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Full Discussion: Low Virtual memory available
Operating Systems AIX Low Virtual memory available Post 302600599 by Corona688 on Tuesday 21st of February 2012 01:44:47 PM
Old 02-21-2012
I don't think high "file pages" is bad per se, if that's disk cache like the documents I've found suggest. The OS should give that up as easily as "free", and when the right things get cached(frequently used programs and data) it's not just harmless, it's highly beneficial.

But large amounts of disk access can cause cache pollution -- all the "good" disk cache of frequently-used programs and data gets recycled, to make room for the "more recent" disk activity caused by a big FTP transfer.

This useless cache will be replaced by better things once they're used again, but not before, which may be surprisingly slow once you're used to how fast they work when cached...
 

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FREE(1) 							Linux User's Manual							   FREE(1)

NAME
free - display information about free and used memory on the system SYNOPSIS
free [-b|-k|-m|-g] [-l] [-o] [-t] [-s delay ] [-c count ] DESCRIPTION
free(1) displays the total amount of free and used physical memory and swap space in the system, as well as the buffers and cache consumed by the kernel. OPTIONS
Normal invocation of free(1) does not require any options. The output, however, can be fine-tuned by specifying one or more of the follow- ing flags: -b, --bytes Display output in bytes. -k, --kb Display output in kilobytes (KB). This is the default. -m, --mb Display output in megabytes (MB). -g, --gb Display output in gigabytes (GB). -l, --lowhigh Display detailed information about low vs. high memory usage. -o, --old Use old format. Specifically, do not display -/+ buffers/cache. -t, --total Display total summary for physical memory + swap space. -c n, --count=n Display statistics n times, then exit. Used in conjunction with the -s flag. Default is to display only once, unless -s was speci- fied, in which case default is to repeat until interrupted. -s n, --repeat=n Repeat, pausing every n seconds in-between. -V, --version Display version information and exit. --help Display usage information and exit FILES
/proc/meminfo -- memory information SEE ALSO
ps(1), top(1), vmstat(1) AUTHORS
Written by Robert Love. The procps package is maintained by Rik van Riel and Robert Love and was created by Michael Johnson. Send bug reports to <procps-list@redhat.com>. Linux 18 Nov 2002 FREE(1)
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