Is the RAM your paying for dedicated or burst?

June 6, 2013 3.5k views
For example, on the lowest level plan you get 512mb, is the actual RAM 256mb with a 256mb burst?
8 Answers
Swapping on SSD will still be terrible, just not as bad as on spinning disks. RAM access latency is measured in single digit nanoseconds, SSD access latency is 50-100 microseconds, HD access latency is 11-20 milliseconds. So, SSDs are 200x quicker to respond than harddrives, but still about 10,000 times slower than RAM.
All RAM is dedicated to your droplet. The kernel does take a bit of RAM so you'll end up with ~490MB memory on the 512MB droplet.
@sb73542 you can set up swap on your droplet: https://www.digitalocean.com/community/articles/how-to-add-swap-on-ubuntu-12-04
by Etel Sverdlov
Linux swaps allow a system to harness more memory than was originally physically available. Here's how to set up a linux swap file on Ubuntu 12.04
Ah, interesting option. How is swap performance on SSD? I imagine it's considerably closer to that of actual RAM.

Any instructions for CentOS / Debian?
The Ubuntu article should work on Debian. We have another article for CentOS: https://www.digitalocean.com/community/articles/how-to-add-swap-on-centos-6
by Etel Sverdlov
Linux swaps allow a system to harness more memory than was originally physically available. Here's how to set up a linux swap file on CentOS 6
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