> On 19 December 2012 04:32, Dennis Clarke wrote:
> >
> > That went very well and the compile took a nice long time, even on a
> quad core opteron :
> >
> > real 12255.97
> > user 10349.35
> > sys 1565.99
>
> Presumably this is without -jN? Why would you want to do that? The
> fact it's a quad-core is irrelevant if you only use one core.
Depends on how much trust you place in -jX for X>1 and in my case, not much, yet.
I am not in a rush, I have a few machines that take well over 168 hours to do a bootstrap and then a testsuite run. To me it is just a process sitting on a back burner simmering and I am fine with that.
As a fine example .. we have a testsuite run which just completed on this 2.6 GHz Opteron like so :
http://gcc.gnu.org/ml/gcc-testresults/2012-12/msg01762.html
sedna $ /usr/bin/time -p nice -n +19 gmake -k check
.
.
.
real 23347.63
user 14833.37
sys 7920.38
Six and a half hours on a 3 GHz Opteron. Not pretty but it works.
Dennis
ps : scary that it takes that long when I have two of these on RHEL 6.3 :
http://products.amd.com/pages/OpteronCPUDetail.aspx?id=353&f1=&f2=&f3=Yes&f4=&f5=&f6=&f7=&f8=&f9=&f10=&f11=&;
