Create a Podman performance tips tutorial

[eriksjolund]

Is this a BUG REPORT or FEATURE REQUEST? (leave only one on its own line)

/kind feature

Description

Add a Podman tutorial that discusses factors that might impact the speed of Podman.

Some sketchy ideas:

• use --uidmap and --gidmap instead of the --volume option :U
• use :O to avoid local disk
• use a fast OCI runtime (crun)
• use a fast storage driver (native overalyfs)
• reuse the package repository cache with an overlay mount when building container images
• network performance for rootless Podman
  • slirp4netns comes with a performance penalty
  • use socket activation to avoid slirp4netns
  • maybe use rootful Podman with --user $user (where $user != 0) to avoid slirp4netns
• choosing a host file system (is reflink support important?)
• whether to use the podman run option --new
• use smaller container images
• lazy pulling of container images
• benchmark tip: create a separate account with sudo useradd testuser && sudo machinectl testuser@

[github-actions]

A friendly reminder that this issue had no activity for 30 days.

[github-actions]

A friendly reminder that this issue had no activity for 30 days.

[afbjorklund]

Or maybe "use root" ? 😀

At least it could be interesting to at least mention the cost of rootless, when discussing the mitigations ?

Preferably with some benchmarks.

• Just curious: has anyone done a build performance comparison between podman and docker? #15819