I have an app running on a backend. It has 11 tasks. The first one is
started by /_ah/start and it, in turn, starts the other ten, the worker
tasks. The worker tasks have this structure:
while True:
# Do important stuff
# time.sleep (30)
The execution behavior on app engine is the same every time. The scheduling
task runs and enqueues the 10 worker tasks. The first seven of the ten that
are enqueued start running and execute correctly. The last three sit in the
queue, never running. The app also stop responding to HTTP requests,
returning 503 status codes. The logs do not show that my http handlers
getting invoked.
The worker task queue is configured with a maximum rate of 1/s and 2
buckets. It's curious that the admin console shows that the enforced rate
is 0.1 sec. Since the tasks run forever, the don't return unsuccessful
completion codes. And the cpu load is negligible. The workers mostly do a
URL fetch and then wait 30 seconds to do it again.
The logs are not helpful. I don't know where to go to find diagnostics that
will help me figure it out. I'm testing in a free account. Could there be a
limit of 8 tasks executing at one time? I'd like to run quite a few more
tasks in parallel eventually.
Thanks for any advice you can give me.
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