On Saturday 08 April 2006 22:28, Serge E. Hallyn wrote:
> This is something we've been discussing - whether to use a single
> "container" structure pointing to all the namespaces, or put everything
> into the task_struct. Using container structs means more cache misses
> and refcounting issues, but keeps task_struct smaller as you point out.
The more cache misses argument seems bogus to me. If you consider
the case of a lot of processes with lots of shared name spaces
the overall foot print should be in fact considerable less.
> The consensus so far has been to start putting things into task_struct
> and move if needed. At least the performance numbers show that so far
> there is no impact.
Performance is not the only consider consideration here. Overall
memory consumption is important too.
Sure for a single namespace like utsname it won't make much difference,
but it likely will if you have 10-20 of these things.
>
> iirc container patches have been sent before. Should those be resent,
> then, and perhaps this patchset rebased on those?
I think so.
-Andi
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