Information processing system and method of allocating I/O...

Details Information processing system and method of allocating I/O... Information processing system and method of allocating I/O...

2011-01-18

2011-01-18

Tseng, Cheng-Yuan (Department: 2184)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output access regulation

C710S040000, C710S058000

Reexamination Certificate

active

07873759

ABSTRACT:
Provided is an information processing system that communicates with a storage apparatus through a plurality of paths Pi(i=1 to n, where n is a total number of the paths), and that issues an I/O to the storage apparatus through one of the paths Pi. The information processing system sets weights Wifor the respective paths Pi; obtains an I/O issue interval diof each of the paths Piby dividing a sum total ΣWiof the weights Wiby the weight Wiset for the path Pi; obtains I/O issue timings ti(m)of each of the paths Piby using the following equation: ti(m)=di/C+m·di(m=0, 1, 2, . . . ) (where C is a constant); and issues the I/Os to the paths Piin an order corresponding to the an order of the I/O issue timings ti(m) chronologically arranged.

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