Messages in this thread | | | From | Tim Connors <> | Subject | Re: [RFC v1] Tunable sched_mc_power_savings=n | Date | Sat, 28 Jun 2008 21:35:32 +1000 |
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Andi Kleen <andi@firstfloor.org> said on Fri, 27 Jun 2008 10:06:28 +0200: > Peter Zijlstra wrote: > > disappeared then I'd call that a huge usability regression. Basically > > making ondemand useless. > > > > /me checks,.. > > > > Yeah, on F9, my opteron runs at 1GHz when idle, but when I start distcc, > > which like said runs on nice 19, the cpu speed goes up to 2.4GHz. > > Ok distcc is a special case,
No it's not. Most compute heavy jobs most people run would be better off being done sooner rather than later, otherwise you might as well go out and buy a 100MHz computer. But most users also want "nice" to do what was intended of it -- make one app not steal *any* CPU cycles from another app that would really rather those CPU cycles right now (yes, I know that long running CPU jobs theoretically become lower priority so steal less, and in theory, there is no difference between theory and practice. But in practice, there is, and these long running jobs still impact on desktop and ssh interactivity)
I end up nicing opera and firefox half the time because I'm sick of their CPU leaks. It doesn't mean I don't want them to finish their screen updating sooner.
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