What is the recommended I/O scheduler for a database workload in Red Hat Enterprise Linux?

Solution Verified - Updated -

Issue

  • What is the recommended I/O scheduler for an Oracle database in Red Hat Enterprise Linux?
  • What is the recommended I/O scheduler for an DB2 database in Red Hat Enterprise Linux?
  • What is the recommended I/O scheduler for an mysql, postgress database in Red Hat Enterprise Linux?

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 4
  • Database applications
  • Physical (non-virtualized) disks

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