* Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx> wrote: > On Wed, 26 Aug 2009, Peter Zijlstra wrote: > > > On Wed, 2009-08-26 at 11:41 -0400, Christoph Lameter wrote: > > > On Wed, 26 Aug 2009, Peter Zijlstra wrote: > > > > > > > Why waste a whole cpu for something that could be done by part of one? > > > > > > Because of latency and performance requirements > > > > Latency is the only one, and yes people have been using hacks > > like this, I've also earlier mentioned RTAI, RTLinux and > > L4-Linux which basically do the same thing. > > > > The problem is, that its not linux, you cannot run something on > > a these off-cores and use the same functionality as linux, if > > you could it'd not be offline. > > Right. We discussed this. Why are you repeating the same old > arguments? The thing is, you have cut out (and have not replied to) this crutial bit of what Peter wrote: > > The past year or so you've been whining about the tick latency, > > and I've seen exactly _0_ patches from you slimming down the > > work done in there, even though I pointed out some obvious > > things that could be done. ... which pretty much settles the issue as far as i'm concerned. If you were truly interested in a constructive solution to lower latencies in Linux you should have sent patches already for the low hanging fruits Peter pointed out. Ingo -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
