Hi Francois,

Don't set min idles to automatic, set it to a high enough number that
over time Total instances (blue) == Billed instances (green). Leave
max idles and the two latency settings at automatic.

If you do have min idles configured, can you post a screencap of your
instances graph?

/Tom

On Jan 18, 8:45 am, Francois Masurel <f.masu...@gmail.com> wrote:
> Things are getting worse : 20 loading requests for the last 23 minutes
> (about 20% of all requests).
>
> Could I have an explanation ?
>
> What am I doing wrong ?  I'm really lost :-(
>
> App Id : vncts1
>
>
>
>
>
>
>
> On Friday, January 18, 2013 2:25:17 PM UTC+1, Francois Masurel wrote:
>
> > I have been testing full automatic mode for the last hours (all
> > application settings set to automatic).
>
> > Still getting quite a few user-facing loading requests (~20 per hour, 5%
> > of all requests), there is no more warmup requests in the logs.
>
> > One dynamic instance has been alive since the beginning of the test and is
> > getting most of the traffic.
>
> > Are these numbers normal ?
>
> > François
>
> > App Id: vncts1
>
> > On Thursday, January 17, 2013 11:21:16 PM UTC+1, Francois Masurel wrote:
>
> >> 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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