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Investigate the performance of String interning

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Details

  • Type: Wish Wish
  • Status: Open Open
  • Priority: Major Major
  • Resolution: Unresolved
  • Affects Version/s: None
  • Fix Version/s: 1000
  • Component/s: Runtime: Class Library
  • Labels:
    None

Description

When investigating Jython performance Steve made a simple change of the hash map used in String interning from a WeakHashMap to a VM_HashMap. This gave mixed benchmark improvements from a 1% slowdown (noise?) to 3 and 4% speedups.

http://www.nabble.com/Re%3A-Jython-performance-p12219797.html

Given this is a simple and isolated change we should investigate switching how interning is implemented as the potential 4% win on a few benchmarks is worth having.

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  • Assignee:
    Unassigned
    Reporter:
    Ian Rogers
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Dates

  • Created:
    23/Aug/07 3:44 AM
    Updated:
    11/Apr/08 9:29 AM
  • Atlassian JIRA (v5.0.4#731-sha1:3aa7374)
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