PAE, mem available to user?

[Kris Kennaway]

On Sat, Mar 27, 2004 at 04:06:17PM -0800, Peter G wrote:
> hi all, read thru the archives, esp thru thread: "PAE
> testing results ..."  from circa May 03.
> 
> I am getting a diffrent problem on a uniProc machine.
> with 5.2.1 and a stock PAE build.
> 
> machine is stable and does not crash, but the big mem
> user job we want to submit to it, all these jobs die
> when they start using about 400MB of mem, swap doesn't
> activate. the user submitted job just core dumps.
> With previous 4.5 FBSD machines with the following
> kernel options compiled in (before PAE days) on same
> machine w/same 1.5GB of physical mem and plenty of
> swap, we'd get 1.2GB of usable mem for user job and
> rest would be kernel space. Job would run but not
> satisfactory, thought modern PAE would be a better
> bet.
> 
> The kernel options we had used w/ 4.5 back then were:
> options MAXDSIZ="(1664*1024*1024)"
> options DFLDSIZ="(1664*1024*1024)"

PAE is for addressing >4GB of memory; since you only have about 1.5GB,
that's not applicable.

You'll need to include more details about your system and kernel
configuration, including error messages showing what is going wrong.

Kris
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