On Tue, Jan 05, 2016 at 10:57:13AM -0800, Dave Täht wrote: > Context switch time is probably one of the biggest hidden nightmares in > modern OOO cpu architectures - they only go fast in a straight line. I'd > love to see a 1ghz processor that could context switch in 5 cycles.
It's called hyperthreading? ;-) Anyway, the biggest cost of a context switch isn't necessarily the time used to set up registers and such. It's increased L1 pressure; your CPU is now running different code and looking at (largely) different data. /* Steinar */ -- Homepage: https://www.sesse.net/ _______________________________________________ Bloat mailing list [email protected] https://lists.bufferbloat.net/listinfo/bloat
