FreeBSD is very slow when Memory chip sizes are imbalanced in slots

[Mehmet Erol Sanliturk]

On Mon, Mar 18, 2013 at 8:41 AM, Steven Hartland <killing at multiplay.co.uk>wrote:

>
> ----- Original Message ----- From: "Mehmet Erol Sanliturk" <
> m.e.sanliturk at gmail.com>
>
>  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.
>>>
>>
>> The main boards are the same model , two of them in two different cases ,
>> not one main board .
>>
>
> That doesn't mean that both machines are configured / installed identically
> you need to rule out other differences before continuing.
>
>    Regards
>    Steve
>
>

Important ( determiner ) parameters are ( FreeBSD ( 9.0 , 9.1 , 10.0 : any
of them with X + Desktop ( FluxBox , KDE , Gnome , I never used any other
one , except one time I have tried Enlightenment , but not for this case  )
, Memory Chip Sizes ) .

Assume :

Computer A : Memory Chip Sizes : ( 2 GB , 1 GB , 2 GB , 1 GB ) : Working
SLOW . FreeBSD A
Computer B  : Memory Chip Sizes : ( 2 GB , 2 GB , 2 GB , 2 GB ) : Working
FAST . FreeBSD B

Interchange memory chips :

Computer A : Memory Chip Sizes : ( 2 GB , 2 GB , 2 GB , 2 GB ) : Working
FAST . FreeBSD A
Computer B  : Memory Chip Sizes : ( 2 GB , 1 GB , 2 GB , 1 GB ) : Working
SLOW . FreeBSD B


Then : Interchanging only memory chips is interchanging also the SPEED .
Means : FreeBSD installation is NOT important ( or effective ) .

Thank you very much .

Mehmet Erol Sanliturk