On 12.03.2015, stan wrote:
When I build firefox nightly with -j6, just at the end of the export phase, and before the compile starts, I see all 6 cores maxed out. Once the compile starts, it is back to a single core equivalent. The Gentoo users seemed to suggest that this was a flaw in the firefox build process, though, and not the fault of the scheduler.
There are some programs which encounter serious trouble when using more than 1 compile process. Don't remember all, but audacity is an example. So the "flaw" could be a feature..