imeoer

The issue has been fixed in latest smoke test.

We can use trace to analyze where are the main time consumption, and then make optimization, the points that I can think of so far: 1. concurrently do blake3/sha256 hash...

It seems we can disable bootstrap/digest validation first, and then improve the speed of `tree.apply`.

@yawqi Thanks for the test, how about `zstd+blake3`?

The summary for your test @yawqi: | compressor | digester | build time | blob size | | ---- | ---- | ---- | ---- | | zstd | sha256...

We can track the progress of docker and snapshotter integration, however there are still many users deploying the earlier docker engine.

Let's try use containerd snapshotter in latest docker release.

Hi @loheagn, would you be interested in looking at this?

A similar issue: https://github.com/containerd/nydus-snapshotter/issues/255

@loheagn Cool, let's move forward!