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by akamaka 5999 days ago
It's pretty disappointing how these types of stories get parroted around the web, without any valuable research added.

As an EC2 user, I'd like to see less words and more measurements. Amazon has dozens of datacenters, probably each containing dozens or hundreds of independent sub-nodes, but we don't have any data regarding who is affected. In fact, Cloudkick hasn't given us any information regarding how they sampled their data.

I know that my EC2 instance isn't experiencing latency problems, so is it possible that a small number of nodes have developed problems, and that is skewing the average?

Anyone with some useful information, please share!

1 comments

I'm not sure if it's useful (and it's only a guess) but I think there are two mechanisms at work here:

1. Minor technical problems at Amazon affecting [at least] a few vocal customers

2. Rackspace running a PR campaign in favor to their newly launched cloud product

I'm not sure to what degree these two are connected but the timing seems a bit suspicious, with a bunch of pseudo-benchmarks (paid by rackspace) cropping up almost at the same time as these reports about EC2 problems.

As a matter of fact there has always been some variance in EC2 instance performance, as anyone who has run more than a few nodes can confirm. It's the nature of the beast.

None of the reports I have seen provided convincing data for serious large-scale problems. A peek on a few hundred instances simply doesn't cut it when amazon is said to be running around a million of them. To add a datapoint of my own; we are running almost a hundred 24/7 instances here for batch media processing and I can't see a difference in performance between now and November'09.

And even if the reports are true I'm not exactly worried. Amazon is the first and largest cloud operator, so it's just natural that they hit scaling barriers before others do. If there are problems they will fix them and move on.

Ofcourse all this sounds much more exciting when you wrap it up under a sensational headline, along with a few meaningless but colorful graphs...