Starting Sunday afternoon (April 17, PDT) I noticed a huge slowdown across all of my WebJobs. I let it go until yesterday, hoping it was a temporary problem. Yesterday I dug into the problem and narrowed it down to our Service Bus calls. They're taking at least one order of magnitude longer than before. This is most noticeable when completing messages (message.CompleteAsync()) but receiving messages is also quite a bit slower than before. Completing just one message takes between 5 and 20 seconds!
I'm on the US West region. The Azure status page shows no problems for Service Bus, but I'm wondering if something's been missed. Can someone check and verify there are no problems? I don't believe this is on my end. I have two Service Bus namespaces, one for test and one for production, and only the production one seems to be affected.
I followed some advice from someone experiencing a similar problem last year (http://stackoverflow.com/questions/29425653/azure-service-bus-queue-extremely-slow) and recreated all of the queues. This hasn't resolved the problem. We're not using partitioned queues, but our throughput isn't that huge (~3 messages per second across each queue).
We're hoping this can be looked into without having to pay for 6 months of support, since I believe this isn't on our end. I'd be happy to provide more info if needed...just let me know. Thanks much for your time!