37, 13 February 2013
  • ; Summary: Android boot time improvements Android boot time could be dramatically improved by leveraging
    1 KB (188 words) - 08:37, 22 May 2015
  • ; Summary: Real-time GPU computing with RT_PREEMPT for real-time GPU computing. Current GPGPU focuses to improve computation performance,
    883 bytes (124 words) - 11:02, 11 August 2015
  • ...get the evaluation package of proprietary graphics and multimedia without time limit == The evaluation package for Yocto v4.1.0 or later have no time limit.<br/>
    496 bytes (73 words) - 17:17, 16 February 2021

Page text matches

  • | style="width: 25%;" | [[image:Welly1.jpg|link=Boot Time]]<br /> [[Boot Time]] | style="width: 25%;" | [[image:clockface.jpg|link=Real Time]]<br /> [[Real Time]]
    10 KB (1,380 words) - 14:49, 7 June 2023
  • Boot Time includes topics such as measurement, analysis, human factors, initializatio The time that a product takes to boot directly impacts the first perception an end u
    28 KB (4,414 words) - 14:21, 30 June 2022
  • Also, size and bootup time are very important in many consumer electronics products. Therefore, processor speed, boot up time), many embedded systems
    21 KB (3,323 words) - 17:27, 6 January 2014
  • mount time. This significantly reduces both startup time and memory
    2 KB (240 words) - 12:21, 12 October 2012
  • spare time but I'm not making much progress. Proposal is for testing. Another 13 person weeks (half-time) to support CELF members
    7 KB (1,120 words) - 08:25, 8 July 2013
  • ...ng performance, with most applications taking anywhere from 5-40% of their time on the CPU servicing page faults. *This relates to using various compression algorithms for performing run-time compression and decompression of page cache pages, specifically aimed at bo
    8 KB (1,171 words) - 14:17, 4 August 2013
  • This page has information about Real-time usage of Linux. Also this page has information about timing systems for Lin == Real Time Wiki ==
    5 KB (651 words) - 09:55, 28 June 2016
  • ...loyed systems simply by loading the LKM into the kernel shortly after boot time. ...h.ibm.com/secure_systems_department/projects/tcglinux/ TPM-based Linux Run-time Attestation]
    18 KB (2,624 words) - 15:23, 19 September 2023
  • Since version 3.4, gcc offered a -funit-at-a-time option. ...shrink kernel size by ~10% by improving dead code/data elimination at link time. They are being pushed to mainline. Due to a linker [https://bugzilla.redha
    18 KB (2,647 words) - 12:49, 27 November 2023
  • ...oup to identify areas of the Linux kernel requiring work to improve bootup time, and to measure the improvements of changes made by the working group. ...) for the time at which the printk started. The utility program shows the time between calls, or it can show the times relative to a specific message. Thi
    18 KB (2,490 words) - 16:52, 26 January 2011
  • ...ing a good timing overview of kernel procedures, allowing you to see where time is spent in functions and sub-routines in the kernel. ...t value containing nanoseconds (not necessarily relative to any particular time base, but assumed to be monotonically increasing, and relatively frequency-
    12 KB (1,613 words) - 17:00, 10 December 2008
  • |Fast Time Stamp |[[Fast Time Stamp]]
    16 KB (1,842 words) - 09:47, 12 May 2010
  • ...ux kernel have been discontinued. Instead of spending a valuable amount of time carrying patches forward ...rnel version to the next, we chose to focus on a few patches and spend our time trying to get them merged into the mainline kernel.
    6 KB (779 words) - 12:56, 13 July 2014
  • ...allows for running a second real-time operating system on the M4 core for time and security critical tasks. ...ws for running a second hard real time operating system on the M4 core for time and security critical tasks. The module delivers cost effective processing
    100 KB (14,619 words) - 16:47, 6 September 2022
  • ...ing a good timing overview of kernel procedures, allowing you to see where time is spent in functions and (not necessarily relative to any particular time base, but assumed to be monotonically increasing, and relatively frequency-
    17 KB (1,942 words) - 09:24, 15 November 2008
  • [[Category:Boot Time]]
    8 KB (1,190 words) - 13:25, 22 June 2011
  • You can save time during kernel bootup by disabling the console output. The easiest way to d ...ial port or a VGA console during bootup. By disabling console output, the time taken to output the characters (and perform things like software scrolling
    2 KB (334 words) - 05:40, 16 November 2008
  • ...ys until the edge of the next second rollover, in order to ensure that the time value in the kernel is accurate with respect to the RTC. ...ete, and thus introduces up to 1 second of variability in the total bootup time.
