Hi all,

I too have seen strange behavior following the datastore issue (#13551) - 
and this is going on every since.

Instances are a bit crazy going up and down, I've seen latency spiking 
(i.e. 20 seconds for a task that takes < 1sec and is datastore/memcached 
bound), memcache seems kind of "exhausted", tasks staying in queues for 2 
minutes, etc.

All this behavior is definitely *very* different than before #13551 (which 
may be irrelevant but I'am mentioning it only as a time milestone).
 
Can you please let us know if you're experiencing issues with EU region?

On Wednesday, February 22, 2017 at 9:37:16 PM UTC+2, Linus Larsen wrote:
>
> After some digging I found out that we've made some modifications on the 
> mobile app, which makes it do several ajax requests rapidly.
> The result became somewhat strange.
>
> 1. Request1 starts a new instance
> 2. Request2 also starts a new instance since it takes aprox 20 secs to 
> start a new instance, and the instance started in request1 isn't ready yet
> 3. Request3 also starts a new instance since the instance started in 
> request1 isn't ready yet
>
> Suddenly we have 3 instances running, and the response time wasn't 
> improved since the startup time of each instance it so slow. 
> I guess we can improve the behavior fiddling a bit with max/min-pending 
> and min-idle instances settings.
>
> But. As it seems, started instances are shut down very quickly, more 
> quickly than they used too.
>
> FYI, it all started last week (and it not just me who noticed these 
> changes)
>
> https://code.google.com/p/googleappengine/issues/detail?id=13551
>
> And it keep on going with different kinds of issues, today pub sub calls 
> timed out, memcache was totally down, datastore failures etc.
> Very shaky, and it makes me wondering if Google is doing som changes in 
> the EU region.
>
>
>
>
>
>
>
>
>
>
>
>
> Den fredag 17 februari 2017 kl. 16:49:29 UTC+1 skrev George (Cloud 
> Platform Support):
>>
>> Hello Linus, 
>>
>> You seem to have 3 projects running at this time. Which one of the 3 is 
>> affected by the 100 instances for no reason at all behavior change? For 
>> confidentiality, you can send us the project name by private email. 
>>
>> None of the 3 projects start more than a maximum of 17 instances at a 
>> time. When did this change in behavior occur, exactly? 
>>
>> Looking at your versions in the console, one notices that "automatic" is 
>> chosen as value for the "Min Idle Instances" and "Max Idle Instances" 
>> parameters.   
>>
>

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