Do you have any evidence to support your claim? My understanding is that containerized processes are theoretically the same as any other process on the system in terms of runtime performance.
In plan9 they are exactly the same, not theoretically. Isolation happens on a file system level (everything is a file, but truly, not a "special device file").
While it's practically not possible to compare performance, just the fact that this is a part of the initial design and a core of Plan9 vs adhoc feature (actually ported from Plan to Linux) is enough to speculate on performance.
>Linux namespaces were inspired by the more general namespace functionality used heavily throughout Plan 9 from Bell Labs.
> While it's practically not possible to compare performance, just the fact that this is a part of the initial design and a core of Plan9 vs adhoc feature (actually ported from Plan to Linux) is enough to speculate on performance.
It really doesn't. For all we know, because the plan9 version has to be more general it is much slower than the ad-hoc version.
