AgileApps Support Wiki Pre Release

Monitoring and Tuning MySQL

From AgileApps Support Wiki
  • Running on a 64-bit machine, there should be plenty of memory.
  • 20G of memory or more should be allocated to MySQL (highly recommended).
  • Allocate a good amount of memory to innodb_buffer_pool_size - the combined cached for data and the index.
  • TimeOuts
interactive_timeout, wait_timeout,innodb_lock_wait_timeout.
  • Number of file descriptors (number of files that MySQL can have open)
Open_files_limit.
Also: Check that you have a sufficient number of file descriptors available in the OS.
  • To monitor the number of active threads, live threads, and open threads:
show processlist or show full processlist
  • After modifying tuning parameters in my.cnf, always restart mysql.

Learn More: http://dev.mysql.com/doc/refman/5.5/en/server-parameters.html