Roger Heflin wrote:
Néstor wrote:I have a situation where I have 36 Gigs of ram on a machine and I could onlysee 4 Gigsthen I installed the PAE kernel and I can only see 24 Gigs. I have a ticketopened with Red Hat to see what they recommend. :-)If that is a 64-bit capable machine, you should run 64-bit on it, you can run 32-bit userspace stuff, but if you run a 32-bit os with that kind of ram you run into all sorts of issues with the machine running out of the 800-900MB of lowmem and this causes fatal issues even those massive amounts of highmem are available. You will have enough issues with 32-bit and lots of ram to make it worth considering the 64-bit stuff.Roger
I recently upgraded from F7 to F8 and went with the 32 bit F8 version rather than the 64 F7 due to the significant difficulties I had with FireFox/Flash/Java.
I had installed another 2 Gig of RAM just prior to the upgrade and it showed up fine under F7 64bit.
However on F8 32bit I can only see 3.2 gig of my RAM. It is not a huge problem as I don't use it all. The 64 version of F7 used to gobble up all of my RAM occasionally (I could never figure out why, or what application was responsible). That problem vanished with the 32 bit F8 and 32 bit apps.
It is interesting though that when the 64 v's 32 bit question has been asked on this list that I have never heard this memory limit mentioned (I may have missed it though). Perhaps it is just that RAM is now soooooo cheap that it is only just becoming an issue.
Still. Looks like a really good reason to go with 64 bit next time I do an upgrade!
Langdon
