Title:
データをキャッシュする技術
Document Type and Number:
Japanese Patent JP5083757
Kind Code:
B2
Abstract:
To ensure efficient access to a memory whose writing process is slow. There is provided a storage device for caching data read from a main memory and data to be written in the main memory, comprises a cache memory having a plurality of cache segments, one or more cache segments holding data matching with data in the main memory being set in a protected state to protect the cache segments from a rewrite state, an upper limit of a number of the one or more cache segments being a predetermined reference number; and a cache controller that, in accordance with a write cache miss, allocates a cache segment selected from those cache segments which are not in the protected state to cache write data and writes the write data in the selected cache segment.
Inventors:
Nobuyuki Harada
Takeo Nakata
Takeo Nakata
Application Number:
JP2007110453A
Publication Date:
November 28, 2012
Filing Date:
April 19, 2007
Export Citation:
Assignee:
INTERNATIONAL BUSINESS MASCHINES CORPORATION
International Classes:
G06F12/08; G06F12/12
Domestic Patent References:
| JP2003186743A | ||||
| JP6309231A | ||||
| JP2003316648A | ||||
| JP2005301387A | ||||
| JP2005149290A | ||||
| JP6282488A |
Attorney, Agent or Firm:
Takeshi Ueno
Tasaichi Tanae
Yoshihiro City
Hiroshi Sakaguchi
Tasaichi Tanae
Yoshihiro City
Hiroshi Sakaguchi