Re: Performance issue with 5.4-RELEASE-p8 but not with 5.4-RELEASE

From: Lukas Razik (lukas_at_razik.de)
Date: 10/25/05

  • Next message: Robert Watson: "Re: Performance issue with 5.4-RELEASE-p8 but not with 5.4-RELEASE" 
    Date: Tue, 25 Oct 2005 11:42:46 +0200
To: JosephKoshy <joseph.koshy@gmail.com>

    Joseph Koshy <joseph.koshy@gmail.com> schrieb am 24.10.05 07:57:32:
    >
    > On 10/24/05, Lukas Razik <lukas@razik.de> wrote:
    > >
    > > O.K.
    > >
    > > I've found the reason for the issue.
    > > After exchanging the newer
    > > src/sys/i386/include/cpufunc.h,v 1.142.6.1 2005/05/13 00:12:57
    > > src/sys/i386/i386/mp_machdep.c,v 1.235.2.6.2.3 2005/05/13 00:12:56
    > > from 5.4-RELEASE-p1 by the old
    > >
    > > src/sys/i386/include/cpufunc.h,v 1.142 2004/04/07 20:46:05
    > > src/sys/i386/i386/mp_machdep.c,v 1.235.2.6.2.2 2005/05/01 05:38:13
    > > from 5.4-RELEASE the issue disappeared.
    >
    > >From the CVS commit log for this change at:
    >
    > http://www.freebsd.org/cgi/cvsweb.cgi/src/sys/i386/i386/mp_machdep.c?only_with_tag=RELENG_5_4
    >
    > "Add a knob for disabling/enabling HTT, "machdep.hyperthreading_allowed".
    > Default off due to information disclosure on multi-user systems."
    >
    > Does turning HTT back on fix the regression?
    >

    Yes, it does! :-) Many thanks!!!
    Nice to know this important detail...

    Regards,
    Lukas

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  • Next message: Robert Watson: "Re: Performance issue with 5.4-RELEASE-p8 but not with 5.4-RELEASE"

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