About Freebsd 7.0 versus 6.3

Garrett Cooper youshi10 at u.washington.edu
Fri Nov 9 01:35:46 PST 2007

Dag-Erling Smørgrav wrote:
> "Aryeh Friedman" <aryeh.friedman at gmail.com> writes:
>> On Nov 8, 2007 11:55 AM, Expresso Digital ISP <cesar at expresso.com.br> wrote:
>>> I'd like to know what is the diference between 7.0 and 6.3 and why create a
>>> newest version and after old version.
>> 6.X is the last of versions meant primarilly for single processing
>> machines (with some after thought payed to multiprocessing).
>> 7.X is the beginning of the versions specifically designed with
>> multiprocessing/cores in mind
> Will you please stop spouting nonsense?

WTF? Dude... 7-CURRENT has several improvements to MP systems, but it's 
not meant to be the 'first non-SP designed OS'. Please, get your facts 

There are several other improvements coming with 7-CURRENT though, 
mainly dealing with Mac support, some security auditing (I believe), and 
other SoC / important developer project work, as well as improved 
hardware support for some items like SATA and HD audio I believe. And 
yes, there's the big [ULE] scheduler / giant lock removal improvement 
which helps MP systems scale better with 7-CURRENT.

But that doesn't mean that the 4BSD scheduler doesn't do MP systems 
well. It just sucks at it compared to ULE =P.


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