Autonomic input/output scheduler selector

Details Autonomic input/output scheduler selector Autonomic input/output scheduler selector

2007-03-27

2007-03-27

Fleming, Fritz (Department: 2181)

Electrical computers and digital data processing systems: input/

Input/output data processing

Input/output command process

C710S001000, C710S015000, C710S100000, C710S107000, C710S111000, C712S001000, C712S032000, C712S042000, C712S043000

Reexamination Certificate

active

10735428

ABSTRACT:
The automatic selection of an input/output scheduler in a computing system with a plurality of input/output schedulers is disclosed. Each of the plurality of input/output schedulers is mapped against a corresponding desired set of heuristics. Heuristics relating to job requests submitted by processes in the computer system are monitored and analysed. These heuristics may include the number of read and write requests, the ratio of read requests to write requests, input/output throughput, disk utilization and the average time taken for processes to submit subsequent jobs once an initial job completes. The analysed heuristics are compared to the desired sets of heuristics for the plurality of input/output schedulers to select one of the plurality of input/output schedulers.

REFERENCES:
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patent: 6904470 (2005-06-01), Ofer et al.
Andrew S. Tanenbaum; Structured Computer Organization; 1984; Prentice-Hall, Inc.; Second Edition; p. 11.
IEEE Authoritative Dictionary of IEEE Standards Terms; Dec. 2000; Institute of Electronic Engineers; Seventh Edition; p. 599.
Iyer,S. and Druschel, P., “Anticipatory Scheduling: A disk scheduling framework to overcome deceptive idleness in synchronous I/O”,Proceedings of 18thACM Symposium on Operating Systems Principles, Oct. 2001.

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