Fixed ForestDB driver - Githubissues

pmwkaa / ioarena

Embedded storage benchmarking tool

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Fixed ForestDB driver #15

Closed snej closed 8 years ago

snej commented 8 years ago

Added missing 'break' statements between several 'switch' cases. The fall-through was messing up the logic and causing errors.
Removed some hardcoded config settings that degraded performance on machines with < 16 cores. Let ForestDB determine these on its own.
Use manual compaction mode, otherwise the bg compactor never gets enough time to run during a normal benchmark. For fairness, force a manual compaction during the very first operation. (At end of the last operation would be better, to leave the db file as small as possible, but I couldn't find a way to tell which operation will be the last.)

pmwkaa commented 8 years ago

thanks!

snej commented 8 years ago

FYI, performance of ForestDB on my MacBook Pro, with the batch benchmark is about 2x LevelDB, but only ⅓ the speed of LMDB. (LMDB is insane.)

The other benchmarks are IMHO unrealistic because they make only one or two writes per transaction. (ForestDB has a fairly high cost of committing a transaction.) But I'm willing to believe that somebody has use cases that have to perform tiny transactions like that...