    5 KB (885 words) - 05:41, 16 November 2008
  • ...kes a significant percentage of the total bootup time. Almost all of this time is spent busywaiting in the routine <code>ide_delay_50ms()</code>. ...ms()</code> routine provides a substantial reduction in the overall bootup time for the kernel on a typical desktop system. It also has potential for use
    5 KB (829 words) - 05:41, 16 November 2008
  • This page describes the use of Kernel Execute-In-Place as a bootup time reduction technique. ...ement from using this technique depends on the size of the kernel, and the time to load it and decompress it from persistent storage.
    12 KB (1,858 words) - 09:57, 1 July 2014
  • ...drives and IDE interfaces, using a command line argument specified at boot time. The command line argument is "hdx==noprobe" or "idex==noprobe". *measure the time savings from using the patch and the "noprobe" option
    4 KB (584 words) - 05:41, 16 November 2008
  • ...to avoid the cost associated with calibrating loops_per_jiffy at each boot time. ...ps_per_jiffy at kernel compile time, or on the command line at kernel boot time.
    6 KB (996 words) - 10:11, 17 November 2008
  • ...kernel to have their probes execute in parallel threads. One of the most time-consuming parts of the boot up sequence is the probing by device drivers fo ...created by Greg Kroah-Hartman and with it he was able to reduce the bootup time of the kernel on one machine by about 400 milliseconds.
    1 KB (214 words) - 15:02, 1 September 2010
  • *Difficult to estimate maximum memory usage at design time *Execution time < 1 msec
    24 KB (3,466 words) - 17:57, 4 February 2011
  • ...bes optimizations to a large application and to the kernel, to shorten the time required to load and execute an application. ...ation bootup time should be considered to cut down the system total bootup time. The techniques described here are applicable to a large number of embedde
    7 KB (1,083 words) - 17:33, 12 May 2009
  • Here are some rough numbers: Time to run shell script which starts TinyX X server and "xsetroot -solid red", |First time||3.195 seconds||2.035 seconds
    8 KB (1,309 words) - 17:34, 12 May 2009
  • ...default node round-robin approach (because no node info was known at that time), so the pages almost certainly were not allocated from the correct node fo Important MTA events are captured by the run-time creation of Linux Trace Toolkit (LTT) custom events for MTA. The following
    36 KB (6,111 words) - 19:23, 16 March 2015
  • :*This includes the text, data, and BSS segments of the kernel at the time it is loaded. The text and BSS segments will stay the same size for the ke ...nt is not stored in the kernel image because it can be synthesized at boot time by filling a block of memory with zeros. Note also that portions of the ke
    24 KB (3,448 words) - 03:26, 4 February 2017
  • ...computer components, e.g. CPU's, can get hot very quickly but take a long time to cool off. ...rformance value systems compared to laptops and servers. For instance the time it takes to launch a non-critical task may have latencies that would be un
    24 KB (3,864 words) - 14:54, 27 October 2011
  • maximum time to wait. Both are expressed in seconds.
