Chapter 5. Examining Linux swap device options

In this chapter, we examine options for setting up a Linux swap file. Topics include:

• Linux swapping

• Swapping with ECKD discipline

• Impact of page-cluster on MDC hit rate

• The FBA discipline

• The DIAGNOSE discipline

• Using DIAGNOSE I/O for VDISK

• Using multiple VDISKs for swapping

In 5.7, “Linux swap device recommendations” on page 72, we make some general recommendations for creating a Linux swap device. We note the DASD storage devices used are RAMAC Virtual Array (RVA) units, not newer generation IBM TotalStorage® Enterprise Storage Server® (ESS) units.