US5023774A
Expired / Lapsed
US
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Data I/O transaction method and system
Assignee: Hitachi Software Engineering Co Ltd
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Filing: 1988-11-08
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Granted: 1991-06-11
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Expires: 2008-11-08
Abstract
Abstract After passing through the process in which the number of one page I/O requests generated in a certain unit time period, the number of multiple pages I/O requests, and the number of pages required at each of the multiple pages I/O request are input, the quantity of the I/O requests generated in the above-described unit time period is calculated in accordance with the thus-input values. The unit (the number of pages) for a multiple pages I/O actually performed by one time operation of the I/O control device corresponding to the multiple pages I/O request from users is determined in accordance with the user's instruction or specific criterion for the system based on the result of the above-described calculation, the performance of the CPU, the performance of the I/O control device, the performance of the DASD (Direct Access Storage Decive), and to which DASD each of I/O requests corresponds. The result of this determination is employed as the unit (the number of pages) for the multiple pages I/O performed by one time operation of the I/O control device. In case of the specific criterion for the system, the structure may be constituted in such a manner that it can be automatically changed in accordance with the state of change in the quantity of the I/O request.
Inventors
- 👤 Naohumi Sakai
- 👤 Masashi Tsuchida
- 👤 Kazuhiko Ohmachi
- 👤 Yasuhiro Imai
- 👤 Toshio Honma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:26
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/10; G06F13/12; G06F13/122
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
168 words
A data I/O transaction system comprising: means for counting an accumulated quantity of I/O requests generated in a predetermined certain unit time period based on a number of one page I/O requests generated in said predetermined certain unit time period, an accumulated number of multiple pages I/O requests generated in said predetermined certain unit time period, and a number of pages for each of the multiple pages I/O requests; means for dynamically changing and fixing said number of pages for a multiple pages I/O request in correspondence with a multiple pages I/O request from a user in accordance with said accumulated quantity, said accumulated number and said number of pages counted by said counting means in such a manner that said number of pages is decreased when the accumulated quantity is increased, while it is increased when the accumulated quantity is decreased; and means capable of actually performing I/O transactions of said one page I/O requests and said multiple pages I/O requests by said changing and fixing means.
Claim 2
Dependent Claim
168 words
A data I/O transaction system comprising: means for counting an accumulated quantity of I/O requests generated in a predetermined certain unit time period based on a number of one page I/O requests generated in said predetermined certain unit time period, an accumulated number of multiple pages I/O requests generated in said predetermined certain unit time period, and a number of pages for each of the multiple pages I/O requests; means for dynamically changing and fixing said number of pages for a multiple pages I/O request in correspondence with a multiple pages I/O request from a user in accordance with said accumulated quantity, said accumulated number and said number of pages counted by said counting means in such a manner that said number of pages is decreased when the accumulated quantity is increased, while it is increased when the accumulated quantity is decreased; and means capable of actually performing I/O transactions of said one page I/O requests and said multiple pages I/O requests by said changing and fixing means.
Claim 3
Dependent Claim
39 words
A data I/O transaction system according to claim 1, further comprising: means for inputting said predetermined certain unit time period by a specification instructed by a user, wherein said specification can be changed during the operation of said system.
Claim 4
Dependent Claim
32 words
A data I/O transaction system according to claim 1, wherein said unit time period is automatically determined, as a specific unit time period to improve the performance speed of said transaction system.
Claim 5
Dependent Claim
31 words
A data I/O transaction system according to claim 1, further comprising: means for determining said number of pages for said multiple pages I/O request by a specification given by a user.
Claim 6
Dependent Claim
82 words
A data I/O transaction system according to claim 1, further comprising: means for determining said number of pages for said multiple pages I/O request in accordance with a specific criterion of said transaction system, wherein said criterion is determined based on the accumulated quantity, the accumulated number, the performance speed of a central processing unit, the performance speed of an I/O control device, and the performance speed of said I/O device, and wherein said I/O request is performed to said I/O device.
Claim 7
Dependent Claim
83 words
A data I/O transaction system according to claim 1, wherein said means for counting comprises: means for counting said unit time period according to a specification instructed by a user; means for inputting the accumulated number of one page I/O requests, the accumulated number of multiple pages I/O requests, and the number of pages for each of said multiple pages I/O requests; and means for calculating the performance speed of the I/O requests in said unit time period based on the thus-input values.
Claim 8
Dependent Claim
38 words
A data I/O transaction system according to claim 1, wherein said accumulated quantity of one page I/O request comprises: accumulated number of pages of the one page I/O request and the time required to transact said I/O request.
Claim 9
Dependent Claim
46 words
A data I/O transaction system according to claim 1, wherein said means capable of actually performing the I/O transaction comprises: means for employing a number of pages for multiple pages I/O requests derived from said accumulated quantity of the one page I/O requests and said criterion.
Claim 10
Dependent Claim
172 words
A data I/O transaction method comprising: a step for counting an accumulated quantity of I/O requests generated in a predetermined certain unit time period based on a number of one page I/O requests generated in said unit time period, an accumulated number of multiple pages I/O requests generated in said unit time period, and a number of pages required at each of said multiple pages I/O requests; a step for dynamically changing and fixing said number of pages for a multiple pages I/O request in correspondence with a multiple pages I/O request from a user in accordance with said accumulated quantity, said accumulated number and said number of pages counted by said counting step in such a manner that said number of pages is decreased when the accumulated quantity is increased while the number of pages is increased when the accumulated quantity is decreased; and a step capable of actually performing the I/O transactions of said one page I/O requests and said multiple page I/O requests by said changing and fixing step.
Claim 11
Dependent Claim
172 words
A data I/O transaction method comprising: a step for counting an accumulated quantity of I/O requests generated in a predetermined certain unit time period based on a number of one page I/O requests generated in said unit time period, an accumulated number of multiple pages I/O requests generated in said unit time period, and a number of pages required at each of said multiple pages I/O requests; a step for dynamically changing and fixing said number of pages for a multiple pages I/O request in correspondence with a multiple pages I/O request from a user in accordance with said accumulated quantity, said accumulated number and said number of pages counted by said counting step in such a manner that said number of pages is decreased when the accumulated quantity is increased while the number of pages is increased when the accumulated quantity is decreased; and a step capable of actually performing the I/O transactions of said one page I/O requests and said multiple page I/O requests by said changing and fixing step.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-10 | 1994-12-10 | 1995-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-10 | 1998-12-10 | 1999-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-10 | 2002-12-10 | 2003-06-11 | $7700.00 | Window Closed / Lapsed |