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VMWare Help
Boltersdriveer
Member, LIR
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
Comments
Try installing 64bit CentOS.
Hmm, nope. 32bit should technically handle this correctly. I'll try checking if it's a PAE issue.
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.
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
Okay, got it figured out. It was PAE all along. Thanks.
I can see 16GB in 32 bit with PAE!
Have PAE Enabled