On Mon, 11 Feb 2002, Andrew Morton wrote: >> This is great news. Linus has now added Robert Love's kernel preemption >> patch to the 2.5 tree! > As I'm sure those on this list have noticed (I've only rejoined recently), > the preemptive kernel is basically useless at this time. Worst-case > latencies are still in the 50-100 millisecond range, and the average > is only moderately improved. The comments and reactions in the > popular press are pretty amazing to someone who has actually performed > the measurements, trust me.
That is true. But still, I think it's good that low latency has got this much attention. Even if the preemption patches don't deliver as good latency figures as your ll-patch, it has shown that a _lot_ of people are interested in low-latency (or more accurately, getting rid of latency spikes that cause xruns in mp3 playback). This should be good ground for marketing patches that attack the long kernel code-paths. ;) -- http://www.eca.cx Audio software for Linux!
