On Mon, Nov 06, 2006 at 01:59:33PM +0100, Hemmann, Volker Armin wrote: > On Monday 06 November 2006 13:49, Jack Lloyd wrote: > > On Mon, Nov 06, 2006 at 01:05:31PM +0100, Hemmann, Volker Armin wrote: > > > lets ask the other way round. Why should it speed up anything to have > > > X>number of cores? Instead of a single thread per core, compiling > > > happily, you have two or more competing for one core and regularly kick > > > out each others data from the cache. > > > > To account for I/O wait states > > and how often does something wait for io and how often does some data is > purged from the cache, because the other make instance is activated? > > When I switched from j2 to j1, compiling did not take any longer - but the > box > way much more usable.
OK. <shrug> On my dual core machine, -j3 seems to be the sweet spot. Simply because something does not work for you does not mean it is going to be universally a bad idea. -- gentoo-amd64@gentoo.org mailing list
