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	Read-copy-update - Wikipedia, the free encyclopedia
		RCU can be put to a number of other tasks, including dynamically changing NMI (Non-Maskable interrupt) handlers and implementing lazy barriers, but it is most frequently used as replacement for reader-writer locking.
		RCU is available in a number of operating systems, including version 2.6 of the Linux kernel.
		RCU is also the topic of one of the claims in the SCO v.
	en.wikipedia.org /wiki/RCU (1991 words)

	Paul E. McKenney: Read-Copy Update (RCU)
		July 2006 "Extending RCU for Realtime and Embedded Workloads" with Dipankar Sarma, Ingo Molnar, and Suparna Bhattacharya at OLS'2006, and corresponding presentation.
		RCU was thus fully functional in 2.5.45 and later Linux kernels, just in time for the Halloween functionality freeze.
		The Reiser4 filesystem uses RCU to defer freeing of jnodes.
	www.rdrop.com /users/paulmck/RCU (603 words)

	Reader-Writer-Locking/RCU Analogy
		Although RCU has been used in a great many interesting and surprising ways, one of the most straightforward is as a replacement for reader-writer locking.
		When changing to RCU, write-side reader-writer locking code that modifies list elements in place must often be restructured to prevent read-side RCU code from seeing the data in an inconsistent state.
		RCU has also been used as a lazy barrier synchronization mechanism, as a mode-change control mechanism, as well as for more sophisticated list maintenance.
	www.usenix.org /events/usenix03/tech/freenix03/full_papers/arcangeli/arcangeli_html/node7.html (855 words)

	Kernel Korner - Using RCU in the Linux 2.5 Kernel \| Linux Journal (Site not responding. Last check: 2007-10-26)
		RCU is the best option overall as long as fewer than about one-third of the accesses are updates.
		The trick is RCUs reading CPUs are not permitted to block while traversing the data structure, the same as when CPUs holding a spinlock or rwlock are not permitted to block.
		Although RCU has been used in many interesting and surprising ways, one of the most straightforward uses is as a replacement for reader-writer locking.
	www.linuxjournal.com /article.php?sid=6993 (3040 words)

	LWN: Patch: Real-Time Preemption and RCU
		This means that the real-time preemption variant of RCU is subject to deadlock conditions that "classic" RCU is immune to.
		Since RCU is used from softirq state, a realtime implementation must either eliminate softirq and interrupt states, eliminate use of RCU from these states, or make RCU callable from these states.
		RCU permits a read-side critical section to acquire the corresponding write-side lock.
	lwn.net /Articles/128228 (2457 words)

	Scaling dcache with RCU
		RCU (read-copy update), a synchronization technique optimized for read-mostly data structures, recently was added to the Linux 2.6 kernel.
		The 2.6 dcache is but one step along the road to RCU; the goal for 2.7 is to walk the entire path without acquiring any locks.
		Figure 9 shows the performance of a multiuser benchmark running on a Linux 2.5.59 kernel patched to use RCU in the directory-entry cache compared to the performance of an unpatched kernel.
	www.linuxjournal.com /node/7124/print (2768 words)

	Documentation
		Dell recommends that you run the RCU from a diskette because it is not compatible with all operating systems.
		After the RCU has configured all your Plug and Play and PCI expansion cards, you can use the utility to lock the configuration of your Plug and Play and PCI expansion cards so that they are always assigned the same resources.
		It is extremely unusual for the RCU to fail in resolving a resource conflict between two PCI expansion cards.
	support.dell.com /support/edocs/systems/pe6400/en/ug/conf.htm (2142 words)

	LKML: Christoph Lameter: Move struct file RCU handling into the slab allocator?
		Excessive number of RCU callbacks can be generated causing long RCU queues that in turn cause long latencies.
		A close followed by another open is very fast with the RCU less approach because the last freed object is returned by the slab allocator that is still cache hot.
		RCU free means that the object is not immediately available again.
	lkml.org /lkml/2006/6/16/144 (463 words)

	an RCU chat room? (Site not responding. Last check: 2007-10-26)
		RCU is primarily here to serve as a way for RC'ers to exchange info and resources.
		I think this is the greatest stumbling block to chat...if it don't load from the RCU webpage it might be "those other guys".
		I would like to see RCU sponsor a chat, I think we have enough moderators to keep an eye on it.
	www.rcuniverse.com /forum/tm.asp?m=959823 (1868 words)

	RCU Implementation
		The performance of RCU is critically dependent on an efficient implementation of the
		The more efficient the implementation, the greater the number of situations that RCU may profitably be applied to.
		However, grace-period latency is also an important measure of performance - while CPU overhead negates the performance benefits of RCU, excessively long grace-period latencies can result in all available memory queued up waiting for a grace period to end.
	www.usenix.org /event/usenix03/tech/freenix03/full_papers/arcangeli/arcangeli_html/node8.html (667 words)

