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- W1479787790 abstract "In this paper, we compare the memory system behavior of Perl and Java versions of SPECweb99. We find that the memory behaviors of these two versions of SPECweb99 are very different. The Java version incurs 213% more cache misses than the Perl version for a 1 MB second level cache and 179% more misses for a 16 MB cache. Much of this increase is due to true sharing, which is 222% to 415% higher in the Java workload than in Perl. We find that for 1 MB caches, the exclusive state is effective, since it is able to remove 24% and 61% of the write upgrades for Perl and Java respectively. However, for 8 MB caches, the exclusive state only removes 1% to 5% of the upgrades. Also, it is important to have an efficient mechanism for cache to cache transfers, since 71% to 87% of the second level cache misses hit a modified line in another processor’s cache when using 8 MB second level caches. Our early results show that processor consistency can improve the performance of Perl and Java SPECweb99 by 14% and 22% over sequential consistency. Surprisingly, we find that removing all of the serializations in processor consistency degrades the performance of the Java workload by 11%." @default.
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- W1479787790 date "2002-01-01" @default.
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- W1479787790 title "Comparison of Memory System Behavior in Java and Non-Java Commercial Workloads" @default.
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