    24 KB (3,743 words) - 09:50, 12 December 2006
  • * SquashFS stores full uid/gids (32 bits), and file creation time It's time to install your new SquashFS-enabled kernel. The instructions below ar
    22 KB (3,493 words) - 14:21, 26 August 2021
  • ...timizations; the init scripts modifications; how to reduce the system boot time using the optimized BusyBox, and to optimize shell scripts for BusyBox. Als The init scripts execution time, i.e. the time interval between the start of the init process and the start of user applic
    22 KB (3,304 words) - 07:44, 29 May 2015
  • determined at boot time by the routine calibrate_delay(), in + time. This is primarily of interest in embedded devices where
    17 KB (2,668 words) - 13:36, 7 August 2015
  • [ 22.141310] Real Time Clock Driver v1.12 [[Category:Boot Time]]
    15 KB (1,749 words) - 03:19, 14 July 2007
  • [[Category:Boot Time]] [[Category:System Size]]
    3 KB (414 words) - 17:35, 12 May 2009
  • !colspan="2"|Boot Time !colspan="2"|Boot Time
    13 KB (1,620 words) - 17:41, 12 May 2009
  • Note that the time information is shown as the delta from one printk to the next. From this r [14.388642 < 0.000036 >] Real Time Clock Driver v1.10e
    7 KB (697 words) - 03:18, 14 July 2007
  • ...Previous versions can add it via a very simple patch. It works for bootup time measurements, or other places where you can just jam in a printk or two. ...during initcalls. Users need to boot with the "initcall_debug" and "printk.time=1" parameters, and run "dmesg | perl scripts/bootgraph.pl > output.svg" to
    4 KB (621 words) - 07:32, 8 March 2016
  • Pre-Linking is a mechanism for linking programs to shared libraries ahead of time. In general, every time an application is run it must have its external symbols resolved - looked u
    4 KB (588 words) - 07:47, 29 May 2015
  • ...isn't used. In this case, using DMA transfer is very efficient to save the time and CPU resources. This feature is important to CELF because it reduces bootup time significantly.
    3 KB (376 words) - 09:27, 15 November 2008
  • One way to reduce bootup time is to run RC scripts in parallel. RC scripts are normally run in sequence Time without change:: [put that here]
    2 KB (282 words) - 03:18, 28 October 2011
  • ;Boot up: The time from power on to user start (the start of user init). ;Cold start: The time from power on to first available use.
    6 KB (985 words) - 20:18, 5 December 2008
  • == Boot Time with various file systems == ...om the light turning from green to red was measured. Also, he measured the time using KFI (from start_kernel() to to_usrspace()).
    7 KB (1,088 words) - 14:42, 10 February 2008
  • ...yet. To sign up for a task related to this HOWTO, please see the [[Bootup Time Howto Task List]]. == Bootup Time Reduction Technique Outline ==
    9 KB (1,279 words) - 18:45, 27 January 2010
  • [[Category:Boot Time]]
    803 bytes (116 words) - 01:10, 14 July 2007
  • ...gram, DirectFB is designed to compile only on x86 Linux. We struggled this time to compile DirectFB for SH-4 Linux and finally we success this cross portin
    16 KB (2,340 words) - 16:35, 20 September 2023
  • * top - provides a dynamic real-time view of a running system, including processes
    4 KB (606 words) - 14:01, 28 July 2010
  • None at this time.
    1 KB (164 words) - 00:14, 28 October 2011
  • Furthermore some boot time reduction can be achieved. ...l see an increase in mount time, as the XIP data is copied to RAM at mount time. However the executables should start faster as no data need to be read fro
    8 KB (1,340 words) - 07:29, 7 April 2009
  • time in practice is about 500 milliseconds. (For examples of observed time, please see the page referred to in the References section below.) This time can be saved by avoiding these steps
    2 KB (374 words) - 21:02, 13 May 2010
  • ** It's time to celebrate and share the new Torizon IDE Extensions development. A new st *'''Online / Real Hybrid''': [[Japan Technical Jamboree 80]] - May 25 (Japan time), 2023 at Nakano Sunplaza
    108 KB (14,496 words) - 01:56, 28 March 2024
  • ...first line of the output). The "-b" option can be used to set a different time base for the timing information." ...st line of output, the final number at the bottom is our total kernel boot time (about 5558 milliseconds).