	Redwood Credit Union \| About RCU
		RCU Services Group (RCUSG) is a wholly-owned subsidiary of RCU whose products are not federally insured, not obligations of the Credit Union and may lose value.
		Financial advisors are employees of RCU Services Group and are registered through CFS.
		All RCU Member accounts are insured up to $100,000 by the National Credit Union Administration (NCUA), an agency of the Federal Government.
	www.redwoodcu.org /site/about_rrewards.html (555 words)

	LWN: Patch: RCU torture testing
		This is needed due to the continued changes to RCU infrastructure to accommodate dynamic ticks, CPU hotplug, and so on.
		One could argue that it would be good to have +multiple writers, but Linux uses RCU heavily enough that you will get +write-side contention whether you want it or not.
		If testing an RCU implementation with +preemptible read-side critical sections, make sure to spawn at least +two /proc/rcutr instances for each CPU.
	lwn.net /Articles/154107 (1122 words)

	MDT Software - World Leader in Manufacturing Change Management Software
		RCU addresses the growing need for change management of the software installed on plant floor computers.
		With RCU, you can perform remote installation and updates of software and dramatically reduce the number of user actions required for an upgrade.
		RCU helps you keep your site’s critical automation control software up to date and dramatically reduces human resource demands and shortens restoration time when failures occur.
	www.mdtsoft.com /products/rcu (127 words)

	Royal Credit Union
		If you believe you may have fallen victim to this scam please contact the IRS at 1-800-829-1040 or file a complaint at www.ic3.gov.
		As a Member of RCU, we can help you realize your dreams buy your first home...
		It's your commitment to RCU and your belief in the Credit Union that makes it work for all of us.
	www.rcu.org (310 words)

	Chief Delphi - RCU...
		There are 17 girls signed up to represent the RCU at 6 regionals, so if you're wondering if the RCU will be meeting at a regional near you, let me know and I will post a list.
		The RCU has grown to be really big and sucessful, I don't think anything would have happened with out Jess or Kristen.
		It would be a great way of promoting the RCU and enlighten all as to what the RCU does.
	www.chiefdelphi.com /forums/showthread.php?t=1165 (511 words)

	TM RCU and Keyboard (Site not responding. Last check: 2007-10-26)
		The range of the keyboard and RCU is specified and tested at 30 feet - actual range may be further on new batteries.
		Battery life for the RCU is expected to be 7 months.
		There is not a low battery indicator on either the RCU or keyboard.
	www.vtel.com /Support/galaxy/galaxy_rcu_and_keyboard.htm (429 words)

	[RFC][PATCH] More comment improvements for RCU primitives \| Linux \| Kernel
		RCU patches, which I will fix when I incorporate feedback.
		+ * RCU read-side critical sections may be nested.
		RCU does not care how the writers keep out of each
	www.gossamer-threads.com /lists/linux/kernel/456046 (746 words)

	RCU Services Group, Your Auto and Insurance Partner
		At RCU Auto Services, we pride ourselves on our ability to provide customers with the ultimate buying experience.
		Unexpected events and life occurrences can pose an instant threat to the financial well being of you and your family.
		RCU Insurance Services will work with you to develop a plan that provides peace of mind and security based on your needs and goals.
	www.rcuservicesgroup.com (160 words)

	[No title] (Site not responding. Last check: 2007-10-26)
		I removed all the RCU implementation dependent stats (mostly needed for debugging) and retained only the part that was very generic in nature - # of RCU requests and # of actual RCU updates for each CPU.
		This will allow us to monitor the health of the RCU subsystem and such things have been extremely useful for me to investigate problems.
		It indicates the number for RCU requests and actual +updates for every CPU.
	www.kernel.org /pub/linux/kernel/people/akpm/patches/2.6/2.6.0-test2/2.6.0-test2-mm1/broken-out/rcu-stats.patch (227 words)

	SCO suit now seeks $3 billion from IBM \| CNET News.com
		The amended complaint includes an IBM copyright on the RCU technology that names the an engineer as the author, with work "based on a Dynix/ptx implementation by Paul Mckenney (sic)." Dynix/ptx was Sequent's version of Unix for servers with multiple Intel processors.
		And the Linux Scalability Effort's Web site says that RCU patches are "based on original DYNIX/ptx code (released by IBM under GPL)"--the GPL referring to the General Public License that covers Linux.
		Torvalds accepted RCU into the Linux kernel in October 2002.
	news.com.com /2100-1016-1017965.html?tag=nl (1218 words)

	Revelar: Revelar Connection Utility (RCU) and Notable!
		The Revelar Connection Utility (RCU) gives you a live link between your Newton PDA and your Macintosh computer.
		If the RCU connect window on the Newton is in the way, just close it.
		As of July, 1999, RCU for Windows is no longer technically supported, as it is not Y2K compliant.
	www.revelar.com /rcu.html (703 words)

