I've been using Azure VMs for several years, specifically the e4s_v5 model for development across various projects. Recently, I've noticed what feels like performance degradation, which I jokingly refer to as 'shrinkflation.' The e4s_v5 was always reliable and responsive, but now it feels sluggish, and I'm finding the need to upgrade to e8s_v5 just to achieve the same performance levels. This is evident in build times as well. Is anyone else experiencing similar issues with Azure VMs?
4 Answers
Have you run any benchmarks? Even synthetic ones could provide insight into what's going on. It might not be the VM itself that's slowing down.
There’s definitely been chatter about CPU vulnerabilities lately that might affect performance after firmware updates. It’s a mess, and I wouldn’t be surprised if Microsoft has to patch this before we even notice. I think it’s worth keeping an eye on!
I relate to your struggle! My Azure Function App used to respond within 20ms, but now I'm clocking 3 seconds. Same code, same triggers… performance just plummeted. Microsoft's suggestion was to switch to a pricier plan for better performance, which isn't ideal. It’s frustrating.
If your dev VM is part of a domain or managed by an MDM, new policies might have been introduced without your knowledge. Moreover, if you're hitting the CPU limits on e4, consider scaling up to a d8 instead of e8. You pay a lot more for RAM in e8 without needing it!
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