In a follow-up experiment to an earlier post on TokuDB recovery times, I tried to create a better apples-to-apples comparison to InnoDB recovery time. If I measure recovery times when both DBs are doing the same amount of work, TokuDB requires only 2s to recover from a crash, compared to 1020s for InnoDB. Background In [...]
We recently made transactions in TokuDB 3.0 durable. We write table changes into a log file so that in the event of a crash, the table changes up to the last checkpoint can be replayed. Durability requires the log file to be fsync’ed when a transaction is committed. Unfortunately, fsync’s are not free, and may [...]
