Seeing huge delays on task queue execution - 13sec+ per task

[Jan Zawadzki / Hapara]

Is anyone else seeing these delays?

Jan

[vlad]

I have been screaming about this for a looong time. The offcial position of GAE team is - we don't guarantee on time execution. Even though this issue is not about on time execution but rather about bugs/inefficiency of their scheduler. They just closed my ticket about that. Feel free to star

http://code.google.com/p/googleappengine/issues/detail?id=7185
http://code.google.com/p/googleappengine/issues/detail?id=4901

[Gopal Patel]

i think this happen only when they release a new version of app engine. so it linked to app wise upgrade.

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[Waleed Abdulla]

Agreed. More control over priority of tasks would be nice. I'd like to be able to designate a queue as high-priority so it's tasks execute at the same priority as user requests, or low-priority so they only execute when there are free instances and no other pending requests.

[stevep]

Gopal: Sadly your conclusion is entirely incorrect.

As Vlad noted, task queue execution can be highly unpredictable, and
has been for ages. Unfortunately this has been, and perhaps always
will be, a customer issue that GAE engineers/PMs never address. The
irony is that as Robert Kluin pointed out in his recently published
interview, task queues are a primary, standout feature of GAE. Like
much of GAE, however, the promise is there, the enterprise-level
polish is not. -stevep

[stevep]

Waleed: Made the best case I could for this exact functionality
perhaps a year ago, perhaps more. Starred an open ticket item Vlad had
created related to it. Fingers still crossed. -stevep

On Mar 27, 11:16 pm, Waleed Abdulla <wal...@ninua.com> wrote:
> Agreed. More control over priority of tasks would be nice. I'd like to be
> able to designate a queue as high-priority so it's tasks execute at the
> same priority as user requests, or low-priority so they only execute when
> there are free instances and no other pending requests.
>
>
>
>
>
>
>
> On Tue, Mar 27, 2012 at 6:48 PM, Gopal Patel <patelgo...@gmail.com> wrote:
> > i think this happen only when they release a new version of app engine. so
> > it linked to app wise upgrade.
>

[vlad]

steve, well said. I did not read Robert's interview but I also think of TaskQueue as a last "breakthrough" feature. Since then GAE had released a ton of stuff, but besides File/Blob API, most of it was ...meh - Just my 2c

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[Philip]

As far as I know Task Queue is built on top of the regular datastore.
How about providing HR Task Queue - a Task Queue built on top of high
replication datastore?

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>
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[Nicholas Verne]

This is incorrect. Task Queue is not built on the datastore at all.

[Vlad Troyanker]

Nick, can we count on fixing TaskQueue scheduling?

http://code.google.com/p/googleappengine/issues/detail?id=7185