Invention Grant
US07805576B2 Information processing system, information processing board, and method of updating cache tag and snoop tag
有权
信息处理系统，信息处理板，缓存标签和窥探标签更新方法
- Patent Title: Information processing system, information processing board, and method of updating cache tag and snoop tag
- Patent Title (中): 信息处理系统，信息处理板，缓存标签和窥探标签更新方法
-
Application No.: US11740984Application Date: 2007-04-27
-
Publication No.: US07805576B2Publication Date: 2010-09-28
- Inventor: Yuka Hosokawa , Takaharu Ishizuka , Makoto Hataida , Toshikazu Ueki
- Applicant: Yuka Hosokawa , Takaharu Ishizuka , Makoto Hataida , Toshikazu Ueki
- Applicant Address: JP Kawasaki
- Assignee: Fujitsu Limited
- Current Assignee: Fujitsu Limited
- Current Assignee Address: JP Kawasaki
- Agency: Staas & Halsey LLP
- Priority: JP2006-222439 20060817
- Main IPC: G06F12/08
- IPC: G06F12/08
Abstract:
In an information processing system loaded with a CPU having cache and a system controller having a copy of a tag of the cache (snoop tag), and the CPU not issuing replacement information about the cache tag, the number of WAYs of the snoop tags in the system controller is larger than the number of WAYs of the cache tags in the CPU to reduce a cache miss rate and suppress the degradation of performance by suppressing excess replacement of the cache tags in the CPU.
Public/Granted literature
Information query
