Tunable Kernel Parameters

Miscellaneous Parameters
Miscellaneous Parameter Summary
Chapter 11
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Miscellaneous Parameter Summary
The following miscellaneous configurable kernel parameters affect various, usually
unrelated, HP-UX subsystems.
See also “How to Specify Configurable Parameter Values” on page 13.
CD-ROM Parameter Summary
System Clock Parameter Summary
Disk I/O Parameter Summary
Intrusion Detection System/9000
Miscellaneous:
CD
ncdnode Maximum number of entries in the vnode table and
therefore the maximum number of open CD-ROM file
system nodes that can be in memory. Manpage: ncdnode
(5).
Miscellaneous:
Clock
dst Enable/disable daylight savings time. Manpage: timezone
(5).
Miscellaneous:
Clock
timezone The offset between the local time zone and Coordinated
Universal Time (UTC), often called Greenwich Mean Time
or GMT. Manpage: timezone (5).
Miscellaneous:
Disk I/O
default_disk_ir Immediate reporting for disk writes; whether a write()
returns immediately after the data is placed in the disk's
write buffer or waits until the data is physically stored on
the disk media. Manpage: default_disk_ir (5).
Miscellaneous:
Disk I/O
dma32_pool_size Amount of memory to set aside for 32-bit DMA (bytes).
Manpage: dma32_pool_size (5).
Miscellaneous:
Disk I/O
o_sync_is_o_dsync Specifies whether an open() or fcntl() with the O_SYNC
flag set can be converted to the same call with the O_DSYNC
flag instead. This controls whether the function can return
before updating the file access. NO MANPAGE.
Miscellaneous:
Disk I/O
physical_io_buffers Total buffers for physical I/O operations. Manpage:
physical_io_buffers (5).
Miscellaneous:
IDS
enable_idds Flag to enable the IDDS daemon, which gathers data for
IDS/9000. Manpage: enable_idds (5).