memory usage displsy

[Bill Moran]

In response to Per olof Ljungmark <peo at intersonic.se>:

> Dan Nelson wrote:
> > In the last episode (Sep 01), Bill Moran said:
> >> In response to Per olof Ljungmark <peo at intersonic.se>:
> >>> What is a good way to find out how memory is used? Have a 6.4 box where
> >>> memory is used by something but I fail to see what is using it - tried
> >>> different switches to ps(1), tried the stat tools but a big chunk of
> >>> memory does not show at all.
> >>>
> >>> A proper tool for analyzing memory usage "live", this is a production
> >>> box?
> >> I've always been able to get what I need from top.  You can do -o res to
> >> sort by resident memory usage, which helps.
> > 
> > ps will sort by memory usage when given the -m flag.  Also check ipcs -a to
> > see if there are any sysv shared memory segments hanging arnound.  If you
> > don't see anything using the memory, where are you seeing that "something"
> > is using it?
> > 
> 
> ...and here is top output after I stopped Postfix, slapd and Cyrus-IMAP. 
> Still over 3G Active.

<snip>

You did not sort by res and there are only 40 processes showing, which
means your output is truncated and may have truncated the problematic
process.

Please use "top -o res" to get the output sorted by memory usage, or
don't truncate the output (former preferred).

Also, please provide the output of "ipcs -a"

-- 
Bill Moran
http://www.potentialtech.com
http://people.collaborativefusion.com/~wmoran/