FreeBSD 5.3 problem on Dual AMD64 2.2GHz with 8GB RAM

David O'Brien obrien at
Thu Oct 28 20:19:55 PDT 2004

On Thu, Oct 28, 2004 at 10:18:11AM +0900, Ganbold wrote:
> >> >An IBM e325 has only 6 DIMM slots, specifically what RAM configuration
> >> >are you using?  Do you have ECC turned on?  Are using DRAM scrubbing?
> >> >What is your BIOS memory interleaving settings?
> >>
> >> I have 2GB x 4 = 8GB RAM and ECC is turned on and I have following
> >> settings in BIOS:
> >
> >By chance, have you tried both with 4GB per CPU and with all 8GB on one
> >CPU?  Did it make a difference?
> You mean kernel compiled without SMP options?

No.  You have 6 DIMM slots and 4 DIMM's.  So there are two ways to
install the memory -- CPU0 gets all 4 DIMM's; or CPU0 gets 2 DIMM's and
CPU1 gets 2 DIMM's.

> >> 4GB Memory Hole adjust  -> AUTO
> >
> >I would turn this off (disable).
> This has only 2 options, AUTO and Manual. If I select Manual, I have to 
> adjust 4GB memory hole size, which
> has 64mb, 128mb, 256mb, 512mb, 1gb options. What should I choose?

Go with AUTO then.  You don't want anything special happening.

-- David  (obrien at

More information about the freebsd-amd64 mailing list