Tunable Kernel Parameters

Table of Tunable Kernel Parameters
Appendix A
68
File System:
Read
hfs_max_revra_blocks The maximum number of reverse read-ahead blocks that
the kernel may have outstanding for a single HFS file
system. Manpage: hfs_max_revra_blocks (5).
File System:
Read
hfs_ra_per_disk The amount of HFS file system read-ahead per disk drive,
in KB. Manpage: hfs_ra_per_disk (5).
File System:
Read
hfs_revra_per_disk The amount of memory (in KB) for HFS reverse
read-ahead operations, per disk drive. Manpage:
hfs_revra_per_disk (5).
File System:
Read
hp_hfs_mtra_enabled Enable or disable HFS multithreaded read-ahead. NO
MANPAGE.
Kernel Crash
Dump
initmodmax Maximum size of the dump table of dynamically loaded
kernel modules. Manpage: initmodmax (5).
Spinlock Pool io_ports_hash_locks I/O port spinlock pool. NO MANPAGE.
Miscellaneous:
Queue
ksi_alloc_max Maximum number of system-wide queued signals that can
be allocated. Manpage: ksi_alloc_max (5).
Miscellaneous:
Queue
ksi_send_max Maximum number of queued signals that a process can
send and have pending at one or more receivers. Manpage:
ksi_send_max (5).
ProcessMgmt:
Memory
maxdsiz Maximum process data storage segment space that can be
used for statics and strings, as well as dynamic data space
allocated by sbrk() and malloc() (32-bit processes).
Manpage: maxdsiz (5).
ProcessMgmt:
Memory
maxdsiz_64bit Maximum process data storage segment space that can be
used for statics and strings, as well as dynamic data space
allocated by sbrk() and malloc() (64-bit processes).
Manpage: maxdsiz (5).
File System:
Open/Lock
maxfiles Soft limit on how many files a single process can have
opened or locked at any given time. Manpage: maxfiles (5).
File System:
Open/Lock
maxfiles_lim Hard limit on how many files a single process can have
opened or locked at any given time. Manpage:
maxfiles_lim (5).
ProcessMgmt:
Memory
maxrsessiz Maximum size (in bytes) of the RSE stack for any user
process on the IPF platform. Manpage: maxrsessiz (5).
ProcessMgmt:
Memory
maxrsessiz_64bit Maximum size (in bytes) of the RSE stack for any user
process on the IPF platform. Manpage: maxrsessiz (5).
ProcessMgmt:
Memory
maxssiz Maximum dynamic storage segment (DSS) space used for
stack space (32-bit processes). Manpage: maxssiz (5).
ProcessMgmt:
Memory
maxssiz_64bit Maximum dynamic storage segment (DSS) space used for
stack space (64-bit processes). Manpage: maxssiz (5).
Table A-1 Tunable Kernel Parameters in Alphabetic Order (Continued)
Category Tunable Description