On Sun, 01 Apr 2012 13:37:27 +0200 Florian Pritz <bluewind@xxxxxxx> 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.
