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  1. JDK
  2. JDK-8180614

Skip range and constraint checks on non-existent flags

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Details

    • Bug
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 9, 10
    • 10
    • hotspot
    • 9
    • b21

    Description

      JEP-245 code is currently looking up non-product and lp64 flags to check valid ranges and constraints, even on builds where they are emitted as constants (product and 32-bit respectively)

      Skipping such flags reduce the overhead of checking flags during startup by 15% on 64-bit, and skipping 64-bit only flags improves the situation even more on 32-bit builds.

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. JDK-8178991 Excessive amounts of calls to Flag::find_flag during startup

          • P3 - Major loss of function.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8178991 Excessive amounts of calls to Flag::find_flag during startup

          • P3 - Major loss of function.
          • Closed

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              redestad Claes Redestad
              redestad Claes Redestad
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              Dates

                Created:
                Updated:
                Resolved: