InnoDB Plugin 1.0 for MySQL 5.1 User's Guide  /  Performance and Scalability Enhancements  /  Improvements to Crash Recovery Performance

7.15. Improvements to Crash Recovery Performance

Starting with InnoDB Plugin 1.0.7, a number of optimizations speed up certain steps of the recovery that happens on the next startup after a crash. In particular, scanning the redo log and applying the redo log are faster. You do not need to take any actions to take advantage of this performance enhancement. If you kept the size of your logfiles artificially low because recovery took a long time, you can consider increasing the logfile size.

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