fedora newbie

[Joey Kelley]

James and all,
          Oh.
          I have to admit - you lost me after:
> Um. It sounds like you've misunderstood the 4G/4G split.
          Terribly afraid I'm a 'end user' of this OS, not a person equipped
with the skills necessary to understand all of the ins and outs.
          But thanks for the correction!
          cya, Joey

--Joey Kelley, Fedora Newbie--
"If David beat Goliath, Linux
should kick Microsofts butt!"


Quoting James Wilkinson <james at westexe.demon.co.uk>:

> Joey Kelley wrote:
> >          I was going over the specs of FC2 a while ago, and in FC2 the
> maximum
> > size of the RAM that can be accessed is 4 GB, with an additional 4 GB of
> swap
> > partition (to quote a mac term, Virtual Ram or the linux version of the
> Windows
> > temporary files)
>
> Um. It sounds like you've misunderstood the 4G/4G split.
>
> The maximum memory Fedora can use is the maximum that the underlying
> kernel can use. On x64-64, that should be 1 TB = 1024 GB IF you can find
> the hardware to support it! On x86, that is 64 GB with Intel's PAE mode.
>
> It also supports up to 32 swap files or partitions, each of up to 2 GB
> on x86 (according to man mkswap). (No idea what the x86-64 limit is: the
> underlying hardware can't use more than 1024 TB of virtual memory...)
>
> The 4G/4G split is to do with how an individual process views memory.
> There's a part of the chip called the Memory Management Unit which,
> together with the kernel's virtual memory subsystem, selects 4K pages
> from real memory, swap, and other places to make up 4 GB for the process
> and 4 GB of easily-accessible RAM for kernel mode.
>
> Hope this helps,
>
> James.
> --
> E-mail address: james | actor: (n) a piece of scenery that has the audacity
> @westexe.demon.co.uk  | to move once lit.