Amazon EC2 t2.nano instances

If you thought t2.micro was a tiny machine, I have news for you – Amazon announced t2.nano instance type.  It features 512 MB of RAM, 1 vCPU, and up to two Elastic network interfaces.  Price for on-demand instance – $0.0065 per hour.

This instance type is perfect for small websites, developer and testing environments, and other tasks which don’t require a lot of resource.

GitHub redesign

github interface

About a month ago, GitHub revealed its redesigned interface.  It gets better and better with every iteration.  But this time also got a feeling of deja vu, whic took me a while to figure out.  And finally I did.  The navigation menu went from right side to the top.  And it’s not the first time it’s there.

Here is a link to the Refactoring GitHub’s Design blog post (I linked to it before), which explains some of the design decisions and the menu on the right.  Among other things, there’s a screenshot of how things used to be before.  Have a look.

old-github

It’s not identical, but it’s pretty close.

CPU Steal Time. Now on Amazon EC2

Yesterday I wrote the blog post, trying to figure out what is the CPU steal time and why it occurs.  The problem with that post was that I didn’t go deep enough.

I was looking at this issue from the point of view of a generic virtual machine.  The case that I had to deal with wasn’t exactly like that.  I saw the CPU steal time on the Amazon EC2 instance.  Assuming that these were just my neighbors acting up or Amazon having a temporary hardware issue was a wrong conclusion.

That’s because I didn’t know enough about Amazon EC2.  Well, I’ve learned a bunch since then, so here’s what I found.

Continue reading CPU Steal Time. Now on Amazon EC2