WL#4968: Apply Google IO thread and max merged IO patch to Server
Affects: Server-5.4 — Status: Complete — Priority: Medium
MySQL 5.4.0: To improve the InnoDB I/O subsystem's ability to make more effective use of available I/O capacity, apply the Google IO thread and max merged IO patches from the launchpad tree 5.1-patches maintained by Mark Callaghan: http://code.google.com/p/google-mysql-tools/wiki/InnodbAsyncIo
Applied to MySQL 5.4.0. Community contribution; for details, follow the link to launchpad: http://code.google.com/p/google-mysql-tools/wiki/InnodbAsyncIo and the MySQL 5.4.0 description: http://dev.mysql.com/doc/mysql-5.4-features/en/innodb-io-changes.html Patch adds: * innodb_max_merged_io - Max number of IO requests merged to issue large IO from background IO threads * innodb_read_io_threads - the number of background IO threads for read prefetch requests * innodb_write_io_threads - the number of background IO threads for writing dirty pages from the buffer cache
Community contribution; no further LLD needed.
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