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Type: Enhancement
Resolution: Not an Issue
Priority: P4
Fix Version/s: 13
Affects Version/s: 12
Component/s: hotspot
Labels:

Subcomponent:
runtime

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.

is blocked by

JDK-8214310 SymbolTable: Use get and insert

Resolved

JDK-8195100 Use a low latency hashtable for SymbolTable

Resolved

relates to

JDK-8216049 stringTable::intern creates redundant String when looking up existing one

Resolved

JDK-8219554 Redundant lookup_common in SymbolTable::add

Resolved

JDK-8218646 Optimize os::jvm_path()

Closed

JDK-8209054 ConcurrentHashTable: Do not allocate inside critical section

Closed

(1 relates to)

Assignee:: Gerard Ziemski

Reporter:: Gerard Ziemski

Votes:: 0 Vote for this issue

Watchers:: 3 Start watching this issue

Created:: 2018-07-24 07:14

Updated:: 2024-10-09 13:32

Resolved:: 2019-02-21 13:08

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