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Date:      Mon, 18 Mar 2013 08:29:13 -0700
From:      Mehmet Erol Sanliturk <m.e.sanliturk@gmail.com>
To:        Steven Hartland <killing@multiplay.co.uk>
Cc:        freebsd-current@freebsd.org, Nathan Whitehorn <nwhitehorn@freebsd.org>
Subject:   Re: FreeBSD is very slow when Memory chip sizes are imbalanced in slots
Message-ID:  <CAOgwaMuuOK8qpQFVW-EFZc_kPzQkyrtPCUGuPL_tfgZJUrWK=A@mail.gmail.com>
In-Reply-To: <D956B1EE70984978BCB396A9796EAEDD@multiplay.co.uk>
References:  <CAOgwaMss0cB9bFqCkjzukb-=9FqgLN9vthL5QdQsk-6Lknk5VQ@mail.gmail.com> <CAFHbX1LcCGoWy%2BHzp8T7z4noFZAMK1-sCuWpO_Z_ybhnoMMY5A@mail.gmail.com> <CAOgwaMtTmx4LhEdrg3WNjZA-uyTRSN913RBWrrqMia4GZhP_zA@mail.gmail.com> <CAFHbX1KkD7fWP%2BKZNrSjzCStUM_Smjw7GdKDTo=DjjMoe5ttGA@mail.gmail.com> <35878.1363607691@critter.freebsd.dk> <CAOgwaMthTbj5k%2B03WSNGK7wm0aTufd1czQotM1wF0mAVnU7HLQ@mail.gmail.com> <514715F9.2080506@freebsd.org> <D09D34E518E94C3CAC98DAE7486CE62A@multiplay.co.uk> <CAOgwaMvsoa=TWebXq14VzvNrNQZuLg9Kr63-tmq8ZZ42%2B79mOQ@mail.gmail.com> <F5063459450D4CB4B15B9DC3F0EE27B1@multiplay.co.uk> <CAOgwaMtiPyvZvUj=XDUDVuuAJ%2BVvNtn9TQngQQn7q7grvz8=5Q@mail.gmail.com> <D956B1EE70984978BCB396A9796EAEDD@multiplay.co.uk>

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On Mon, Mar 18, 2013 at 8:21 AM, Steven Hartland <killing@multiplay.co.uk>wrote:

> **
> >> ----- Original Message ----- From: Mehmet Erol Sanliturk
> >>>
> >>> Surely you can eliminate all of those and confirm / deny the original
> >>>> diagnosis by simply installing balanced memory in the machine and
> >>>> checking
> >>>> to see if the problem goes away?
> >>>>
> >>>
> >>> Please see links in my previous mails .
> >>> All of these are worked in detail .
> >>>
> >>> This is Intel DG965WH main board and I do not know much about NUMA ,
> but
> >>> with respect to Wikipedia Non-Uniform_Memory_Access  page , it seems
> that
> >>> there is no NUMA structure in this main board .
> >>>
> >>
> >> But have you installed balanced memory and confirmed the problem goes
> away?
> >
> > Yes .
> >
> >
> >
> http://lists.freebsd.org/pipermail/freebsd-current/2012-February/031836.html
> >
> http://lists.freebsd.org/pipermail/freebsd-current/2012-February/031912.html
> >
> http://lists.freebsd.org/pipermail/freebsd-current/2012-February/031928.html
> >
> http://lists.freebsd.org/pipermail/freebsd-current/2012-February/032012.html
> >
>
> You state there that "The main boards are the same" which indicates to me
> the machines aren't the same machine which could result in some other
> subtle
> difference causing the problem.
>
> To confirm you'll need to use the "exact same machine" for tests with the
> only
> difference being the ram modules installed.
>     Regards
>     Steve
>
>

The main boards are the same model , two of them in two different cases ,
not one main board .

Thank you very much .

Mehmet Erol Sanliturk



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