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  1. Lucene - Core
  2. LUCENE-1607

String.intern() faster alternative

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.9
    • Component/s: None
    • Labels:
      None
    • Lucene Fields:
      New, Patch Available

      Description

      By using our own interned string pool on top of default, String.intern() can be greatly optimized.

      On my setup (java 6) this alternative runs ~15.8x faster for already interned strings, and ~2.2x faster for 'new String(interned)'
      For java 5 and 4 speedup is lower, but still considerable.

        Attachments

        1. intern.patch
          30 kB
          Earwin Burrfoot
        2. LUCENE-1607.patch
          2 kB
          Noble Paul
        3. LUCENE-1607.patch
          10 kB
          Yonik Seeley
        4. LUCENE-1607.patch
          6 kB
          Yonik Seeley
        5. LUCENE-1607.patch
          5 kB
          Yonik Seeley
        6. LUCENE-1607.patch
          5 kB
          Yonik Seeley
        7. LUCENE-1607.patch
          5 kB
          Yonik Seeley
        8. LUCENE-1607.patch
          36 kB
          Earwin Burrfoot
        9. LUCENE-1607.patch
          31 kB
          Earwin Burrfoot
        10. LUCENE-1607.patch
          6 kB
          Yonik Seeley
        11. LUCENE-1607.patch
          6 kB
          Yonik Seeley
        12. LUCENE-1607.patch
          5 kB
          Yonik Seeley
        13. LUCENE-1607-contrib.patch
          3 kB
          Uwe Schindler

        Issue Links

        is related to

        Improvement - An improvement or enhancement to an existing feature or task. LUCENE-1308 Remove String.intern() from Field.java to increase performance and lower contention

        • Major - Major loss of function.
        • Closed
        relates to

        Improvement - An improvement or enhancement to an existing feature or task. LUCENE-1600 Reduce usage of String.intern(), performance is terrible

        • Minor - Minor loss of function, or other problem where easy workaround is present.
        • Closed

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            People

            • Assignee:
              yseeley@gmail.com Yonik Seeley
              Reporter:
              earwin Earwin Burrfoot

              Dates

              • Created:
                Updated:
                Resolved:

                Issue deployment