Pedro,

I've migrated your application. Can you check and report back what is
happening? If your application errors at a rate that is more closer to
normal parameters, then we have an issue with a hotspot. Do you know if the
errors increased more at certain times in the day, or were the increased
number of errors at all times?

On Tue, Feb 23, 2010 at 2:47 PM, John Gardner <[email protected]> wrote:

> I'm seeing the same thing on one of my apps.  The same codebase with
> another appid appears to be fine.  Is an appid tied to certain
> instances, and some groups of instances are dead/dying?
>
> On Feb 23, 1:46 pm, Pedro Morais <[email protected]> wrote:
> > Can anyone from Google take a look at the issue please?
> >
> > My application is basically unusable right now.
> >
> > Regards,
> > Pedro Morais
> >
> > On Feb 23, 3:32 pm, Pedro Morais <[email protected]> wrote:
> >
> >
> >
> > > Hi,
> >
> > > Looking athttp://
> code.google.com/status/appengine/detail/serving/2010/02/22#ae-...
> > > you can see that there was a spike yesterday in request serving
> > > latency.
> >
> > > The comment says "Investigation Complete - Issue Resolved
> > > We have determined that this spike did not affect the performance or
> > > uptime of applications. If you feel we have incorrectly diagnosed this
> > > issue please inform us by posting in our developer forum."
> >
> > > Well, it did affect the performance and uptime of at least one of my
> > > (Python) applications, as reported in the following production issue
> > > (still in the new state):
> http://code.google.com/p/googleappengine/issues/detail?id=2837
> >
> > > Today, we are seeing the same spike (right now the chart is in a spike
> > > before 8AM and at about 650):
> http://code.google.com/status/appengine/detail/serving/2010/02/23#ae-...
> >
> > > And again, my app is having a lot of Deadline exceptions.
> >
> > > Looking at the logs, the thing that I think is most relevant is that
> > > my app only gets to spend about 2000 CPU ms before de 30000 ms period
> > > finished - so it's severely starved for resources - so starved that it
> > > doesn't even manage to load Django 1.1 before the Deadline kicks in.
> >
> > > Regards,
> > > Pedro Morais
>
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-- 
Ikai Lan
Developer Programs Engineer, Google App Engine
http://googleappengine.blogspot.com | http://twitter.com/app_engine

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