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Type:
Improvement
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Status: Open
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Priority:
Minor
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Resolution: Unresolved
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Affects Version/s: None
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Fix Version/s: None
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Component/s: core/store
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Labels:None
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Lucene Fields:New
When benchmarking RAMDirectory access via multiple threads the methods RAMFile::numBuffers and RAMFile::getBuffer show up blocking threads fairly frequently
By removing the synchronized keyword from these methods our internal benchmarks show a 2x performance increase under concurrent load.
I don't think removing synchronized from these methods is a problem as they are read-only and write access to these fields is not synchronized. LUCENE-2779 also implies that some ofthe locking on RAMDirectory is not necessary
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