[Leaplist] LINUX memory shortfall

[Mr. Brunkow]

Kyle Gonzales wrote:
> A couple of things:
>
> 1) On FC6 the standard kernel will let you get access to over 4 Gb.
> SMP kernel will get you to 16 Gb.  It is better to use these than to
> try the hugemem kernel under 16 Gb.  If you have less than 16 Gb of
> memory and you use the hugemem kernel, you will take a performance hit
> due to the 4Gb/4Gb split and the overhead dealing with an additional
> level of memory page tables.
>
> 2) Tho RHEL5 and its derivative CentOS5 are very good if you want
> longer term OS versions (which you seem to if you are still using
> FC6), you can also use a 64-bit version of FC6 to get the memory
> benefits.
>
> On Jan 2, 2008 11:48 AM, ssma at sunstatemartialarts.com
> <ssma at sunstatemartialarts.com> wrote:
>   
>> you will need the hugemem kernel to run more then 2.5G worth of ram on
>> FC6.  it might be a good idea to upgrade to CentOS 5 and run the 64bit
>> vs just to bypass the headache of memory access.
>>     
>
>
>
>
>   
Only reason I posted to use the hugemem was after a fast google search i 
came across several threads indicating that FC6 32bit does NOT access 
more then 3.5G and some indicated 2.5G as the limit.  If the default 
kernel can use 4G of ram, then there is an other issue at hand that 
needs attending too.

-- 
Raymond L. Brunkow
5th Degree Black Belt
Chief Instructor and Owner
Sun State Martial Arts
(407) 786-2525

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