It is very likely that the servers don't have swap. I suspect that when google 
has a 1GB server, they stick just 7 128MB users on there. Remember: google's 
architecture is to have a zillion little computers, and distribute everything.

On Dec 14, 2011, at 11:03 AM, Rishi Arora wrote:

> Yeah, more RAM is linearly more costlier, which seems unfair and 
> un-competitive.  It does make me wonder though, how hard does Google (and 
> others like linode) try to actually make all that RAM available to you.  In 
> other words, if you bought an instance with 4G RAM, do they absolutely 
> guarantee you'll get all 4GB in physical RAM and won't start swapping because 
> you're probably sharing the server with other apps?

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