Command to check memory used or consumed by OS kernel Post: 303000069

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LEARN ABOUT HPUX

ncdnode

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)

10 More Discussions You Might Find Interesting

1. Solaris

1. To know the Memory consumed by a process at a time

Discussion started by: maheshkoushik

2. HP-UX

kernel, memory and patches information

Discussion started by: Teh Tiack Ein

3. AIX

Kernel use of real memory

Discussion started by: daniels

4. UNIX for Advanced & Expert Users

the amount of memory consumed per user

Discussion started by: big123456