but why does 1 system show 3.2GB and the other 3.9? they both had 4GB installed
On Wed, Sep 24, 2008 at 2:59 PM, Janne Blomqvist <[EMAIL PROTECTED]>wrote: > solarflow99 wrote: > >> that makes me wonder about something I have several computers with 4GB of >> ram using the regular 32 bit kernel (non-PAE) and I see different amounts of >> ram, for instance: >> ]# free -m >> total Mem: 3286 ]# free -m >> total Mem: 3986 >> > > Probably PCI device memory. They start at 4 GB and go downwards (AFAIK most > are not capable of 64-bit addressing so they have to be below 4 GB). > > Now, many BIOS:es support "PCI hole remapping" (or whatever it's called), > meaning that the memory that gets clobbered by the PCI devices can be > remapped to somewhere beyond the 4 GB limit. However, obviously you'll need > PAE or x86-64 in order to access this remapped memory. > > -- > Janne Blomqvist > > _______________________________________________ > rhelv5-list mailing list > [email protected] > https://www.redhat.com/mailman/listinfo/rhelv5-list >
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