aio_listio_max(5)aio_listio_max(5)NAMEaio_listio_max - the maximum number of POSIX asynchronous I/O opera‐
tions that can be specified in a listio() call
The minimum value allowed is The maximum value allowed is The value is
further constrained in that it must be less than or equal to
Specify a positive integer value.
This parameter places a limit on the system resources that can be con‐
sumed if a large number of POSIX asynchronous I/O operations are
requested in a single call. The value should be set large enough to
meet system programming needs while protecting the system against
excessive asynchronous I/O operations initiated by a malfunctioning
Who Is Expected to Change This Tunable?
System administrators that run applications requiring heavy usage of
POSIX AIO to file systems.
Restrictions on Changing
This tunable is dynamic (tuning will take effect immediately on the
What Other Tunables Should Be Changed at the Same Time as This One?
The value assigned to must be less than or equal to
All HP-UX kernel tunable parameters are release specific. This parame‐
ter may be removed or have its meaning changed in future releases of
Installation of optional kernel software, from HP or other vendors, may
cause changes to tunable parameter values. After installation, some
tunable parameters may no longer be at the default or recommended val‐
ues. For information about the effects of installation on tunable val‐
ues, consult the documentation for the kernel software being installed.
For information about optional kernel software that was factory
installed on your system, see at
was developed by HP.
SEE ALSOkctune(1M), sam(1M), gettune(2), settune(2), aio(5), aio_max_ops(5).
Tunable Kernel Parameters aio_listio_max(5)