| 释义 |
access time
access timen. The time required for a computer program or device to locate and retrieve, or to write and store, a piece of data.access time n (Computer Science) computing the time required to retrieve a piece of stored information Thesaurus| Noun | 1. |  access time - (computer science) the interval between the time data is requested by the system and the time the data is provided by the drive; "access time is the sum of seek time and rotational latency and command processing overhead"computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structuresseek time - (computer science) the time it takes for a read/write head to move to a specific data trackinterval, time interval - a definite length of time marked off by two instantslatency, rotational latency - (computer science) the time it takes for a specific block of data on a data track to rotate around to the read/write headcommand overhead, command processing overhead, command processing overhead time, overhead - (computer science) the processing time required by a device prior to the execution of a command |
Translationsaccess time
access time Computing the time required to retrieve a piece of stored information access time[′ak·ses ‚tīm] (computer science) The time period required for reading out of or writing into the computer memory. access time (hardware, storage)The average time interval between astorage peripheral (usually a disk drive or semiconductormemory) receiving a request to read or write a certainlocation and returning the value read or completing the write.access time(1) Memory access time is how long it takes for a character in RAM to be transferred to or from the CPU. Fast RAM chips have an access time of 10 nanoseconds (ns) or less. See SDRAM.
(2) Disk access time is how long it takes to obtain the first data character after initiating a request. It includes the time to move the read/write head to the track (seek time) and time to rotate the platter to the sector (latency). Disk access time is always given as an average, because seek time and latency vary depending on the current position of the head and platter.
Disk vs. SSD
While access times of fast hard disks are typically from 5 to 10 milliseconds, solid state drive (SSD) access times are in the 25 to 100 microsecond range. SSDs are as much as 100 times faster because there is no seek time or latency associated with flash memory storage. However, access times for all storage types are only one metric. Channel speed (transfer rate) and caching contribute significantly to overall storage performance. See cache, seek time and latency.MedicalSeelatencyAccess Time
Access TimeIn telecommunications, the delay between the time a request is made on a system and the time the system grants the request. As technology advances, access time is generally reduced.EncyclopediaSeea/taccess time
Related to access time: seek timeWords related to access timenoun (computer science) the interval between the time data is requested by the system and the time the data is provided by the driveRelated Words- computer science
- computing
- seek time
- interval
- time interval
- latency
- rotational latency
- command overhead
- command processing overhead
- command processing overhead time
- overhead
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