Three out of Four Isn't Bad
Bill Davidsen
davidsen at tmr.com
Sat Apr 19 18:16:25 UTC 2008
Langdon Stevenson wrote:
> Roger Heflin wrote:
>> Néstor wrote:
>>> I have a situation where I have 36 Gigs of ram on a machine and I
>>> could only
>>> see 4 Gigs
>>> then I installed the PAE kernel and I can only see 24 Gigs. I have a
>>> ticket
>>> opened 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!
>
I didn't get all my RAM even with 64 bit, so don't bet the farm on it
working.
--
Bill Davidsen <davidsen at tmr.com>
"We have more to fear from the bungling of the incompetent than from
the machinations of the wicked." - from Slashdot
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