Title:
STORAGE APPARATUS AND DATA PROCESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2014/057518
Kind Code:
A1
Abstract:
An object is to raise the CPU cache hit rate and improve the I/O processing performance. The controller which executes data I/O processing on an access target volume comprises a CPU and a CPU memory which is connected to the CPU, wherein the CPU is configured from a CPU core and a CPU cache which comprises a temporary area in a portion of a main storage area, wherein the CPU selects memory bus optimization execution processing or cache poisoning optimization execution processing according to an attribute of the access target volume on the basis of an access request and, if the memory bus optimization execution processing is selected, the CPU loads the target data into the CPU core after storing the target data in the main storage area of the CPU cache from the CPU memory, and if the cache poisoning optimization execution processing is selected, the CPU loads the target data into the CPU core after storing the target data in the temporary area of the CPU cache from the CPU memory, and wherein the CPU core checks the target data which was loaded from the main storage area or the temporary area of the CPU cache.
Inventors:
SAKASHITA YUKI (JP)
NONAKA YUSUKE (JP)
KUDO SHINTARO (JP)
NONAKA YUSUKE (JP)
KUDO SHINTARO (JP)
Application Number:
PCT/JP2012/006518
Publication Date:
April 17, 2014
Filing Date:
October 11, 2012
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
G06F3/06; G06F12/08; G06F12/0802; G06F12/0862; G06F12/0866; G06F12/0888; G06F12/12; G06F12/126
Foreign References:
| EP1785876A1 | 2007-05-16 | |||
| US20060155939A1 | 2006-07-13 | |||
| US7181578B1 | 2007-02-20 | |||
| US5625794A | 1997-04-29 | |||
| US20110197011A1 | 2011-08-11 |
Attorney, Agent or Firm:
OHGA, Shinji et al. (Seafort Square Center Building 16F, 2-3-12, HigashiShinagawa, Shinagawa-k, Kanagawa 02, JP)
Download PDF:
Previous Patent: CIRCUIT BREAKER
Next Patent: COLD-ROLLED STEEL SHEET WITH SUPERIOR SHAPE FIXABILITY AND MANUFACTURING METHOD THEREFOR
Next Patent: COLD-ROLLED STEEL SHEET WITH SUPERIOR SHAPE FIXABILITY AND MANUFACTURING METHOD THEREFOR