Author: Ben Handy
InnoDB has been changed to run faster on SMP servers. The improvements are significant on servers with 8+ cores. The changes include:
- use atomic memory operations for the Innodb mutex
- use tcmalloc and disable the InnoDB memory heap (see http://bugs.mysql.com/bug.php?id=38531)
- use atomic memory operations for the Innodb rw-mutex.