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Operating Systems HP-UX Performance problem - waiting on cache Post 302489772 by Perderabo on Friday 21st of January 2011 02:28:08 PM
Old 01-21-2011
32 GB is a much better figure but still a bit low for 8 cpus. And I still say memory is the problem. How much of that is devoted to Oracle's shared memory segments? ipcs -mb should show that.

To read data from a filesystem the data is loaded into cache (unless it's already there) and then delivered to the process. If cache is full a cache buffer must be freed. Once the buffer is free the read can continue. When you write to a file you change the data in a cache buffer. The buffer is said to be "dirty". A dirty buffer must be written to disk before it can be freed. You need more cache buffers and this probably means more memory.

Locking cache at 10% is probably not a great idea. I would try min at 10% and max at 20%. The would give the kernel some more freedom in managing what memory it has.
 

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nsquery(1)						      General Commands Manual							nsquery(1)

Name
       nsquery - name server query command

Syntax
       /usr/ucb/nsquery [ lookup ] [ host ] [ server ]

Description
       The command provides an interface to obtain host name and address information.

       If  you	specify  host,	the command obtains information about the specified host. If no host is specified, the command obtains information
       about the local host system.

       If you specify server, the command queries the BIND server that you specify. If you do not  specify  a  server,	the  command  queries  the
       default BIND server.

Options
       lookup  Retrieves the host name, Internet Protocol (IP) address, and aliases of the specified host.  If no host or server is specified, the
	       command obtains information about the local system from the default BIND server.

	       If you do specify the lookup option, the command obtains the information about  the  BIND  server  and  host  specified	(or  their
	       defaults).   If the system from which you issue the command is a BIND server, and you do not specify the lookup option, information
	       about only that server is retrieved.

Files
       Directory containing BIND server data file

       BIND server boot file

       Host database file containing name to address mapping for BIND primary
			   server

       Host database file containing address to name mapping for BIND primary
			   server

       Local host database file containing address to name mapping for BIND
			   server

       BIND server cache file

       BIND data file

See Also
       nslookup(1), resolver(3), resolver(5), named(8)
       Guide to the BIND/Hesiod Service

																	nsquery(1)
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