I've got a dynamic backend just for sending mail (billing enabled).
Mails are enqueued elsewhere, not on this backend, practically
instantly. The queue is configured like this.
- name: mail
rate: 360/m
bucket_size: 40
retry_parameters:
task_age_limit: 1d
min_backoff_seconds: 20
And the dashboard figures it out like this.
mail 360/m 0.75/s 40.0
Slower than configured at 0.75/s enforced rate, but still acceptable,
because mails are send much slower.
2011-08-15 16:04:28.329 /mail/ 200 94ms 0cpu_ms 0kb instance=0
2011-08-15 16:04:08.254 /mail/ 200 26ms 23cpu_ms 0kb instance=0
2011-08-15 16:03:48.250 /mail/ 200 30ms 23cpu_ms 0kb instance=0
2011-08-15 16:03:28.258 /mail/ 200 44ms 0cpu_ms 0kb instance=0
2011-08-15 16:02:30.802 /mail/ 200 317ms 0cpu_ms 0kb instance=0
2011-08-15 16:02:30.770 /_ah/start 404 89ms 70cpu_ms 0kb instance=0
The previous run worked better, but you'll still notice the huge delay
between the first and second mail.
2011-08-15 13:02:27.016 /mail/ 200 53ms 0cpu_ms 0kb instance=0
2011-08-15 13:02:26.676 /mail/ 200 45ms 0cpu_ms 0kb instance=0
2011-08-15 13:02:26.545 /mail/ 200 248ms 23cpu_ms 0kb instance=0
2011-08-15 13:02:25.833 /mail/ 200 217ms 0cpu_ms 0kb instance=0
2011-08-15 13:01:50.969 /mail/ 200 347ms 0cpu_ms 0kb instance=0
2011-08-15 13:01:50.931 /_ah/start 404 200ms 70cpu_ms 0kb instance=0
What could be the reason? There are no errors on the backend in the
past 7 days.
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