Linux on System z - Tuning hints & tips
Compiler GCC
CPU hotplug
CPU time accounting
Disk I/O
Database server
Java
Journaling file systems
Linux under z/VM
Mail server Lotus Domino
Networking
Resource management & analysis
Scalability of Linux kernel 2.4 and kernel 2.6
Security appliances
System z10
Timer patch
Web applications

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Database server

	Recommendations \| Performance papers

	Initialization parameters used for Oracle I/O option measurements
	Miscellaneous settings
	Selecting the test scenario

	I/O options
	Relink Oracle for async I/O

Miscellaneous settings

When the statspack reports 'log file sync' as one of the top 5 wait events then a significant performance improvement is to

increase the log buffers
put the redo log files to a separate storage unit, e.g. another rank or another storage server

Team

Please address any comments to the performance team: linux390@de.ibm.com