Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output command process
Reexamination Certificate
2005-07-12
2005-07-12
Gaffin, Jeffrey (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output command process
C710S007000, C710S029000, C710S040000
Reexamination Certificate
active
06917990
ABSTRACT:
Methods and associated structure for improving storage system performance by reducing latency associated with communication medium transactions internal to a storage subsystem. In one aspect of the present invention, an I/O control element associated with a storage system transmits prefetch read requests to an associated storage element of the storage system in response to receipt of a host system request. This allows the storage element to commence data transfer to the I/O element in advance of the I/O element returning the data to the host system. Subsequent transfers of data from the storage element to the I/O element then overlap the transfer of data from the I/O element to the host. In another specific aspect of the present invention, methods and associated structures eliminate latency associated with PCI-X bus split transactions between the front-end (host interface portion) of the I/O element and the back-end (storage element interface) of the I/O element by overlapping the transfer of prefetched data to the host system with continued fetching of subsequent data from the storage element.
REFERENCES:
patent: 5309451 (1994-05-01), Noya et al.
patent: 5740465 (1998-04-01), Matsunami et al.
patent: 6314472 (2001-11-01), Trieu et al.
patent: 6330630 (2001-12-01), Bell
Sadao Ishii, Eiji Yamamoto, Hidenori Hara, Eiji Watanabe, Ahmet M. Hava, Xiaorang Xia, International Power Electronics Conference,“A Vector Controlled High Performance Matrix Converter—Induction Motor Drive”, Apr. 2000, pp. 235-240, Tokyo, Japan.
Gates Dennis E.
Henry Russell J.
Holt Keith W.
Kloeppner John R.
Weber Bret S.
Chen Alan
Duft Bornsen & Fishman LLP
LSI Logic Corporation
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