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Re: Sysinst default root login shell

On Fri, Apr 13, 2012 at 12:21:59AM +0200, Johnny Billquist wrote:
> On 2012-04-12 23:58, Matthew Mondor wrote:
> >On Thu, 12 Apr 2012 23:04:33 +0200
> >Johnny Billquist<>  wrote:
> >
> >>Funny you should say that, while a CVS checkout of all of the NetBSD
> >>source tree have grown in time from about 20 minutes to about 5 hours on
> >>a VAX-8650 as we move from NetBSD 2 to NetBSD 5. Did we really improve
> >>performance, or did we only just get faster computers, while the code
> >>itself got slower?
> >
> >Faster hardware, but also software that adapts better to that hardware:
> >
> >Most of the performance improvements I was refering to happened
> >between netbsd-4 and netbsd-5, when Andrew Doran worked full-time on
> >performance and SMP:
> >
> >
> >This included changing a number of operations that were previously
> >executing in O(n) time to now execute in O(1) time, making MP-safe some
> >critical sections, not using the big lock anymore for MP-safe sections,
> >scheduler and interrupt processing changes, a new 1:1 POSIX threading
> >system that can more easy scale with SMP, etc.
> And yet, things are slower now... The only reason it appears faster
> is that the hardware is so much faster. But I'm sure some
> improvements have been done (I'm sure of it, it would be horrific
> otherwise), it's just that we've lost even more performance at other
> corners. Net result is a loss.

Posts like this completely disqualify your opinion on more technical
issues. Please upgrade to RetroBSD. It will allow the discussion about
this to turn to someelse than code historic reasoning.


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