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On Fri, 20 Sep 2002, Bill Huey wrote: > The JVM with incremental GC is being targetted for media oriented tasks > using the new NIO, 3d library, etc... slowness in safepoints would > cripple it for these tasks. It's a critical item and not easily address > by the current 1:1 model. actually, in the previous mail i've outlined a sensible way to help safepoints in the kernel, for the case of the 1:1 model. I'd not call that 'not easily addressed' :-) there's an even more advanced way to expose preempted user contexts in the 1:1 model: by putting most of the the register info (which is now dumped into the kernel stack) into a page that is also mapped into user-space. This too introduces (constant) syscall entry/exit overhead, but can be done if justified. Ingo - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | ||||||||||||
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