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performance reduced when upgrade to RocksDB 6.4 #5578
I'm not able to reproduce on IDC server. I run sysbench oltp_point_select with the following params. I run
what I'm getting:
seems 6.4 even has ~2.5% higher QPS than 6.3. And 6.2 and 6.3 perform similarly. I'll try reproduce on benchbot host instead.
Run the same benchmark with 256 threads and tmpfs, run in order of 6.2, 6.3, 6.4 and 6.2 and 6.4 again, each 3 times:
The result seems not very stable.
The regression can be reproduced on benchbot host. It seems it is related to block cache changes:
Still trying to figure out what exactly cause the regression and how to fix it.