On Thu, 2004-01-08 at 22:05, Bevan C. Bennett wrote: > > Are you using a significant fraction of RAM? > Very much so. We're pushing our RAM very hard, and considering > installing even more. How much RAM exactly ? It's possible the VM changes that went into 2.4.23 may help on big boxes. It is quite a radical amount of change however (which is why it never made it into FC1 at all) > > RHEL and Fedora have a completely different VM. > Ah, then the kernel differences are significant enough not to be easily > enumerated or replaced. How do their VMs compare to 2.6? FC1 - Stock 2.4 VM from 2.4.22 (Before the recent large -aa merge) Taroon - Rik van Riel's rmap vm. 2.6 - Completely different again, but with some elements of rmap vm (Ie the actual reverse mappings part). > > Also, highmem support in FC1 may be broken. > That's not good, if it's true. I would use 'suboptimal' rather than broken if its the issues I'm thinking of. Dave
