释义 |
rotational latency ThesaurusNoun | 1. | 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 headlatencycomputer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structuresaccess 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"interval, time interval - a definite length of time marked off by two instants |
rotational latency
rotational latency[rō′tā·shən·əl ′lāt·ən·sē] (computer science) The time required, following an order to read or write information in disk storage, for the location of the information to revolve beneath the appropriate read/write head. rotational latencyThe time for the start of the required sector on a disk toappear underneath the read/write head. The worst case iswhere it has just passed the head when the request isreceived. For a disk drive with N heads per surface,rotating at R revolutions per minute, the average rotationallatency will be
L = 30/NR seconds.
Rotational latency is one component of access time.rotational latency Related to rotational latency: seek timeSynonyms for rotational latencynoun (computer science) the time it takes for a specific block of data on a data track to rotate around to the read/write headSynonymsRelated Words- computer science
- computing
- access time
- interval
- time interval
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