On 8/23/07, Chris Snook [off-list ref] wrote:

Mike --

       Try Dave's suggestion to increase vm.vfs_cache_pressure.  drop_pages
should never be needed, regardless of which caches you're dropping.

       -- Chris

thanks all. i will try it on one of the machines and see how it performs.

this is an opteron 1.8ghz (amd64), ubuntu, latest stable linux kernel,
3 gigs of ram (just FYI) - SATA disk.

i thought i'd do it every 5 minutes not because of a horrible memory
leak that fast, but figured "why not just free up all RAM as often as
possible"

when you said "sar" are you talking about this:

atsar - system activity reporter
Description: system activity reporter
 Monitor system resources such as CPU, network, memory & disk I/O, and
 record data for later analysis

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