Hi Tom,

Thanx for your suggestion, that's just the settings I'm testing at the 
moment.

Seems to reduce significantly user-facing requests but will quite increase 
my bill (x4) :-(

May be it will be worth it.

I'll tell you how it goes.

François



On Thursday, January 17, 2013 11:11:56 PM UTC+1, Tom Phillips wrote:
>
> Make sure on your instances graph that the blue "Total" line is not 
> often, ideally only under unforeseen bursts, going higher than the 
> green "Billed" line. 
>
>
> Total(blue) > Billed(green): you aren't charged for the delta between 
> Total and Billed, but lower QOS for users (assuming your startup time 
> is high) since they get most loading requests. 
> Total(blue) == Billed(green): Your /_ah/warmup gets all loading 
> requests, optimal QOS 
>
> This is just what I've observed (leaving max idles and min/max latency 
> at automatic). Unless you have magically low startup latency, boost 
> min idles until Total == Billed consistently. 
>
> /Tom 
>
> On Jan 17, 11:56 am, Francois Masurel <f.masu...@gmail.com> wrote: 
> > For my low traffic website I have found that 50 new instances were 
> started 
> > during the last 2 hours and 22 minutes (taken from logs searching for 
> "new 
> > process"). 
> > 
> > Seems quite a lot for me as I already have a resident instance. 
> > 
> > But what annoys me the most is that, among those 50 loading requests, 20 
> > were user-facing requests (40%) and 5 were cron requests (10%). 
> > 
> > Is it normal behavior ?  Thanx for your help. 
> > 
> > François 
>

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