    7 KB (717 words) - 03:18, 14 July 2007
  • ...19 lines into the output). The "-b" option can be used to set a different time base for the timing information. From this you can easily tell that calibr [[Category:Boot Time]]
    4 KB (336 words) - 03:19, 14 July 2007
  • [ 22.141310] Real Time Clock Driver v1.12 [[Category:Boot Time]]
    15 KB (1,749 words) - 03:19, 14 July 2007
  • *to keep the current time and date up to date, ...e even though there may not be anything for it to do other than update the time and go back to sleep. The Variable Scheduling Timeouts (VST) feature modif
    1 KB (178 words) - 17:48, 20 September 2023
  • Here is what comes out the serial port at boot time:
    7 KB (1,056 words) - 15:49, 13 July 2012
  • ...requency varies per chip, but is typically 10-100MHz TCK (10-100ns per bit time). The description of how JTAG is implemented for a specific device is descr
    3 KB (497 words) - 00:27, 28 June 2021
  • ** EmbeddedICE-RT real-time debug unit * Enhanced real-time debug with EmbeddedICE-RT
    2 KB (267 words) - 12:22, 10 February 2008
  • ...ed by embedded Linux developers including power management, system boot up time, memory leaks, debugging and profiling. Illustrated with examples for both
    1 KB (142 words) - 07:55, 9 May 2010
  • Below is a list of tasks to be worked on for [[Boot-up Time Reduction Howto]] project. [[Category:Boot Time]]
    3 KB (438 words) - 15:16, 24 September 2007
  • This is the specification of [[bootup time]] technologies and features, of the [[Bootup Time Working Group]] of the CE Linux Forum.
    2 KB (280 words) - 17:01, 20 September 2023
  • Below is a list of tasks to be worked on in the Bootup Time Working Group. See also the [[Bootup Time Howto Task List]]
    2 KB (382 words) - 15:09, 21 September 2007
  • [[Category:Boot Time]]
    1 KB (157 words) - 21:04, 13 July 2007
  • :The Bootup Time Working Group shall work to minimize the activation and deactivation times ...dination between the firmware and the OS, work inside the OS to reduce the time to initialize kernel sub-systems and device drivers, and work to increase a
    5 KB (755 words) - 17:01, 20 September 2023
  • == Bootup Time == * Improving Linux Startup Time Using Software Resume (and other techniques) - Hiroki KAMINAGA, Fri. July 2
    5 KB (682 words) - 14:07, 27 October 2011
  • * Time: 7:00 pm to 9:00 pm
    3 KB (426 words) - 14:49, 21 September 2007
  • ...vel of optimization possible, and also the riskiest. It will take a longer time to compile your code with this option, and in fact it should not be used sy == Link-time optimization (LTO) ==
    4 KB (605 words) - 08:44, 18 December 2012
  • ...include saving state to allow later restoration of state at device resume time. ...hat does not preserve SDRAM during suspend generally must reboot at resume time, whereupon device state can be restored from stable storage if needed.
    10 KB (1,506 words) - 21:03, 13 May 2010
  • ...front-end for diff which ignores files with the same size and modification time. This speeds up diffs of large source tree (like the Linux kernel) to save disk space and manipulation time using these `tricks':
    4 KB (630 words) - 02:38, 4 June 2021
  • for Linux at the time when it was still called Unix, AIX, Irix or Solaris. Instead of writing software he now spends most of his time porting existing
    11 KB (1,679 words) - 11:06, 11 April 2012
  • * Bootup time * Meeting real-time constraints
    4 KB (631 words) - 14:08, 27 October 2011
  • | Boot-Time Optimization - results of applying currently available solutions ...river usability in embedded application – Technique to achieve good real-time performance
    10 KB (1,224 words) - 19:54, 3 April 2020
  • * Bootup time * Meeting real-time constraints
    4 KB (666 words) - 14:31, 27 October 2011
  • | Improving startup time using Software Suspend | align="center" | '''Time'''
    7 KB (734 words) - 14:09, 27 October 2011
  • * should be able to fund a part-time person for task of initial implementation ** feature areas: boot time, power management, real time?
    2 KB (331 words) - 04:35, 23 November 2008
  • *** ''Everyone agreed the Media Wiki was the most logical choice at this time for our wiki implementation'' *''Time ran out before we really discussed site organization or site design. Befor
    4 KB (627 words) - 00:21, 28 October 2011
  • for possible use in speeding up bootup time on an embedded device. In our testing ...tation of giving smaller compressed files and about the same decompression time as gzip (but longer compression times)
    5 KB (686 words) - 07:46, 9 May 2011
  • > Until now I 've only recompiled distro kernels, so it's my first time can't know that without looking at them. Basically, any time you
    5 KB (965 words) - 13:05, 26 April 2007
  • ...onds when "hdf=none ide3=noprobe" was specified. Thus the resulting bootup time savings, with
    3 KB (467 words) - 21:03, 13 May 2010
  • - Measure the decrease in total system boot time from running the IDE driver init concurrently running which can take advantage of the time freed up from the busywait conversion.