	UW-Eau Claire Foundation Receives RCU Gift
		EAU CLAIRE — RCU Services Corp. has contributed $100,000 through the University of Wisconsin-Eau Claire Foundation to help pay for installation of artificial turf and a new scoreboard at the Carson Park football field.
		If all $800,000 needed is not raised by that time to allow completion of the project for the fall 2004 football season, the commitment of student funds would be reconsidered.
		RCU Services Corp. is an area provider of insurance and investment services.
	www.uwec.edu /NewsBureau/release/2004/04-01/0127rcu.htm (414 words)

	Linux-Kernel Archive: [PATCH] New Read-Copy Update patch
		No RCU, no overhead other than the context switch counter increment.
		This will be invoked as soon + * as all CPUs have performed a context switch or been seen in the + * idle loop or in a user process.
		It runs at an absurdly high priority so + * that it is not starved out by the scheduler thereby holding + * up RC updates.
	www.ussg.iu.edu /hypermail/linux/kernel/0202.0/0886.html (1188 words)

	RCU: Home (Site not responding. Last check: 2007-10-26)
		“Girls in the RCU are people that I look up to and I hope to be just like them when I get older.
		The RCU advocates the involvement of females in FIRST.
		It is the mission of the RCU to inspire girls of all ages to value science, engineering and technology.
	www.robotchicksunion.org (76 words)

	AA :: Index
		This is only for logging into the RCU program from AASM an example is your login here on the America's Army forums is separate from your America's Army Game login.
		If you are running both the RCU and AASM from the same pc then you can use 127.0.0.1 or your pc's internal ip address like I have it in my server setting 192.168.200.50.
		It will seem like it is hanging for a second while it communicates with the RCU program and then drop back to the Remote server view page with the new server information in it.
	forum.americasarmy.com /viewtopic.php?t=156627 (3908 words)

	RSA Security - Press Release - RCU Strengthening Online Services Security with Cyota’s Internet Banking Authentication
		Royal Credit Union, one of the largest credit unions in Wisconsin, is taking a proactive approach to this matter and is proud to announce that it has selected Cyota, a leading provider of authentication and anti-fraud solutions for financial institutions, to provide strong authentication for its Members.
		RCU will implement Cyota’s eSphinx Risk Based Authentication solution and eStamp, Cyota’s reverse authentication solution using watermarks, for RCU eBranch, its online account access service.
		RCU, Royal Credit Union, is a federally insured credit union serving over 102,000 Members with 11 full service offices in Eau Claire, Chippewa Falls, Whitehall, Rice Lake, and Colby.
	www.rsasecurity.com /press_release.asp?doc_id=6423 (573 words)

	[PATCH] Yet another RCU documentation update \| Linux \| Kernel
		The whole point of RCU is to permit readers to run without
		RCU read-side critical section causes no harm other than
		RCU applied to networking data structures that may be subjected
	www.gossamer-threads.com /lists/linux/kernel/570230 (4483 words)

	Revelar: RCU ADF Files
		The Revelar Connection Utility (RCU) gives developers the ability to write an "ADF" file in just a few hours which allows their data (soups) to be accessed by RCU.
		The "ADF" stands for "application definition format," and is a text file that tells RCU how to display, edit, and import/export the data.
		Upon connection, RCU's application menu on the desktop computer will contain the name of the Newton application.
	www.xmission.com /~revelar/adf.html (556 words)

	Amazon.com: RCU (Site not responding. Last check: 2007-10-26)
		Ta850 Dc Chassis Bundle with psu And Rcu by ADTRAN
		Vicksburg companies put community college RCU to work: An article from: The Mississippi Business Journal by Kelly Ingebretsen (Mar 26, 2001)
		Ta850 Ac Chassis Bundle with psu Rcu and AC Charger by ADTRAN
	www.amazon.com /s?ie=UTF8&search-alias=aps&keywords=RCU&page=1 (259 words)

	RCU Magazine Review - Warehouse Hobbies Enforcer Super G
		I recently got bit by the RC boating bug this past year with several glow and electric powered sport boats in my dock.
		The sleek looks complemented by the massive power of the Zenoah G230RC engine is sure to give you a little shock and awe factor at your local boating spot.
		Looks like it is time to put my other boats in the RCU Marketplace.
	rcuniverse.com /magazine/article_display.cfm?article_id=270 (3167 words)

	RCU Charity Classic
		RCU and the Indianhead Track Club invite you to the Twelfth Annual RCU Charity Classic.
		Corporate and "in kind" donations for the RCU Charity Classic will be recognized with a large Corporate Donor sign at the event, in the race results mailed to all participants, and in the next issue of RCU's newsletter, the Royal Clarion.
		Please support the area businesses that are graciously giving to the charities benefiting from this event.
	www.raceberryjam.com /rcu.html (365 words)

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