Buffer management method using buffer locking mechanism in stora

Details Buffer management method using buffer locking mechanism in stora Buffer management method using buffer locking mechanism in stora

1996-09-13

1998-08-18

Treat, William M.

Data processing: database and file management or data structures

Database design

Data structure types

711163, G06F 1200

Patent

active

057971382

ABSTRACT:
A buffer management method using a buffer locking mechanism in a storage system for supporting a multi-user environment. The buffer hash anchor is acquired with no exclusive latch while allocation of the empty buffer is required to read a desired page into the buffer using a buffer locking chain including buffer locking entries in the form of a list. Page locking is executed only when a buffer associated with a desired page does not exist in the buffer frame chain. Accordingly, there is no interference with transactions requiring access to other pages. It is also possible to prevent the buffer hash anchor from using an exclusive latch for a lengthy period of time due to other transactions concurrently requiring allocation of empty buffers. Therefore, there is no degradation in performance of the entire system. Since the page locking is executed only for a page read from the disk, the overhead required for the page locking is minimized. As a result, management of buffers can be efficiently achieved without unnecessary disk input/output operations, thereby improving the performance of the storage system.

REFERENCES:
patent: 4482956 (1984-11-01), Tallman
patent: 5247672 (1993-09-01), Mohan
patent: 5327556 (1994-07-01), Mohan et al.
patent: 5339427 (1994-08-01), Elko et al.
Dave et al.; A Low-Latency Scalable Locking Algorithm for Shared Memory Multiprocessors; Parallel and Distributed Processing, 1994 Symp.; pp. 10-17.

Affiliated with

Also associated with

Rating

Buffer management method using buffer locking mechanism in stora does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Buffer management method using buffer locking mechanism in stora, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Buffer management method using buffer locking mechanism in stora will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1126492