Hobbit Memory is Yellow but it's just normal

[Frank Flynn <frank (at) declan.com>]

Hi All,

I have a server who's memory keeps going Yellow:

   Mon Oct 15 14:50:27 PDT 2007 - Memory low

   Memory              Used       Total  Percentage
  green Physical           7820M       8055M         97%
  yellow Actual             7341M       8055M         91%
  green Swap                  0M       8055M          0%

And so it is; these numbers do match the `free` numbers.  But it's  
not really all being used, it's just the way Linux works.

I'm really only using ~1.5 Gb of 8 and the rest is 'Slab' - which is  
kept around by the kernel as a cache.  But I have no Swap used so  
we're good.

So how do I get Hobbit to see that and relax (not go to Yellow) until  
we start using Swap?

Frank