At CodeSandbox we use Firecracker for hosting development environments, and I agree with the points. Though I don't think that means you should not use Firecracker for running long-lived workloads.

We reclaim memory with a memory balloon device, for the disk trimming we discard (& compress) the disk, and for i/o speed we use io_uring (which we only... See more

At the beginning I said I didn't think the Alto Architecture is better than current approaches. The main reasons are the things that Alto did not have:

• No virtual memory or any memory protection


• No executive mode, to support a trusted operating system or contain untrusted code


• No virtualization capability


• No parallelism


• No caches

As a consequence of the... See more