garbage collection not reflected in the nmon


 
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Operating Systems AIX garbage collection not reflected in the nmon
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Old 10-31-2008
garbage collection not reflected in the nmon

i have my application running on AIX box (configuration given below)
My application does garbage collection pretty well, as such the memory free shows 500 MB - 700 MB freed up in the log statements printed in the application, but the nmon shows the physical space going upwards and does not reflect the garbage collection that was done. What could be the reason ?

Configuration..

8 - CPUs currently
8 - CPUs configured
1900 - MHz CPU clock rate
PowerPC_POWER5 - Processor
64 bit - Hardware
64 bit - Kernel
Dynamic - Logical Partition
5.3.0.50 ML05 - AIX Kernel Version
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NMON(1) 							   User Commands							   NMON(1)

NAME
nmon - systems administrator, tuner, benchmark tool. DESCRIPTION
This manual page documents briefly the nmon command. This manual page was written for the Debian distribution because the original program does not have a manual page. nmon is is a systems administrator, tuner, benchmark tool. It can display the CPU, memory, network, disks (mini graphs or numbers), file systems, NFS, top processes, resources (Linux version & processors) and on Power micro-partition information. OPTIONS
nmon follow the usual GNU command line syntax, with long options starting with two dashes (`-'). nmon [-h] [-s <seconds>] [-c <count>] [-f -d <disks> -t -r <name>] [-x] A summary of options is included below. -h FULL help information Interactive-Mode: read startup banner and type: "h" once it is running For Data-Collect-Mode (-f) -f spreadsheet output format [note: default -s300 -c288] optional -s <seconds> between refreshing the screen [default 2] -c <number> of refreshes [default millions] -d <disks> to increase the number of disks [default 256] -t spreadsheet includes top processes -x capacity planning (15 min for 1 day = -fdt -s 900 -c 96) AUTHOR
nmon was written by Nigel Griffiths <nag@uk.ibm.com> This manual page was written by Giuseppe Iuculano <giuseppe@iuculano.it>, for the Debian project (but may be used by others). nmon August 2009 NMON(1)