BFS vs. mainline scheduler benchmarks and measurements

This I believe is something that was more of an issue than it is now, so CPU's can ramp up their speed much quicker than they could've done before. One problem was for example that higher CPU speeds requires higher volts which can cause delays with the CPU stalling while the voltage steps up. Now instead the voltage will be pushed up a split moment before the frequency is ramped up, so there's no stall. Otherwise, it's all down to the CPU, with different models taking different amounts of time to change frequency, it can make sense to jump to the highest frequency when the usage goes up and then slow it down if needed (such as the ondemand governor does) or scale it up step by step. You want to try set a lower watermark where responsiveness is important, so CPU's always running at say twice the speed that you need it, so you always have room to move into while you wait for the cpu to speed up (eg, when load goes from 50% to 80%, the CPU speeds up to bring the load back down to 50%. Only if loads reaches 100% have you not sped up quickly enough). Of course if you wish to conserve more power, you run the CPU at speeds closer to load. In Linux, there're many tuneables for you to play with to get the responses you wish (/sys/devices/system/cpu/cpu?/cpufreq/<governor>). To see what's available on the Windows platform, there's a free download you can find by googling rmclock that proper spoils you for configuration options. There's no one rule that has to fit all, during boot up the kernel will test transition speeds and set defaults accordingly.