Invention Grant
- Patent Title: Counter-based victim selection in a cache memory
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Application No.: US15288815Application Date: 2016-10-07
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Publication No.: US09940246B1Publication Date: 2018-04-10
- Inventor: Bernard C. Drerup , Ram Raghavan , Sahil Sabharwal , Jeffrey A. Stuecheli
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Brian F. Russell; Robert Williams
- Main IPC: G06F12/08
- IPC: G06F12/08 ; G06F12/0891 ; G06F12/0864 ; G06F12/0897

Abstract:
In one embodiment, a set-associative cache memory has a plurality of congruence classes each including multiple entries for storing cache lines of data. The cache memory includes a bank of counters, which includes a respective one of a plurality of counters for each cache line stored in the plurality of congruence classes. The cache memory selects victim cache lines for eviction from the cache memory by reference to counter values of counters within the bank of counters. A dynamic distribution of counter values of counters within the bank of counters is determined. In response, an amount counter values of counters within the bank of counters are adjusted on a cache miss is adjusted based on the dynamic distribution of the counter values.
Public/Granted literature
- US20180101478A1 COUNTER-BASED VICTIM SELECTION IN A CACHE MEMORY Public/Granted day:2018-04-12
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