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SubjectRe: HyperThreading, kernel 2.6.10, 1 logical CPU idle !!
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I disabled SMT in the kernel config and yet it seems to work ...

Boris.

Le samedi 30 avril 2005 à 23:37 +0200, Boris Fersing a écrit :
> Robert Hancock a écrit :
>
> > Boris Fersing wrote:
> >
> >> Hi there,
> >> I've a p4 HT 3,06Ghz, I've HT enabled in the BIOS and in the kernel :
> >>
> >> Linux electron 2.6.10-cj5 #6 SMP Fri Mar 4 02:18:08 CET 2005 i686 Mobile
> >> Intel(R) Pentium(R) 4 CPU 3.06GHz GenuineIntel GNU/Linux .
> >>
> >> But it seems that one of my cpus is idle (gkrellm monitor or top) :
> >>
> >> Cpu0 : 88.0% us, 12.0% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.0% hi,
> >> 0.0% si
> >> Cpu1 : 0.0% us, 0.3% sy, 0.0% ni, 99.7% id, 0.0% wa, 0.0% hi,
> >> 0.0% si
> >>
> >>
> >> I'm actually compiling thunderbird with MAKEOPTS="-j3", so , the second
> >> should be used, shouldn't it ?
> >
> >
> > Are you sure that it is actually compiling multiple files at once?
> >
> Yes I'm sure, Even if I launch more than 1 gcc, or for example, start a
> compilation + video encoding (mencoder) + ... the second CPU won't work
> (idle 100% or sometimes 99,9%).
>
> Regards,
>
> Boris.
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