Immutable session + registries #5685
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Signed-off-by: Nicholas Gates <nick@nickgates.com>
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Signed-off-by: Nicholas Gates <nick@nickgates.com>
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Benchmarks: Random AccessSummary
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Benchmarks: TPC-H SF=1 on NVMESummary
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Benchmarks: FineWeb NVMeSummary
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Benchmarks: TPC-H SF=1 on S3Summary
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Benchmarks: TPC-H SF=10 on NVMESummary
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Benchmarks: FineWeb S3Summary
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Benchmarks: CompressionSummary
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Benchmarks: TPC-DS SF=1 on NVMESummary
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Benchmarks: Statistical and Population GeneticsSummary
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Benchmarks: TPC-H SF=10 on S3Summary
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Signed-off-by: Nicholas Gates <nick@nickgates.com>
Signed-off-by: Nicholas Gates <nick@nickgates.com>
Signed-off-by: Nicholas Gates <nick@nickgates.com>
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I was seeing increasing contention from #5662 The alternate and more invasive fix is in #5685 , but we should decide if we want to allowing registering plugins after "startup", and what that means for language bindings that use a global static session object. Signed-off-by: Nicholas Gates <nick@nickgates.com>
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The current session does get_or_insert semantics, which takes a lock on the entry in the dashmap and causes contention.
We could either:
This PR explores the second option. Let's see what performance impact it has.