LRU Dump restore

Yesterday one of my colleagues pointed me to the innodb_lru_dump_restore variable available in the Percona MySQL Server distribution. See more about it here:
innodb_lru_dump_restore
LRU meaning that the list is in Least Recently Used order to make it easier to remove old items off the pages. Reading from the description it can be a very nice option for already running servers to maintain this list after startup, but it did not solve my immediate problem: I had to warm up two new freshly cloned read slaves on one of our busiest databases.

Normally I use mk-query-digest with the –processlist option on the (active) master, but in our setup this is seriously flawed because Continue reading “LRU Dump restore”

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