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Tagged queuing is a method for allowing a hardware device or controller to process commands received from a device driver out of order. It requires that the device driver attaches a tag to each command which the controller or device can later use to identify the response to the command.
Tagged queueing can speed up processing considerably if a controller serves devices of very different speeds, such as an SCSI controller serving a mix of CD-ROM drives and high-speed disks. In such cases if a request to fetch data from the CD-ROM is shortly followed by a request to read from the disk, the controller doesn't have to wait for the CD-ROM to fetch the data, it can instead instruct the disk to fetch the data and return the value to the device driver, while the CD-ROM is probably still seeking.
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Taggedqueuing is a method for allowing a hardware device or controller to process commands received from a device driver out of order. It requires that...
Tagged Command Queuing (TCQ) is a technology built into certain ATA and SCSI hard drives. It allows the operating system to send multiple read and write...
its queue using, for instance, the elevator algorithm to minimize the mechanical movement. Native Command Queuing (NCQ) in Serial ATA (SATA) Tagged Command...
server-type applications. Native Command Queuing was preceded by Parallel ATA's version of Tagged Command Queuing (TCQ). ATA's attempt at integrating TCQ...
called a Post tag machine (not to be confused with Post–Turing machines)—briefly, a finite-state machine whose only tape is a FIFO queue of unbounded length...
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Completely Fair Queuing (CFQ) is an I/O scheduler for the Linux kernel which was written in 2003 by Jens Axboe. CFQ places synchronous requests submitted...
the tag-indexed scheme, the issue queues wait for non-ready operands to see matching tag broadcasts. Unlike the tag-indexed scheme, matching tags cause...
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command queuing and reordering commonly called either Tagged Command Queuing (TCQ) or Native Command Queuing (NCQ). Many consumer SATA HDDs either cannot do...
science, an input queue is a collection of processes in storage that are waiting to be brought into memory to run a program. Input queues are mainly used...
may be one of a set of types Tagged union (also called a variant, discriminated union or sum type), a union with a tag specifying which type the data...
of a virtually tagged cache, and the simple software interface of a physically tagged cache. It bears the added cost of duplicated tags, however. Also...
due to its over 1,700 tags. When browsing or searching for a tag, any work which has used the tag, or determined related tags, will appear in the search...
Linux anticipatory scheduler may reduce performance on disks using Tagged Command Queuing (TCQ), high performance disks, and hardware RAID arrays. An anticipatory...
Guests entered the queue on the left side of the Wonders of Life Dome. If the attraction was in high demand, an extended queue would be utilized, decorated...
its use in the Simple Common Gateway Interface (SCGI) and the Quick Mail Queuing Protocol (QMQP) . Netstrings avoid complications that arise in trying to...
signaling rates, and more efficient transfer through an (optional) I/O queuing protocol. Revision 1.0 of the specification was released in January 2003...
over its predecessor was Tagged Command Queuing, a feature that had previously been available only in SCSI drives. Command queuing resulted in a notable...
2013, Tumblr began to filter content in adult-tagged blogs from appearing in search results and tagged displays unless the user was logged in. In February...
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