[fpc-devel] building fpc / fpmake and multicore cpu ?
Mattias Gaertner
nc-gaertnma at netcologne.de
Sat Oct 1 12:56:06 CEST 2011
On Sat, 01 Oct 2011 09:24:08 +0100
Martin <lazarus at mfriebe.de> wrote:
> I noticed, when I build fpc, then I get cpu usage between 70% and 100%.
> So it appears that both cores of my pentium are used.
No, it can simply mean that the OS moves the process around, which can
for example reduce cooling power.
> But when a package is compiled using fpmake, then it drops to 50%, so
> apparently only one core is used?
>
> Is that correct? Does the old Makefile driven compilation use both/all
> cores, while packages done via fpmake, are using one core only?
AFAIK the makefile does not use parallel compilation.
Mattias
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