Tons of free RAM. Can't make it go away.

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Hey everyone!

This is pretty embarrassing, but I've never seen this before. This is
our system's current memory allocation from 'free -m':

              total       used       free     buffers     cached
Mem:         72485      58473      14012           3      34020
-/+ buffers/cache:      24449      48036

So, I've got 14GB of RAM that the OS is just refusing to use for disk or
page cache. Does anyone know what might cause that?

Our uname -sir, for reference:

Linux 3.2.0-31-generic x86_64

--
Shaun Thomas
OptionsHouse | 141 W. Jackson Blvd. | Suite 500 | Chicago IL, 60604
312-444-8534
sthomas@optionshouse.com

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