Aggressive Superpage Support with the Shadow Memory and the Partial-Subblock TLB

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While superpages are an efficient solution to increase TLB reach, strong requirements for using superpages hinder the actual utilization. Two previous solutions, the partial-subblock TLB and the shadow memory were proposed to release the requirements. The partial-subblock TLB releases only a small portion of the requirements. The shadow memory releases most of the requirements but introduces other serious problems. We propose a hybrid scheme which integrates both the shadow memory and the partial-subblock TLB, thereby enjoying the benefits inherited from both sides. The hybrid scheme has as high a superpage utilization as the shadow memory, and avoids most of the problems in the shadow memory by virtue of the partial-subblock TLB, The experiment shows that the hybrid scheme outperforms the previous schemes though its hardware cost and overhead are considered. (C) 2001 Elsevier Science B.V. All rights reserved.
Publisher
Elsevier Science Bv
Issue Date
2001-07
Language
English
Article Type
Article
Keywords

PROCESSORS

Citation

MICROPROCESSORS AND MICROSYSTEMS, v.25, no.7, pp.329 - 342

ISSN
0141-9331
URI
http://hdl.handle.net/10203/81397
Appears in Collection
RIMS Journal Papers
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