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  1. JDK
  2. JDK-8208142

Fix perf regression for simple startup benchmarks in new SymbolTable

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      Switching SymbolTable implementation to use concurrent hash table shows minor (~5%) regression for trivial startup benchmarks.

      Need to figure out what exactly is going on (old table was practically sync free when JVM starts up single threaded, but new one has some bookkeeping to do always) and get the performance back up.

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          is blocked by

          Sub-task - The sub-task of the issue JDK-8214310 SymbolTable: Use get and insert

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8195100 Use a low latency hashtable for SymbolTable

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved
          relates to

          Bug - A problem which impairs or prevents the functions of the product. JDK-8216049 stringTable::intern creates redundant String when looking up existing one

          • P3 - Major loss of function.
          • Resolved

          Enhancement - null JDK-8219554 Redundant lookup_common in SymbolTable::add

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Resolved

          Enhancement - null JDK-8218646 Optimize os::jvm_path()

          • P4 - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. JDK-8209054 ConcurrentHashTable: Do not allocate inside critical section

          • P2 - Crashes, loss of data, severe memory leak.
          • Closed

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              gziemski Gerard Ziemski
              gziemski Gerard Ziemski
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