[LUAU] goofy RAM question

[Charles Lockhart]

The question is probably goofy, not the ram.

I just installed 4GB of RAM on a Dell Precision 450 running CentOS4  
(dual Xeon P4 workstation).  The BIOS reports seeing all of it, but when 
I run "cat /proc/meminfo"  I see number that don't see quite right for 
the MemTotal.  Is the OS really not seeing the RAM, or is is it just 
listed differently?  I remember something about a kernel limitation at 
around 4GB, and there was a special kernel for running with gt 4GB, but 
now the threshold seems to be 16GB, it seems like 4GB wouldn't cause a 
problem.

I got the memory from Kingston, via their RAM selector web interface 
guide, so it's the right memory for the machine.  I just don't see why 
it's not all showing up (my other Dell with FC2 on it and having 512MB 
of RAM shows memtotal as 515372 kB, which while not exactly 512MB, seems 
pretty close).

[sw at nsf2pc ~]$ cat /proc/meminfo
MemTotal:      3504968 kB
MemFree:       3287304 kB
Buffers:         13948 kB
Cached:         122292 kB
SwapCached:          0 kB
Active:          84376 kB
Inactive:        98208 kB
HighTotal:     2620884 kB
HighFree:      2444352 kB
LowTotal:       884084 kB
LowFree:        842952 kB
SwapTotal:     6144852 kB
SwapFree:      6144852 kB
Dirty:             136 kB
Writeback:           0 kB
Mapped:          59532 kB
Slab:            20292 kB
Committed_AS:    94336 kB
PageTables:       1672 kB
VmallocTotal:   106488 kB
VmallocUsed:      5368 kB
VmallocChunk:   100996 kB
HugePages_Total:     0
HugePages_Free:      0
Hugepagesize:     2048 kB
[sw at nsf2pc ~]$