发明名称 |
STORAGE CONTROLLING APPARATUS, COMPUTER-READABLE RECORDING MEDIUM HAVING STORAGE CONTROLLING PROGRAM STORED THEREIN, AND STORAGE CONTROLLING METHOD |
摘要 |
A storage controlling apparatus includes a processor, wherein the processor: controls a first counter configured to count, among data stored in a cache memory and relating to an access request, a number of data which are not written in storage volumes of a target of the access request, for each storage volume; determines, in response to reception of a first access request, whether or not a first ratio of a counter value of the first counter to a number of data allocated already to the cache memory into a first storage volume exceeds a first threshold value, the counter value of the first counter corresponding to the first storage volume which is a target of the first access request; and performs a write back process of data from the cache memory into the first storage volume where the first ratio exceeds the first threshold value. |
申请公布号 |
US2017068618(A1) |
申请公布日期 |
2017.03.09 |
申请号 |
US201615249515 |
申请日期 |
2016.08.29 |
申请人 |
FUJITSU LIMITED |
发明人 |
Akiyama Shigeru;Ogasawara Yasuhiro;Matsuda Tsukasa;Nishi Hidetoshi;Kosokabe Hitoshi |
分类号 |
G06F12/0804;G06F12/0871;G06F12/123;G06F12/0868 |
主分类号 |
G06F12/0804 |
代理机构 |
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代理人 |
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主权项 |
1. A storage controlling apparatus, comprising:
a processor; wherein the processor: controls a first counter configured to count, among data stored in a cache memory and relating to an access request, a number of data which are not written in storage volumes of a target of the access request, for each storage volume; determines, in response to reception of a first access request, whether or not a first ratio of a counter value of the first counter to a number of data allocated already to the cache memory into a first storage volume exceeds a first threshold value, the counter value of the first counter corresponding to the first storage volume which is a target of the first access request; and performs a write back process of data from the cache memory into the first storage volume where the first ratio exceeds the first threshold value. |
地址 |
Kawasaki-shi JP |