Re: HyperThreading, kernel 2.6.10, 1 logical CPU idle !!

[Coywolf Qi Hunt]

It seems the problem was already solved.Try the latest mm tree: 2.6.12-rc3-mm2.

FYI:
sched2-fix-smt-scheduling-problems-fix.patch
sched2-fix-smt-scheduling-problems.patch


On 5/1/05, Boris Fersing <mastermac@xxxxxxx> wrote:
> 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.



-- 
Coywolf Qi Hunt
http://sosdg.org/~coywolf/
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