URGENT: Massive increase in URLFetch latency?

[Yahel Carmon]

Over the last 2 days, I'm seeing a massive increase in latency in URLFetch requests. What used to be roundtrips of 200-400ms (consistently over the past few years) has jumped to between 3000ms and 6000ms, regardless of the fetched URL.

My application relies on URLFetch, and as a result, this increase in latency is leading to huge increases in costs for me.

Here's an example screenshot from AppStats: https://www.dropbox.com/s/ki9ylw0peacygae/Screenshot%202015-02-01%2015.46.44.png?dl=0

Is anyone else seeing this? Is there anything that can be done?

[Yahel Carmon]

Following up:

This was resolved. Turns out that AppStats was not accurate. Instead, enabling the Monitoring Traces correctly identified a specific URLFetch destination as the culprit, not an infrastructural problem.