[arch-general] Can you test machine to set --jobs[=N] from w/i PKGBUILD?

[Calvin Morrison]

Often higher cores benefit high I/O applications. If gcc is bottlenecking
at reading and writing,  sometimes more threads will help.
On Apr 1, 2012 7:49 AM, "Vitor Garcia" <vitorlopesgarcia at gmail.com> wrote:

> On Sun, 01 Apr 2012 13:37:27 +0200
> Florian Pritz <bluewind at xinu.at> wrote:
>
> > Simple tests (building readline because it's small) with -j4 and -j8
> > on my i7-920 show that -j8 is around 20% faster than -j4. IIRC
> > wikipedia states that HT core can increase performance by up to 30%.
>
> This is nice to know. I work with mechanichal engineering simulations
> and we have noted that using more threads then avaiable processors (we
> have a  2 x 6 cores processors that has HT, so it looks like a 24 cores
> server) increases the calculation time on the softwares we have. I
> assumed that the same would apply to any intensive task, and we have
> even disabled HT on the BIOS. Perhaps I'll enable it again.
>