From my dealings with a cloud host on a recent account, my understanding of "instance" is that it is basically the same as a virtual machine, but because it can be anywhere in the cloud it's not quite the same.

Since Drupal "goes away" after serving the page, I don't think one need worry about the user leaving the page, even if it is in the middle of a dialog.

The "time" component is, I assume, a measure of CPU consumption, so it would be considered a valid measure of resource usage. While we used to track that back in my mainframe days, I haven't seen any stats program that does it today.

Nancy

Injustice anywhere is a threat to justice everywhere. -- Dr. Martin L. King, Jr.

From: adept techlists - kazar <techlists@ade.pt>
To: support@drupal.org; Ms. Nancy Wichmann <nan_wich@bellsouth.net>
Sent: Saturday, June 4, 2011 10:44 PM
Subject: Re: [support] Cloud pricing estimates

Ah, so you mean how to estimate, for example, EC2 on-demand instances.
Sorry I gave you lots of info you didn't need!

I have read those price matrices and I admit to being totally clueless
as to what an "instance" is. If someone loads up a page that leaves them
connected as a seat on your database, and they type a word into a
formfield, and they go on vacation for 3 weeks, is that an "instance"?
(Rhetorical question, I no longer have room for this sorta stuff in my
head and just hire the gals & guys who take care of that part of a job)

kazar
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