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huge difference of performance gain when memfile is configured with persist false
I've executed two tests, multi threading + memfile with persist false (there is no writing to the file). And results are surprising, revealing possible inefficiency.
results:
- multi threading v6 memfile persist true: 36k leases/s
- multi threading v6 memfile persist false: 47k leases/s
- gain: 30%
- multi threading v4 memfile persist true: 20k leases/s
- multi threading v4 memfile persist false: 37k leases/s
- gain: 85%
Please investigate if there is an inefficiency in a way Kea saves v4 leases to the file.