Messages in this thread | | | Date | Mon, 21 Aug 2006 13:02:20 +0200 | From | Wolfgang Erig <> | Subject | Re: Fw: Regression with hyper threading scheduling |
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On Mon, Aug 21, 2006 at 10:42:06AM +1000, Peter Williams wrote: > Peter Williams wrote: > >Andrew Morton wrote: > ... > >I'm unable to reproduce this problem with 2.6.18-rc4 on my HT system. > >I'm using top with the "last processor" field enabled to observe (rather > >than the methods described) and the two bash shells are both getting > >100% and are each firmly affixed to different CPUs. > > Doing a "cat /proc/stat" also indicates that the problem is not present. > > I wonder if the two xterms and/or their shells are have different nice > values (or scheduling policies)? No.
> Also is the presence of PREEMPT in the uname output for the 2.6.17.8 > kernel (not present in the 2.6.8.1 kernel's output) significant? > Presuming that this signifies the CONFIG_PREEMPT option is selected it > is worth noting that I do not have this selected in the kernel I tested. We have tried witn and without CONFIG_PREEMPT and saw the same problem.
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