01-26-2011
Hi,
let's start in the beginning - if you use paging space at all - you do not have enough memory.
Without knowing your box and what is running on it and what is normal and what is not there is no way to tell you what to do and what not to do.
So tell us something about your box. Post a vmstat -Iwt 2 10 output from a busy time (when you are filling up your pagingspace) and from a 'normal' time - so when your perl jobs do not run.
Show us an lsps -a output from a few min before your perl job is kicking in - so we know what is normal.
Show us a vmstat -s output.
There are many ways to clean up paging space if we need to - but since AIX is doing this on its own over time, you should never be in the situation of 'overflowing' memory and paging space in first instance when you do have enough memory in first instance - this will only happen when you are generally filling it up - what we do not know so far.
There are DB settings, filesystem mount options, system environment variables and finally system tunables that can help you - again we would need to know what else is on the box.
What might help you as well is to split your paging space - IBM doesnt recommend having paging spaces bigger 34 GB and it might help you with your issues of not enough buffers for pagingspaces and as well performance to split your paging area across multiple disks ...
Regards
zxmaus
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LEARN ABOUT OSX
dynamic_pager
dynamic_pager(8) BSD System Manager's Manual dynamic_pager(8)
NAME
dynamic_pager -- external storage manager for dynamic pager
SYNOPSIS
dynamic_pager [-F filename] [-S filesize] [-H high-water-trigger] [-L low-water-trigger] [-P priority]
DESCRIPTION
The dynamic_pager daemon manages a pool of external swap files which the kernel uses to support demand paging. This pool is expanded with
new swap files as load on the system increases. It is contracted when the swapping resources are no longer needed. The dynamic_pager daemon
also provides a notification service for those applications which wish to receive notices when the external paging pool expands or contracts.
OPTIONS
-F The base name of the filename to use for the external paging files. By default this is /private/var/vm/swapfile.
-H If there are less than high-water-trigger bytes free in the external paging files, the kernel will signal dynamic_pager to add a new
external paging file.
-L If there are more than low-water-trigger bytes free in the external paging files, the kernel will coalese in-use pages and signal
dynamic_pager to discard an external paging file. Low-water-trigger must be greater than high-water-trigger + filesize.
-P This option is currently unimplemented.
-S The fixed filesize [in bytes] to use for the paging files. By default dynamic_pager uses variable sized paging files, using larger
sized files as paging demands increase. The -S, -H and -L options disable that default and cause dynamic_pager to use a series of
fixed sized external paging files.
FILES
/private/var/vm/swapfile* Default external paging files.
/Library/Preferences/com.apple.virtualMemory.plist Configuration file.
XML PROPERTY LIST KEYS
The following keys can be specified in the configuration file. Please see plist(5) for more information about property list files.
UseEncryptedSwap <boolean>
This optional key activates encrypted swap (aka Secure VM), so that all data is encrypted before being written to a swap file. The default
is on for portable computers and off for other computers.
Mac OS X July 8, 2003 Mac OS X