"too big" and "not enough memory" errors in shell script Post: 302285865

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Operating Systems AIX "too big" and "not enough memory" errors in shell script Post 302285865 by bakunin on Monday 9th of February 2009 11:20:45 PM

02-10-2009

Registered User

Quote:

Originally Posted by jerardfjay

Code:

svmon -G
               size      inuse       free        pin    virtual
memory      3670016    3411288     258728     222409     554969

Lets see: The output of "svmon" is in memory pages, which are 4k in AIX. The "size" and "inuse" values tell the physical memory and how of that is used. The machine has ~14GB memory installed (3.5 mio of 4k pages) and uses nearly all of it constantly. That the machine uses all of the physically installed memory is OK and to be expected.

The "virtual" column is the overall memory used by applications. The number is small compared to the number of installed memory and this means that the machine has enough memory for its day-to-day-operation. These figures are statistical in nature and this shows that your memory problems are short peaks of dramatically increased memory demand in a otherwise relatively idle machine.

The one java process you found is IMHO not the problem. If i interpret it correctly it is configured to use 256MB and this should be no big problem.

The output of "vmstat" shows nothing exceptional and the "lpstat" shows you have only 6GB of swap configured. This is a bit on the light side for 14GB of real memory, but otherwise only 1% of the swap is in use - it doesn't seem that you need more right now.

This leaves the question what goes wrong on your machine. You said you experience the problems only in very short timeframes. Start with searching the crontabs of all users you might find one (or several) troublemaker(s) which is (are) called only rarely. (I had such a situation once when a machine was experiencing a severe memory shortage with heavy paging activity every three days. We analyzed the situation and found out that a "mksysb" was responsible for the problem. We moved this mksysb-run to another time with less activity and the problem never happened again.)

I hope this helps.

bakunin

bakunin

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install-memo

install-memo(1) 					      General Commands Manual						   install-memo(1)

NAME

       install-memo - installs a new memo in a Palm Computing Device

SYNOPSIS

       install-memo -p <port> [-c category ] filename [filename filename ...]

DESCRIPTION

       install-memo allows the user to write one or more files as a new memo or memos, respectively, onto the Palm handheld device.

   OPTIONS
       -p --port <port>,
	      Use  device  file port to communicate with the Palm handheld device. If this is not specified, will look for the $PILOTPORT environ-
	      ment variable. If both are not found, will fall back to /dev/pilot.

       -h --help
	      Display help synopsis for install-memo

       -v --version
	      Display version of install-memo

       -c category
	      Install memo(s) to category category by default. Normally install-memo uses Unfiled as the default category.

       -q     Causes install-memo to be quiet and not prompt you to press the HotSync button.

       -r     Replace all memos in the category specified by the -c category option.

       -t     Use the filename as the title for the memo. (The title is the first line of a memo.)

USAGE

       The program will connect to the Palm handheld device, and write the file or files given on the command line into the MemoPad application on
       the Palm.

KNOWN BUGS

       The Palm Device may have a maximum length on memo sizes.

REPORTING BUGS

       Report bugs at http://bugs.pilot-link.org/

AUTHOR

       install-memo was written by Damien P. Neil <neild@rpi.edu>

Free Software Foundation				    Palm Computing Device Tools 					   install-memo(1)