On Wed, Apr 18, 2007 at 04:40:17PM +0300, Yossi Kreinin wrote: > Sean O'Rourke wrote: > > > >Why is it that we have "nice" for our mostly-idle CPUs, but no > >way to say "sorry, Dashboard, you only get 30 megs -- deal with > >it"? It's only been, what, a decade since CPU speed has been all > >but meaningless? I'm normally a big fan of the best technology > >of the 70s and 80s, but in this case... > > > > An even simpler feature I miss is a way to say "please always leave me 5% > of the CPU and 5% of RAM so that when a process decides it needs all the > system resources and then some I can kill it without killing everything > else".
Don't forget the magic which allows the OS to know that certain programs are allowed to use that reserved 5% of RAM and CPU, otherwise you'll just have reduced your RAM and CPU rather than reserved it. A combination of "Don't allow any process to use more than 75% or RAM and don't page in from swap for any process at a rate greater than 50% of available IO" would be a pretty good combination I reckon. Obviously it would need to be configurable, but at least it would be a start. -- John Tobin "The day I come in front of the Gartner audience and say we have a better Unix than Linux, that'll be a good day." -- Steve Ballmer, Microsoft CEO, during his keynote Q&A session at the Gartner Symposium in Orlando, Florida, 2005/10/19
