NDLI: Sticky tries: fast insertions, fast lookups, no deletions for large key universes

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Sticky tries: fast insertions, fast lookups, no deletions for large key universes

Content Provider	ACM Digital Library
Author	Joisha, Pramod G.
Abstract	We present the sticky trie, a new variant of the standard trie data structure that achieves high-performing atomic insertions and lookups for large key universes by precluding deletions. It has applications in several areas, including address tracking, logging, and garbage collection. By leveraging features of a modern operating system, we show how a runtime can exploit the absence of deletions to realize an efficient sticky-trie implementation. We report on an evaluation of two representative uses---compelling Bloom-filter alternative and fast substitute for a garbage collector's sequential store buffer (SSB). We demonstrate that a sticky trie, when compared with what is perhaps among the simplest Bloom filters, can be over 43% faster, scale substantially better with increasing threads, and yet be free of false positives. By introducing the concept of an ideal SSB, we also demonstrate that a sticky trie could be competitive in performance with a class of SSBs.
Starting Page	35
Ending Page	46
Page Count	12
File Format	PDF
ISBN	9781450329217
DOI	10.1145/2602988.2602998
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2014-06-12
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Address-space api Set Memory management Trie
Content Type	Text
Resource Type	Article

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