My Centos 5,2 is using only 3GB out of 4, please help

[daimne]

Greetings!
Not a linux expert.
Have : Linux localhost.localdomain 2.6.18-238.12.1.el5 #1 SMP Tue May 31 13:23:01 EDT 2011 i686 i686 i386 GNU/Linux

I allocated 4Gb but free -m:
total used free shared buffers cached
Mem: 3034 783 2250 0 226 382

I installed PAE:

yum install kernel-PAE

reboot

but still have the same result of free -m.

Any help will be appreciated!

[HROAdmin26]

Generally a PAE kernel will say PAE - 2.6.18-238.12.1.el5 - does not. If this uname from after rebooting?

The hardware must also support PAE - you may need to look at your motherboard/CPU documentation.

[daimne]

yes uname after PAE. I run this as vm on vmware.
[oracle@localhost ~]$ grep flags /proc/cpuinfo
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss nx rdtscp lm constant_tsc ida nonstop_tsc arat pni ssse3 cx16 sse4_1 sse4_2 popcnt lahf_lm [8]
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss nx rdtscp lm constant_tsc ida nonstop_tsc arat pni ssse3 cx16 sse4_1 sse4_2 popcnt lahf_lm [8]
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss nx rdtscp lm constant_tsc ida nonstop_tsc arat pni ssse3 cx16 sse4_1 sse4_2 popcnt lahf_lm [8]
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss nx rdtscp lm constant_tsc ida nonstop_tsc arat pni ssse3 cx16 sse4_1 sse4_2 popcnt lahf_lm [8]

[HROAdmin26]

I run this as vm on vmware

That didn't seem important to note in your FIRST post? You can Google for YOUR VMware product (there are several and you still didn't say which) and if/how PAE support is available.

[daimne]

Thank you. I could not find anything related to the specific VMplayer problem with PAE on google.
I run it on vmware player 3.1.4. I noticed, that even free shows that only 3GB is being used (4GB was allocated to the VM) - the performance is much better IF 4GB rather than 3GB allocated to the VM.