Out-of-order servicing of read requests with minimal...

Details Out-of-order servicing of read requests with minimal... Out-of-order servicing of read requests with minimal...

2007-06-05

2007-06-05

Shin, Christopher (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output command process

C710S054000, C710S310000

Reexamination Certificate

active

10815899

ABSTRACT:
Various embodiments of the invention relate to an apparatus and method for efficiently implementing out-of-order servicing of read requests originating from an input/output (I/O) interface with minimal additional storage. For example, a number of read entries may be generated from data read requests stored in a first-in-first-out in a first order. The read entries are stored in a storage device and each read entry identifies internal data reads to read data to service the data read request to which the read entry corresponds. A controller coupled to the storage structure may then submit the internal data reads a central arbiter to read data in a second order that is different than the first order. Moreover, the controller also allows the second order to include internal data reads from one read entry, before a completing servicing of another partially serviced read entry, thus providing “simultaneous” servicing of several read entries.

REFERENCES:
patent: 6182192 (2001-01-01), Rovati
patent: 6272600 (2001-08-01), Talbot et al.
patent: 6559850 (2003-05-01), Strongin et al.
patent: 6889295 (2005-05-01), Watts
patent: 6892281 (2005-05-01), Chaudhari et al.
patent: 2004/0024948 (2004-02-01), Winkler et al.
patent: 2004/0111567 (2004-06-01), Anderson et al.

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