Skip to main content



Tuning hints & tips

developerWorks

   What's new  |   Recommendations  |   HOWTO & tools  |   Results  |   Performance papers  |   Presentations  |   More

 

The following is a collection of observations/recommendations from the Linux Performance Team for Linux on System z. These numbers are not intended for comparison with similar products on other platforms.


CPU time accounting - How to enable virtual or tick based CPU time accounting
CPU time accounting - How to obtain and enable the System Tick Misaccounting patch for SLES8
Disk I/O
Fixed I/O buffers for DASD I/O - How to enable
IBM TotalStorage Enterprise Storage Server (ESS) subsystem operating modes - How to switch between DASD modes
Linux kernel 2.6 - How to identify and select an I/O scheduler
Multipathing with SCSI disks
Volume management with LVM
Volume management with EVMS
Resource management & analysis
Linux standard tools
Other system tools
DASD statistics
FCP statistics (SLES9 / SLES10)
FCP statistics (SLES8)
Masking devices with cio_ignore


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