New != Faster

[Abdullah Ibn Hamad Al-Marri]

On 6/4/07, Tim Daneliuk <tundra at tundraware.com> wrote:
> Chris wrote:
> > On 04/06/07, Colin Percival <cperciva at freebsd.org> wrote:
> >> Tim Daneliuk wrote:
> >> > Old   2 PIII @600Mhz           768K    26M/sec    4.11-stable/SMP
> >> > 50-60 min
> >> > New   Pent D (2 core)@3.2GHz   2G     50M/sec    6.2-stable/SMP
> >> > 40-50 min
> >> > Fast  2 Xeon @3GHz             3G    130M/sec    4.11-stable/SMP
> >> > 8 min
> >> >
> >> > Is the difference in speed
> >> > attributable to 4.11 being faster than 6.2?
> >>
> >> Close.  The difference in speed is due to the compiler in 4.11 being
> >> faster than the compiler in 6.2.  FreeBSD uses the gcc compiler, and
> >> between FreeBSD 4.11 and FreeBSD 6.2 that has been upgraded from 2.9
> >> to 3.4.  The general trend each time gcc is upgraded is that it takes
> >> 2x longer to compile code, but produces code which is 5% faster (as a
> >> result of "working harder" to find optimizations).
> >>
> >> FreeBSD 6.2 is faster than FreeBSD 4.11 for almost everything except
> >> compiling itself. :-)
> >>
> >> Colin Percival
> >>
> >> _______________________________________________
> >> freebsd-questions at freebsd.org mailing list
> >> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> >> To unsubscribe, send any mail to
> >> "freebsd-questions-unsubscribe at freebsd.org"
> >>
> >
> > What about all the following observations?
> >
> > slower network performance in 6.x especially worse under DDOS conditions.
> > slower disk performance especially under QUOTA.
> >
> > both of these have been confirmed numerous times by different people
> > so sweeping them under the carpet and saying they simply not true
> > would be wrong.  My observation of 6.x is that whilst it can exceed
> > 4.11 performance this is only because of more more powerful hardware
> > and in particular on SMP systems where 4.11 isnt optimised but for UP
> > and most older hardware the worst performance of post 4.11 is
> > highlighted greatly.
> >
> > In thoery shouldnt eg. a 6.2 system using a 3ghz core 2 duo be
> > multiple times faster then a pentium 3 500 running freebsd 4.11 due to
> > the more powerful hardware?
> >
> > Chris
>
> It will be of academic interest to me to see how people respond to this.
> Unfortunately - as documented in my original post - the 4.11 CD will
> not even boot on this new motherboard for some reason.  Given that, and
> that 4.x is no longer actively developed, I am forced to move to 6.x for
> my next server ...
>
>
>
> --
> ----------------------------------------------------------------------------
> Tim Daneliuk     tundra at tundraware.com

You will not regret it, and wait FreeBSD 7.0 real powerful SMPing
which done on it.

I run heavily MySQL 5.0.41 app on itm and it's way faster than running
it in 6.2-STABLE with C2D 6600 and 2 GB of ram.


-- 
Regards,

-Abdullah Ibn Hamad Al-Marri
Arab Portal
http://www.WeArab.Net/