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ncdnode(5) [hpux man page]

ncdnode(5)							File Formats Manual							ncdnode(5)

NAME

       ncdnode - maximum number of open CDFS files (system-wide)

VALUES

   Failsafe
   Default
   Allowed values
       The minimum value allowed is The maximum value allowed is memory limited.

       Specify a positive integer value.

DESCRIPTION

       defines the number of slots in the inode table for in the CD-ROM file systems (CDFS).  This number limits the number of open nodes that can
       be in memory for CDFS file systems at any given time.  It is functionally similar to but applies only to CD-ROM file systems.

   Who Is Expected to Change This Tunable?
       This tunable may need to be modified on systems that run applications requiring access to CD-ROM file systems.

   Restrictions on Changing
       The kernel module, which provides the file system type specific support for CD-ROM file systems, is now a dynamically loadable kernel  mod-
       ule (DLKM).  Any changes to the value of the tunable will take effect after the kernel module is unloaded and re-loaded (see kcmodule(1M)),
       or after system reboot.

   When Should the Value of This Tunable Be Raised?
       The value may need to be raised when running applications which require large numbers of simultaneously open CDFS files.

   What are the Side Effects of Raising the Value?
       More system memory will be consumed for the CDFS nodes.	A larger static inode table for CDFS will be created based on the  value  of  upon
       kernel module load or system reboot

   When Should the Value of This Tunable Be Lowered?
       The value can be lowered to limit the number of CDFS open files on the system and reduce memory consumption.

   What are the Side Effects of Lowering the Value?
       Less system memory will be consumed for the CDFS inodes upon kernel module load or system reboot.

   What Other Tunable Values Should Be Changed at the Same Time?
       None.

WARNINGS

       All  HP-UX kernel tunable parameters are release specific.  This parameter 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 values.  For information about the effects of installation on tun-
       able values, 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), kcmodule(1M), sam(1M), gettune(2), settune(2), ninode(5).

							     Tunable Kernel Parameters							ncdnode(5)

Check Out this Related Man Page

STRCTLSZ(5)							File Formats Manual						       STRCTLSZ(5)

NAME

       STRCTLSZ - maximum size of streams message control (bytes)

VALUES

   Failsafe
   Default
   Allowed values
   Recommended values
DESCRIPTION

       limits the maximum number of bytes of control data that can be inserted by in the control portion of any streams message on the system.	If
       the tunable is set to zero, there is no limit on how many bytes can be placed in the control segment of the message.

       returns if the buffer being sent is larger than the current value of

   Who Is Expected to Change This Tunable?
       Any customer.

   Restrictions on Changing
       Changes to this tunable take effect at next reboot.

   When Should the Value of This Tunable Be Raised?
       The tunable should be increased by any customer if the customer's STREAMS module/driver(s) require more bytes in the control portion of any
       streams message than the current value.

   What Are the Side Effects of Raising the Value of This Tunable?
       The kernel will use more memory.  During low memory situations, it may bring down system performance due to frequent swapping.

   When Should the Value of This Tunable Be Lowered?
       The tunable could be lowered by any customer if the customer's STREAMS module/driver(s) do not require a longer message size in the control
       portion than the current value.

   What Are the Side Effects of Lowering the Value of This Tunable?
       Possible improper functioning in any of the STREAMS module/driver(s).  Possible performance degradation, particularly in networking.

   What Other Tunable Should Be Changed at the Same Time as This One?
       None.

WARNINGS

       All HP-UX kernel tunable parameters are release specific.  This parameter 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 values.  For information about the effects of installation  on  tun-
       able  values,  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.

							     Tunable Kernel Parameters						       STRCTLSZ(5)
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