I agree Jeff, it really seems this way.

Via the console, I don't see any difference in the indexes, however,
I'm not sure what's going on under the hood. I'm hoping that someone
at Google can look for me?

I imagine I can use the cost on the RPCs (a la https://gist.github.com/715284)
to see if there is a difference between similar RPC calls. I would
almost bet that they will be coming back double.

I'll try to gather more information from my end.
j

On Oct 25, 12:34 pm, Jeff Schnitzer <[email protected]> wrote:
> I really have to wonder if somehow you've added extra indexes during the
> migration.  That could easily cause this doubling.  In the absence of any
> business logic changes, this is what I would focus my investigation on
> first.
>
> Jeff
>
> On Tue, Oct 25, 2011 at 8:27 AM, Jason Collins 
> <[email protected]>wrote:
>
>
>
>
>
>
>
> > The old app is disabled.
>
> > It's tough to compare the load because the dashboard is long since
> > emptied on the old app. However, the number of Front-end Instance
> > Hours is effectively the same between old app and new app: around 24
> > instance-hours.
>
> > So we have:
>
> > - migration via automated migration tool
> > - redeploy code from old app on new app
> > - match Application Settings between old app and new app
> > - disable old app
> > - datastore write ops (in billing reports) are exactly double on new
> > app, starting exactly the day of the migration
> > - instance-hours are the the same between old app and new app
> > - (new pricing model) costs have doubled between old app and new app,
> > due entirely to doubled datastore write ops
>
> > j
>
> > On Oct 24, 4:39 pm, "Ikai Lan (Google)" <[email protected]> wrote:
> > > Long shot ... any chance your old app is still running? If so, could task
> > > queues/cron jobs on the old app might be hitting the new app and causing
> > an
> > > increase in writes? Of course ... you would see additional load if this
> > were
> > > the case.
>
> > > This would be much easier to solve if we knew which handlers were
> > generating
> > > additional writes, or if you were just seeing more load.
>
> > > --
> > > Ikai Lan
> > > Developer Programs Engineer, Google App Engine
> > > plus.ikailan.com | twitter.com/ikai
>
> > > On Fri, Oct 21, 2011 at 10:30 AM, Jason Collins
> > > <[email protected]>wrote:
>
> > > > My datastore writes comparison (0.72M/day to 1.45M/day) is using data
> > > > all from the "new pricing" portion.
>
> > > > Somehow, my datastore writes doubled precisely on the day that I
> > > > migrated to HRD. My new pricing costs correspondingly doubled from
> > > > $0.67 to $1.40.
>
> > > > While there may be no difference in the number of writes between M-S
> > > > and HRD, is there any possibility that there is a problem in the
> > > > accounting?
>
> > > > j
>
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