METHOD AND SYSTEM FOR ADAPTIVE PRE-FETCHING OF PAGES INTO A BUFFER POOL
First Claim
1. A method for pre-fetching one or more pages from a database stored on a data storage device, the one or more pages being pre-fetched in a corresponding buffer pool of one or more buffer pools, the method comprising:
- initiating the pre-fetching of the one or more pages from the database stored on the data storage device into the corresponding buffer pool of the one or more buffer pools, wherein the pre-fetching being done at any instant of time,enabling a decision for pre-fetching the one or more pages from the database to the buffer pool of the one or more buffer pools based on a calculated probability score; and
fetching the one or more pages asynchronously from the database into the buffer pool of the one or more buffer pools based on the decision.
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Abstract
The present disclosure provides a method for pre-fetching one or more pages from a database stored on a data storage device is provided. The one or more pages are pre-fetched in a corresponding buffer pool of one or more buffer pools. The method includes initiating the pre-fetching of the one or more pages from the database stored on the data storage device into the corresponding buffer pool of the one or more buffer pools, enabling a decision for pre-fetching the one or more pages from the database to the buffer pool of the one or more buffer pools based on a calculated probability score and fetching the one or more pages asynchronously from the database into the buffer pool of the one or more buffer pools based on the decision. The pre-fetching is done at any instant of time.
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Citations
20 Claims
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1. A method for pre-fetching one or more pages from a database stored on a data storage device, the one or more pages being pre-fetched in a corresponding buffer pool of one or more buffer pools, the method comprising:
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initiating the pre-fetching of the one or more pages from the database stored on the data storage device into the corresponding buffer pool of the one or more buffer pools, wherein the pre-fetching being done at any instant of time, enabling a decision for pre-fetching the one or more pages from the database to the buffer pool of the one or more buffer pools based on a calculated probability score; and fetching the one or more pages asynchronously from the database into the buffer pool of the one or more buffer pools based on the decision. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for pre-fetching one or more pages from a database stored on a data storage device, the one or more pages being pre-fetched in a corresponding buffer pool of one or more buffer pools, the method comprising:
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receiving a request from a user in form of a query, wherein the request being received for reading data from the database stored on the data storage device and wherein the request being received in real time; initiating the pre-fetching of the one or more pages from the database stored on the data storage device into the corresponding buffer pool of the one or more buffer pools based on the received request, wherein the pre-fetching being done by reading the one or more pages from the database to the buffer pool of the one or more buffer pools; enabling a decision for pre-fetching the one or more pages from the database to the buffer pool of the one or more buffer pools, wherein the decision for pre-fetching being taken based on the calculated probability score; and fetching the one or more pages synchronously from the database into the buffer pool of the one or more buffer pools based on the decision. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A computer-program product for pre-fetching one or more pages from a database stored on a data storage device, the one or more pages being pre-fetched in a corresponding buffer pool of one or more buffer pools, comprising:
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a computer readable storage medium having a computer program stored thereon for performing the steps of; initiating the pre-fetching of the one or more pages from the database stored on the data storage device into the corresponding buffer pool of the one or more buffer pools, wherein the pre-fetching being done at any instant of time, enabling a decision for pre-fetching the one or more pages from the database to the buffer pool of the one or more buffer pools based on a calculated probability score; and fetching the one or more pages asynchronously from the database into the buffer pool of the one or more buffer pools based on the decision. - View Dependent Claims (19, 20)
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Specification