Messages in this thread | | | From | Dieter Nützel <> | Subject | Re: 0(1)-patch, where did it go? | Date | Thu, 11 Apr 2002 05:44:13 +0200 |
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On Donnerstag, 11. April 2002 :30, Robert Love wrote: > On Wed, 2002-04-10 at 23:27, Dieter Nützel wrote: > > But I see some kernel hangs with preemption on UP. > > It happens only during "make bzlilo" (the linking stage). Robert? > > Apart from that it works well. > > It is probably lock-break, not preempt. I don't have lock-break patches > for 2.4.19-pre yet. Lock-break/low-latency and the more general lock > breaking / explicit schedule work is very reliant on the version of the > kernel they were designed against. This is why this approach is not a > proper long-term solution ...
OK, thanks Robert will try without it after some sleep.
But preemption without lock-break on 2.4 is like running without preemption. The general latency problem with O(1) for 2.4 still stands. Do you have similar observations with the current -ac tree? You should have my numbers.
I only would bring your focus somewhat back to 2.4 'cause 2.6 is so far...
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