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aio_listio_max(5)					     aio_listio_max(5)

NAME
       aio_listio_max  -  the  maximum number of POSIX asynchronous I/O opera‐
       tions that can be specified in a listio() call

VALUES
   Failsafe
   Default
   Allowed values
       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.

DESCRIPTION
       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
       process.

   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
       running system).

   What Other Tunables Should Be Changed at the Same Time as This One?
       The value assigned to must be less than or equal to

WARNINGS
       All HP-UX kernel tunable parameters are release specific.  This parame‐
       ter  may	 be  removed or have its meaning changed in future releases of
       HP-UX.

       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

AUTHOR
       was developed by HP.

SEE ALSO
       kctune(1M), sam(1M), gettune(2), settune(2), aio(5), aio_max_ops(5).

			   Tunable Kernel Parameters	     aio_listio_max(5)

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