VMWare Help

Boltersdriveer

Okay, I've got a VMWare VM allocated with 4GB of RAM and running with CentOS 5.8. The problem comes as the VM is only capable of reading 3GB of RAM (meminfo and free -m). Any suggestions?

cat /proc/meminfo
MemTotal:      3107160 kB
MemFree:        168512 kB
Buffers:         15944 kB
Cached:         899056 kB
SwapCached:          0 kB
Active:        2665512 kB
Inactive:       206780 kB
HighTotal:     2228160 kB
HighFree:         4500 kB
LowTotal:       879000 kB
LowFree:        164012 kB
SwapTotal:     4128760 kB
SwapFree:      4128692 kB
Dirty:             108 kB
Writeback:           0 kB
AnonPages:     1957248 kB
Mapped:         109540 kB
Slab:            51804 kB
PageTables:       4468 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
CommitLimit:   5682340 kB
Committed_AS:  2688052 kB
VmallocTotal:   114680 kB
VmallocUsed:      6776 kB
VmallocChunk:   107720 kB
HugePages_Total:     0
HugePages_Free:      0
HugePages_Rsvd:      0
Hugepagesize:     4096 kB

free -m
             total       used       free     shared    buffers     cached
Mem:          3034       2869        164          0         15        877
-/+ buffers/cache:       1976       1058
Swap:         4031          0       4031

Linux tf.pagn.sg 2.6.18-308.11.1.el5 #1 SMP Tue Jul 10 08:49:28 EDT 2012 i686 athlon i386 GNU/Linux

rds100

Try installing 64bit CentOS.

Boltersdriveer

Hmm, nope. 32bit should technically handle this correctly. I'll try checking if it's a PAE issue.

rds100

Yeah, 4GB machines and PAE did not exist when the intel 440BX chipset was created.
For anything over 2GB of RAM it is strongly recommended to use 64bit OS.

earl

yeah you need the PAE kernel then you can see the 4gb

yum install kernel-PAE

then:
/etc/grub.conf - change default=1 to default=0

reboot

Boltersdriveer

Okay, got it figured out. It was PAE all along. Thanks.

earl

I can see 16GB in 32 bit with PAE!

Randy

Have PAE Enabled