> I can't say I'm a fan of adding another flavour. How many people are > actually using >4GB of memory on x86? I suspect (or hope) that people > who are going to be doing those sorts of things will be using x86_64 > and ia64 hardware. Christian's problem, aiui, is simply that the kernel > sees 3.5GB instead of 4GB. I'm not sure whether this is by design, or is > a bug, but I'd much rather see that fixed instead.
This is not really a bug, see: http://lists.us.dell.com/fom-serve/cache/68.html http://lists.us.dell.com/pipermail/linux-poweredge/2004-November/017335.html http://lists.us.dell.com/pipermail/linux-poweredge/2004-November/017342.html The 3.5GB-4GB address space is reserved for PCI devices, so, as only 4GB can be adressed on 32bits proc, there is an address space shortage which prevents using the 3.5GB-4GB RAM. So the only solution is to enable CONFIG_HIGHMEM64G to increase the address space so that the 3.5GB-4GB RAM become addresseable. However I would be interested in some numbers/benchmarks on the performance penalty of the PAE mode. Is this worth 512MB of additionnal RAM ? Yann -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
