HP-UX 11i Version 1.6 Release Notes

Other Functionality
Default File System Parameters
Chapter 8
155
Default File System Parameters
Changes to the Ignite-UX default file system parameters are included in HP-UX 11i
v1.6.
Summary of Change
A small set of default file system parameters delivered by Ignite-UX in "Instant Ignition"
and the HP-UX media kit ("Cold-Install Media") have been tuned for better performance.
These changes were made to take better advantage of the larger system memory and
disk configurations found in today's HP-UX workstations and servers. These default
changes apply equally to all workstation and server systems.
Details of Change
The following specific changes were made to improve overall file system performance:
• File systems in HP-UX 11i v1.6 are created with
largefiles=TRUE (previous
default:
FALSE )
• Block size increased to:
— 65536 (64Kb) for HFS (previous default: 8Kb)
— 8192 (8Kb) for VxFS (previous default: 1Kb)
• Frag size increased to:
— 8192 (8Kb) for HFS (previous default: 1Kb)
— Not applicable to VxFS
• Stripe size increased to 64Kb. (previous default: 8Kb)
• Secondary Swap Space Model (for two disk configurations)
— Previous behavior: Secondary swap space would be spread across both disks in a
two disk system configuration.
— New behavior: Secondary swap space is put only on the second disk. HP-UX then
interleaves between the first and second disk swap area for improved
performance.