> Any help you can give in this would be extrememly helpful as I'm very
> far from an expert on Linux filesystems and postgres tuning.

See Tom's response; it may be that you don't have an issue at all.

If you do, it's probably the kernel, not the FS.  2.6.8 and a few other 
2.6.single-digit kernels had memory leaks in shmem that would cause 
gradually escalating swappage.  The solution to that one is to upgrade to 


Josh Berkus
Aglio Database Solutions
San Francisco

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