Disk Sort Intermediate Storage Calculation Formulas - mfx - 3.1

where:

A = Number of records to be sorted.

B = Average record length of data being sorted.

C = Track capacity of the work device:

Table 1. Device Type and Track Capacity DEVICE TYPE TRACK CAPACITY IN BYTES  3380  47,476  3390  56,664  9345  46,456

 

Allocating disk storage space in cylinders rather than tracks will improve the performance of MFX. When converting tracks to cylinders, round the number of cylinders up to the higher number. For example, if 9.5 cylinders are needed, allocate 10 cylinders.