NDLI: Lock-Free Cuckoo Hashing

Content Provider	IEEE Xplore Digital Library
Author	Nhan Nguyen Tsigas, P.
Copyright Year	2014
Description	Author affiliation: Chalmers Univ. of Technol., Gothenburg, Sweden (Nhan Nguyen; Tsigas, P.)
Abstract	This paper presents a lock-free cuckoo hashing algorithm, to the best of our knowledge this is the first lock-free cuckoo hashing in the literature. The algorithm allows mutating operations to operate concurrently with query ones and requires only single word compare-and-swap primitives. Query of items can operate concurrently with others mutating operations, thanks to the two-round query protocol enhanced with a logical clock technique. When an insertion triggers a sequence of key displacements, instead of locking the whole cuckoo path, our algorithm breaks down the chain of relocations into several single relocations which can be executed independently and concurrently with other operations. A fine tuned synchronization and a helping mechanism for relocation are designed. The mechanisms allow high concurrency and provide progress guarantees for the data structure's operations. Our experimental results show that our lock-free cuckoo hashing performs consistently better than two efficient lock-based hashing algorithms, the chained and the hopscotch hash-map, in different access pattern scenarios.
Starting Page	627
Ending Page	636
File Size	378127
Page Count	10
File Format	PDF
ISSN	10636927
e-ISBN	9781479951697
DOI	10.1109/ICDCS.2014.70
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-06-30
Publisher Place	Spain
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radiation detectors Synchronization Algorithm design and analysis Clocks Concurrent computing Semantics Indexes concurrent data structures hash table cuckoo hashing lock-free CAS
Content Type	Text
Resource Type	Article
Subject	Computer Networks and Communications Hardware and Architecture Software

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