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

From: Boris Fersing (mastermac_at_free.fr)
Date: 04/30/05

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    Date:	Sat, 30 Apr 2005 23:37:12 +0200
To: Robert Hancock <hancockr@shaw.ca>

    Robert Han*** 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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