Re: Scaling noise

William Lee Irwin III
2003-09-03T17:15:05Z

On Wed, Sep 03, 2003 at 08:23:44AM -0700, Martin J. Bligh wrote:
> Would be real interesting to see this ... there are actually plenty of
> real degredations there, none of which (that I've seen) come from any
> scalability changes. Things like RMAP on fork times (for which there are
> other legitimite reasons) are more responsible (for which the "scalability"
> people have offered a solution).

How'd that get capitalized? It's not an acronym.

At any rate, fork()'s relevance to performance is not being measured
in any context remotely resembling real usage cases, e.g. forking
servers. There are other problems with kernel compiles, for instance,
internally limited parallelism, and a relatively highly constrained
userspace component which is impossible to increase the concurrency of.

-- wli