    4 KB (707 words) - 03:38, 28 October 2011
  • does nothing for the duration of the wait. The time spent in these waits deal of time in repeated calls to ide_delay_50ms() during probe and drive identification
    5 KB (743 words) - 21:03, 13 May 2010
  • a statistical sampling of execution locations over a period of time. Other event been used extensively by the Bootup Time Working Group of CELF to find long delays
    1 KB (233 words) - 02:56, 14 July 2007
  • ...ional embedded Linux development requires high experience and long learing time. Therefore, the usability is the main issue in the development of the embed
    987 bytes (131 words) - 20:02, 12 April 2010
  • - 100 usec accuracy is desired for our current bootup time measurement work for the values to be non-linear, as long as the conversion to time results (sec, nsec)
    12 KB (1,732 words) - 03:36, 28 October 2011
  • == Time Slots == | Time
    4 KB (578 words) - 18:45, 20 September 2023
  • ...s, proposed since 2.6 was released, in terms of switching latency to real time threads and ordinary threads. | bgcolor="#B0FFB0" | '''時間 / Time'''
    12 KB (1,007 words) - 01:37, 18 March 2013
  • - finds time spent locally and in sub-functions, to isolate where time is being spent - generates call tree from kfiboot log, and reports time spent in branches
    3 KB (509 words) - 02:57, 27 October 2011
  • ...proaches,"top-down" and "bottom-up". Only one approach can be chosen at a time.
    7 KB (1,119 words) - 15:37, 27 October 2011
  • by a compile-time constant called HZ. Different platforms Clocksource is also related or the same as the GTOD (Generic time of Day) work by John Stultz that hrtimer framework depends on (as mentioned
    8 KB (1,242 words) - 15:03, 2 October 2017
  • import time # time.sleep(reset_sleep)
    11 KB (1,680 words) - 15:39, 27 October 2011
  • whether setting that variable affects the boot time for the kernel. The purpose of this test is to verify that bootup time can be reduced through use of this configuration
    914 bytes (137 words) - 15:40, 27 October 2011
  • ...ther printk-times can be used from the kernel command line or as a compile-time import time
    18 KB (2,753 words) - 15:40, 27 October 2011
  • This page has some information about the possible location, date, time, * Time:
    8 KB (1,054 words) - 14:10, 27 October 2011
  • In this domain, real-time performance, system size, boot-up time, and power management are areas where critical improvements need to be made
    3 KB (462 words) - 23:31, 27 October 2011
  • ...obile phone environment. This would allow feature developers to spend more time on functionality development and less on porting from one phone to another. ...ssor or single-processor architecture. In the dual-processor model, a real-time operating system might run on the second processor, which would be dedicate
    5 KB (649 words) - 23:20, 27 October 2011
  • ...obile phone environment. This would allow feature developers to spend more time on functionality development and less on porting from one phone to another. ...ssor or single-processor architecture. In the dual-processor model, a real-time operating system might run on the second processor, which would be dedicate
    8 KB (1,092 words) - 23:20, 27 October 2011
  • ...t does a binary search, it basically cuts the commits to test in half each time, and so if you do just five bisections, you'll have cut down the 10,000 com > starting the test + waiting for the lockup takes a fair bit of time
    10 KB (1,734 words) - 13:57, 27 October 2011
  • * Time: 10:45 am to 5:00 pm | Improving startup time using Software Suspend
    3 KB (329 words) - 03:23, 14 July 2007
  • * EmbeddedICE-RT logic for real-time debug * ETM interface for Real-time trace capability with ETM9
    2 KB (240 words) - 12:23, 10 February 2008
  • ....dev. head developments. The head is where fixes get fixed. Takes too much time away from the developers. * Some of the packages have too much build and/or run-time dependencies. Yes, both.
    7 KB (1,076 words) - 00:07, 21 June 2014

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