tuneserver(1m) [hpux man page]

tuneserver(1M)															    tuneserver(1M)

NAME

       tuneserver - optimize the kernel tunable values

SYNOPSIS

DESCRIPTION

       The tool tunes the kernel tunables to improve server performance.

       There  are certain kernel tunables identified, which when updated with the appropriate values, improves the performance of servers signifi-
       cantly.

       For complete details about these tunables and their values, refer to the whitepaper at

   Options
       Provide usage information of the tool.

       List all tunables and their optimal values.

       Optimizes the value of kernel tunables so that performance will be
	    improved.

       Sets the value of kernel tunables back to the value
	    prior to the optimization that was done with the option.  This option is provided so that tunables can be set to their  original  val-
	    ues, if required.

       For  both  and  options, the server need to be restarted for the tunable changes to be applied to the system.  This tool gives a message if
       restart is required.

RETURN VALUE

       The tool returns zero upon successful completion, or nonzero if it fails.

EXAMPLES

       Get the list of tunables and their recommended values:

       Tune the server:

AUTHOR

       was developed by Hewlett-Packard.

SEE ALSO

       whitepaper at

																    tuneserver(1M)

dbc_max_pct(5)							     OBSOLETED							    dbc_max_pct(5)

NAME

       dbc_max_pct, dbc_min_pct, bufcache_max_pct, bufpages, nbuf - OBSOLETED kernel tunable parameter

DESCRIPTION

       These tunables have been obsoleted and removed.	Do not make any changes to these tunables, as they have no effect on the kernel.

       Use the file cache tunables and (see filecache_max(5)).

       In  previous  releases, the tunables and were used to set limits to the dynamic buffer cache, and the tunables and were used for tuning the
       buffer cache when a static cache was desired.

       This release of HP-UX offers improved file caching technology and improved physical memory control associated to  caching  file	I/O  data.
       The  number  of tunable parameters used to control file caching memory usage is reduced from five to two, and previous usability issues are
       addressed.

   Restrictions on Changing
       These tunables should not be modified.  Attempting to tune any of the obsolete buffer cache tunables, or results in an error.

       Use the tunables and to set limits on the file cache.  Note that, on a any given system, the optimum values of these two new  tunables  are
       not necessarily equivalent to the optimum values of the obsolete buffer cache tunable values in the older systems.  You should first deter-
       mine if the new default values yield acceptable performance on your system, before attempting to change the values of the  new  file  cache
       tunables.

AUTHOR

       and were developed by HP.

SEE ALSO

       filecache_max(5).

							     Kernel Tunable Parameter						    dbc_max_pct(5)