Caching Strategies for More Efficient Generational Garbage Collection

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dc.contributor.advisor Yan Solihin, Committee Member en_US
dc.contributor.advisor Vincent W. Freeh, Committee Member en_US
dc.contributor.advisor Edward F. Gehringer, Committee Chair en_US Krishnakumar, Sree Vidhya Lakshmi en_US 2010-04-02T18:17:20Z 2010-04-02T18:17:20Z 2004-01-08 en_US
dc.identifier.other etd-01082004-102033 en_US
dc.description.abstract Until the advent of generational garbage collection, page faults caused by garbage collection were a major source of bottleneck. Generational garbage collectors, by collecting smaller regions of the heap called generations, reduce the memory footprint of the collector and therefore the number of page faults caused by it. With page faults out of the way, the focus now is on cache misses due to garbage collection. The gap between the processor and memory cycle time is widening each year. Projections indicate that this increase is likely to continue. This makes cache performance an attractive area to study in order to tune the performance of a program. In one such study, a strategy has been proposed to improve cache performance of generational garbage collectors by pinning the youngest generation in the L2 cache. In this thesis, we study an anomaly associated with this strategy, and propose a new realization of the pinning strategy that removes this anomaly, thereby making it more attractive. We apply the idea of an SNT (selectively non-temporal) cache to garbage collection. This helps reduce cache pollution and conflict misses in a direct mapped cache due to non-temporal accesses during garbage collection. Simulation results show an average miss-rate reduction of 10% for 16 KB and 32 KB direct mapped L1 caches with SNT support. The improvement is greater in benchmarks with a large amount of live data. en_US
dc.rights I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to NC State University or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. en_US
dc.subject cache performance of garbage collectors en_US
dc.subject cache performance of garbage collection en_US
dc.subject improving cache performance of garbage collectors en_US
dc.subject improving cache performance of garbage collection en_US
dc.title Caching Strategies for More Efficient Generational Garbage Collection en_US MS en_US thesis en_US Computer Science en_US

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