Veritas Storage Foundation™ for Oracle 5.0.1 Administrator's Guide

max_thread_proc
This parameter sets the maximum number of threads that a process can create.
The high performance of VxFS and the Quick I/O driver depend on the value of
this tunable. Set the max_thread_proc parameter to 1200.
asyncdsk, asyncdsk_included, and max_async_ports
These parameters are used for including and configuring the asynchronous I/O
driver in the HP-UX kernel, resulting in less I/O overhead and higher throughput.
The parameter max_async_ports sets the maximum number of connections
between user processes and the asyncdsk driver. See your Oracle documentation
for the recommended value, or set max_async_ports to 1024 if a value is not
recommended.
eqmemsize
The I/O subsystem uses a pool of memory allocated by the eqmemsize parameter
for I/O system memory. The eqmemsize parameter specifies the minimum amount
of this equivalently mapped memory. The exhaustion of this memory pool degrades
I/O performance, thus impacting application performance. See your Oracle
documentation for the recommended value, or set eqmemsize to 512 if a value is
not recommended.
nproc
This parameter sets the maximum number of processes. The nproc parameter
may need to be set higher for a large database. See your HP-UX and Oracle
documentation for the recommended value.
maxuproc
This parameter sets the maximum number of processes a non-root user can create
in parallel. The maxuproc parameter may need to be set higher for a large database.
See your HP-UX and Oracle documentation for the recommended value.
semmni
This parameter sets the number of semaphore set identifiers in the system. The
semmni parameter determines the number of semaphore sets that can be created
at any one time, and may need to be set higher for a large database. See your
HP-UX and Oracle documentation for the recommended value.
315Tuning for performance
About tuning HP-UX