Hi all,
we are facing problem after upgrading RAM to 64GB, previously our system was running with 32GB, with oracle enterprise linux 5.9.
recently we upgraded it to 64GB in the system hardware its showing all 64GB but from OS side its showing only 32GB.
How can i get all 64GB usable.
# uname -a
Linux XXXXXXXXXXXXX 2.6.18-348.el5xen #1 SMP Wed Jan 9 08:32:18 PST 2013 x86_64 x86_64 x86_64 GNU/Linux
]# cat /proc/meminfo
MemTotal: 33554432 kB
MemFree: 26679220 kB
Buffers: 203628 kB
Cached: 744152 kB
SwapCached: 0 kB
Active: 5372380 kB
Inactive: 535884 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 33554432 kB
LowFree: 26679220 kB
SwapTotal: 33554424 kB
SwapFree: 33554424 kB
Dirty: 140 kB
Writeback: 0 kB
AnonPages: 4960656 kB
Mapped: 52028 kB
Slab: 150560 kB
PageTables: 31776 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 50331640 kB
Committed_AS: 10139772 kB
VmallocTotal: 34359738367 kB
VmallocUsed: 18092 kB
VmallocChunk: 34359719735 kB
# dmidecode -t 16
# dmidecode 2.11
SMBIOS 2.7 present.
Handle 0x1000, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: Single-bit ECC
Maximum Capacity: 384 GB
Error Information Handle: Not Provided
Number Of Devices: 12
Handle 0x1001, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: Single-bit ECC
Maximum Capacity: 384 GB
Error Information Handle: Not Provided
Number Of Devices: 12
dmidecode -t 17 |grep Size
Size: 8192 MB
Size: No Module Installed
Size: No Module Installed
Size: 8192 MB
Size: No Module Installed
Size: No Module Installed
Size: No Module Installed
Size: No Module Installed
Size: 8192 MB
Size: No Module Installed
Size: No Module Installed
Size: 8192 MB
Size: 8192 MB
Size: No Module Installed
Size: No Module Installed
Size: 8192 MB
Size: No Module Installed
Size: No Module Installed
Size: No Module Installed
Size: No Module Installed
Size: 8192 MB
Size: No Module Installed
Size: No Module Installed
Size: 8192 MB
Thanks !