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Matthias Hopf wrote:
On Jan 25, 07 22:25:39 -0800, Linda Walsh wrote:
Matthias Hopf wrote:
With i386 you will only be able to access 3 or 3.5GB of your memory. At least half a megabyte will be wasted. Background: The PCI cards have to be mapped into the available 32bit address space.
Has anyone actually seen this first hand with any Intel processor with PAE? I've never seen this and it doesn't sound right. I have seen evidence to support the contrary: from /proc/meminfo on my (i386) system:
With PAE, this is a different story. Never had any Intel chip with hardware PAE support (only Xenon processors had that), and the software version of the P4 was too slow for me.
Software version of P4? Haven't heard of that. From the documentation I've found (googling), PAE was/is in any machine with an Intel Pentium Pro or later, though reading about it, it also seemed to involve 2M page sizes. I don't think 2M page sizes are supported or used on ia32 linux. I think the kernel may not be able to see a full 4GB at at the same time, but can use all the memory by mapping memory that would overlap the PCI memory into "high" memory and make use of it that way.
I noticed the 64-bit libraries are under a different path. To switch to x86_64, shouldn't I be able to just install an x86_64 kernel initially then install/switch over apps at leisure?
This should work. But you will need several packages from the very begining (module loading etc.) and the initial ramdisk has to be adapted as well.
Hmm....maybe I should just try making a kernel that doesn't need a ramdisk and has all needed modules compiled in. Will keep that in mind though...thanks for the heads up! Right now, I have so many modules (lsmod) that are loaded but I don't have hardware for -- why does it do that?! It may be they load during some hardware probing, but I wish they'd unload the unneeded part when they were done. Seems like that's another area for saving memory. Guess I need to go experiment^Wplay^Wresearch some more ... :-)... Thanks! Linda -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org