parallel booting init in C - even larger speedup

Olaf van der Spek olafvdspek at
Mon Nov 14 14:35:46 UTC 2005

On 11/14/05, Olivier Sessink <lists at> wrote:
> Olaf van der Spek wrote:
> > Isn't an IO bottleneck 'solved' by using readahead?
> > And even without readahead, generating IO requests earlier means the
> > HDD may be able to serve them in a more efficient order.
> but you need also more context switches, which increases the overhead.
> So the maximum speedup is expected when you boot an IO-bound and a
> CPU-bound process in parallel.

True, but which scripts are completely CPU bound?

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