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> and also to be unable to share executable pages (not a huge loss for a 2MB executable, a huge loss for a 100MB executable). I don't think people care about t

> and also to be unable to share executable pages (not a huge loss for a 2MB executable, a huge loss for a 100MB executable). I don't think people care about that nowadays, seeing how popular Docker containers are. I think Docker containers already make it so that you cannot share executable memory between different containers because each one runs in its private namespace.

beagle3 9y ago
Do namespaces separate file system caches? That would surprise me.
- viraptor 9y ago
  The only one that could matter here would be mnt. And since bind mounts normally wouldn't cache pages separately, I don't think that would happen for the namespaces either. Happy to be proven wrong though. More specifically I wouldn't expect "free -m" to produce different result depending on the namespace it's run in.
- ptman 9y ago
  IIRC it depends on which storage backend for docker you use: https://web.archive.org/web/20170405122924/https://developers.redhat.com/blog/2014/09/30/overview-storage-scalability-docker/ https://web.archive.org/web/20170405122924/https://developer...