Ikai,

On occasion I execute thousands of tasks.  Works great too.

But, it seems like Task Queue Stored Task Bytes does not reset very quickly.

Currently my Task Queue shows (and I have 0 Tasks in any Queues.. and
haven't for over 10 minutes):

Task Queue Stored Task Count    136,603 of 200,000,000
Task Queue Stored Task Bytes    124,768,866 of 104,857,600

Recently I just ran under 1,000 tasks, and a few hours ago I was running
many other tasks.. but they all run and finish within 3 minutes.. so it
seems strange that the Stored Task values keep increasing..

How often are these values reset?  Are they not really reset as soon as the
Tasks in a queue are finished or purged?

Thanks for any information.


Eli

On Wed, Oct 13, 2010 at 5:42 PM, Ikai Lan (Google)
<[email protected]<ikai.l%[email protected]>
> wrote:

> Hey everyone,
>
> We're working on moving Task Queues out of labs/experimental for an
> upcoming release slated for November. One of the requirements for doing so
> is to better enforce the Task Queues storage quota. The documentation
> describes this quota as storage for data for tasks that have not yet
> executed:
>
> http://code.google.com/appengine/docs/quotas.html#Task_Queue
>
> Currently, this quota is not enforced, and it is possible for applications
> with backed up task queues to exceed this quota without running into quota
> denials. Check your admin console's quota page for your application to see
> if you are reaching or exceeding this quota. If so, you'll have the
> following options:
>
> 1. Allocate more storage quota to taskqueue storage by updating:
>          - total_storage_limit in queue.yaml for Python applications
>          - TotalStorageLimit in queue.xml for Java applications.
>         Note: you may need to buy more disk quota if there's not enough
> quota for datastore, blobstore and taskqueue storage altogether.
>
> 2. Fix backed up queues using one of the options below. You will recognize
> these as queues with high numbers of tasks (typically >2000).
>         - Purge backed up queues (an easy button click in admin console's
> Queue Details page for the queue).
>         - Increase the execution rate and let your app work through the
> backlog. To do this, edit queue.yaml (or queue.xml for Java apps) and alter
> the rates on the queues. You can set a higher bucket size than the default
> (currently 5) to maximize throughput.
>         - Reduce the rate at which new tasks are added to queues. This will
> involve some editing of app code.
>
> It can take a few hours to update the admin console after the quotas have
> been updated.
>
> We'll post a reminders to the App Engine blog as well as to this thread as
> the release nears.
>
> --
> Ikai Lan
> Developer Programs Engineer, Google App Engine
> Blogger: http://googleappengine.blogspot.com
> Reddit: http://www.reddit.com/r/appengine
> Twitter: http://twitter.com/app_engine
>
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