Exponential memory usage?

[Stefan Ring]

On Fri, Mar 28, 2014 at 6:53 PM, Tap <tap at anti-paladin.com> wrote:
> My questions are:
>
> 1.  Is this expected?
>
> 2.  Are there any XFS memory calculators that would have shown me this is a problem to begin with?
>
>
> Given it walks out of 32 GB of memory I can't be sure that upgrading to 64 or 128 GB will *ever* help this situation.
>
> Note:  FWIW Un-mounting the filesystem also recovers the memory.

How do you determine that the system runs out of memory?