[danvittegleo]

With rattlesnakeos-stack, it uses spot instances and defaults to a c5.4xlarge which takes about 7-8 hours to build AOSP and Chromium (for an up to date webview) and equates to about ~$1 a build. I typically build on a c5.24xlarge instance which takes about 2.5 hours and costs about ~$2 per build. Unfortunately both AOSP and Chromium are massive projects that require a ton of computing power to build quickly. It's definitely still possible to do on less powerful machines, but it's just going to take a lot longer to do builds.

[hayd]

Is any of the build cached?

[danvittegleo]

In order to limit costs, everything is pulled from source on each build and there is nothing cached. This strategy takes advantage of the fact that AWS doesn't charge for ingress traffic and unfortunately puts additional load on Google's servers. I've attempted a few different strategies on caching AOSP and Chromium source trees, but since you have to incur the storage costs on an ongoing basis, it's just not very economical.