Here are logs from three consecutive task executions over the past weekend, with only identifying information removed. You'll see that each task completes in a few milliseconds, but are 20 seconds apart (remember: I've already checked my queue configurations, nothing else is running on this backend, and I later solved the problem by setting countdown=1 when adding the task). I don't see any pending latency mentioned.
0.1.0.2 - - [27/Jan/2012:18:33:20 -0800] 200 124 ms=10 cpu_ms=47 api_cpu_ms=0 cpm_usd=0.000060 queue_name=overnight-tasks task_name=15804554889304913211 instance=0 0.1.0.2 - - [27/Jan/2012:18:33:00 -0800] 200 124 ms=11 cpu_ms=0 api_cpu_ms=0 cpm_usd=0.000060 queue_name=overnight-tasks task_name=15804554889304912461 instance=0 0.1.0.2 - - [27/Jan/2012:18:32:41 -0800] 200 124 ms=26 cpu_ms=0 api_cpu_ms=0 cpm_usd=0.000060 queue_name=overnight-tasks task_name=4499136807998063691 instance=0 The 20 seconds seems to happen regardless of length of task. Even though my tasks mostly complete in a couple minutes, I do have cases where they take several minutes, and I don't see a difference. Of course, when a task takes 5-10 minutes to complete, I'm going to notice and care about a 20-second delay much less than when I'm trying to spin through a few tasks in a minute (which is a real-world need for me as well). When reading up on pull queues a while back, I was a little confused about where I would use them with my own backends. I definitely could see an application for offloading work to an AWS Linux instance. But in either case, could you explain why it might help? I saw you mention in a separate thread how M/S can perform differently from HRD even in cases where one wouldn't expect to see a difference. When I get around to it I'm going to create a tiny HRD app and run the same tests through that. I also wonder if M/S could be responsible for frequent latencies in my admin console. Those have gotten more frequent and annoying the past couple of months ... -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-appengine/-/lbNQRQdSx0AJ. To post to this group, send email to google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
