![]() | |||||||||||||
Messages in this thread |
Linus Torvalds writes: > Yes, it happened during the switch-over to a software task-switch > routine, but the reason the numbers got worse for some people is simply > that I screwed up the floating point save code, and it saved _every_ > time through instead of doing the lazy save it was meant to do. > > The effect of this is not huge, but it's certainly noticeable. With > that fixed, the software context switch is pretty comparable to the > hardware one. > > 2.1.123 should have this context switch slowdown fixed. I tried the patch you sent, and it makes no noticable difference on my PPro 180 (less than 1 us). Regards, Richard.... - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
| Last update: 2005-03-22 13:44 [from the cache] ©2003-2008 | |||||||||||||