Performance Related Question

Michael Ross gmx at
Wed Feb 27 22:28:06 UTC 2013

On Wed, 27 Feb 2013 23:05:44 +0100, Frederico Costa <fredports at>  

> Hi everyone...
> I have a kind of interesting question when comes to performance of
> FreeBSD in different HW. i am not trying to come up with a scientific
> reason for measuring performance. :-)
> It is just a curiosity, and of course to see if i understand it and
> improve performance of my systems.
> i am running 2 systems at the moment, lets call them S1 and S2,
> running FreeBSD 9.1-RELEASE-p1 amd64:
> S1:
> Intel Core2 Duo E6550 @ 2.33GHz
> 500GB disk (not important probably just for reference)
> S2:
> 2x Dual-Core AMD Opteron 2216 2.4GHz
> 14GB Ram
> 320GB disk (not important probably just for reference)
> Both the systems are running more or less the same sw, apache, imap
> server, postfix, and the needed perl/php/python and running very light
>   load. Also both are using a GENERIC kernel and not running X, they are
> just text based :-)
>  From the cpu performance index are for s1: 1501 and
> s2: 1518, so very similar.
> As i felt the AMD system seemed slower when comes to compiling, i just
> done a "performance test" which was "make buildworld" on both of
> systems from scratch and the times are:
> S1: 2h 12m
> S2: 2h 59m

If I read you right, you didn't ``make -jX buildworld'',
with X being the number of processes to spawn,
so you used just one core on either machine.

Buildworld does a lot of I/O, so disk speed is relevant.



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