Linode vs AWS
I’m examining a Linode account in order to figure out how to switch the application its instances are running to AWS. The first challenge is that instance types in the main dashboard are described by arbitrary numbers (“UI Name” in the chart below), rather than a statistic about their resources or pricing. Here’s how those magic numbers line up to hourly rates and their corresponding monthly price caps:
|RAM||Hourly $||Monthly $||UI Name||Cores||GB SSD|
AWS T2 instances have burstable performance. M* instances are general-purpose; C* are compute-optimized; R* are memory-optimized. *3 instances run on slightly older Ivy Bridge or Sandy Bridge processors, while *4 instances run on the newer Haswells. I’m disergarding the G2 (GPU-optimized), D2 (dense-storage), and I2 (IO-optmized) instance types from this analysis.
Note that the AWS specs page has memory in GiB rather than GB. I’ve converted everything into GB in the following table, since the Linode specs are in GB and the AWS RAM amounts don’t seem to follow any particular pattern that would lose information in the conversion.
Hourly price is the Linux/UNIX rate for US West (Northern California) on 2015-12-03. Monthly price estimate is the hourly price multiplied by 730.
Linode and AWS do not compare cleanly at all. The smallest AWS instance to match a given Linode type’s RAM typically has fewer vCPUs and costs more in the region where I compared them. Conversely, the smallest AWS instance to match a Linode type’s number of cores often has almost double the RAM of the Linode, and costs substantially more.
Switching from Linode to AWS
When I examine the Servo build machines’ utilization graphs via the Linode dashboard, it becomes clear that even their load spikes aren’t fully utilizing the available CPUs. To view memory usage stats on Linode, it’s necessary to configure hosts to run the longview client. After installation, the client begins reporting data to Linode immediately.
After a few days, these metrics can be used to find the smallest AWS instance whose specs exceed what your application is actually using on Linode.