Hello, I have total of 32GB ram installed.
During the installation of the system, I had 16GB installed. Much later, I decided to add an additional 16 GB. The problem is that Xen only shows16 of 32 GB. In spite of the new ones works correctly (BIOS displays total 32 and dmidecode shows 4 banks for 8 GB), they weren't correctly recongnised and added by OS
xsconsole displays 16GB
xl info
total_memory : 16315
free_memory : 2634
sharing_freed_memory : 0
sharing_used_memory : 0
outstanding_claims : 0
free_cpus : 0
xen_major : 4
xen_minor : 13
xen_extra : .4-9.18.1
xen_version : 4.13.4-9.18.1
xen_caps : xen-3.0-x86_64 hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-
xen_commandline : dom0_mem=1840M,max:1840M watchdog ucode=scan
cc_compiler : gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28)
cat /proc/meminfo
MemTotal: 1677080 kB
MemFree: 94872 kB
MemAvailable: 1135596 kB
Buffers: 539492 kB
Cached: 486508 kB
SwapCached: 8 kB
dmidecode
BIOS Information
Vendor: American Megatrends Inc.
Version: P4.20
Release Date: 06/18/2020
BIOS Revision: 5.14
Handle 0x0001, DMI type 1, 27 bytes
Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
Manufacturer: ASRock
Product Name: B450 Pro4
Handle 0x000E, DMI type 16, 23 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 128 GB
Error Information Handle: 0x000D
Number Of Devices: 4
Handle 0x000F, DMI type 19, 31 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x007FFFFFFFF
Range Size: 32 GB
Physical Array Handle: 0x000E
Partition Width: 4
Handle 0x0013, DMI type 4, 48 bytes
Processor Information
Socket Designation: AM4
Type: Central Processor
Family: <OUT OF SPEC>
Manufacturer: Advanced Micro Devices, Inc.
ID: 82 0F 80 00 FF FB 8B 17
Version: AMD Ryzen 5 1600 Six-Core Processor
Voltage: 1.1 V
External Clock: 100 MHz
Max Speed: 3700 MHz
Current Speed: 3200 MHz
Status: Populated, Enabled
Upgrade: <OUT OF SPEC>
L1 Cache Handle: 0x0010
L2 Cache Handle: 0x0011
L3 Cache Handle: 0x0012
Serial Number: Unknown
Asset Tag: Unknown
Part Number: Unknown
Core Count: 6
Core Enabled: 6
Thread Count: 12
Characteristics:
64-bit capable
Multi-Core
Hardware Thread
Execute Protection
Enhanced Virtualization
Power/Performance Control
Handle 0x0014, DMI type 18, 23 bytes
32-bit Memory Error Information
Type: OK
Granularity: Unknown
Operation: Unknown
Vendor Syndrome: Unknown
Memory Array Address: Unknown
Device Address: Unknown
Resolution: Unknown
Handle 0x0015, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x000E
Error Information Handle: 0x0014
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: None
Locator: DIMM 0
Bank Locator: P0 CHANNEL A
Type: DDR4
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 2667 MHz
Manufacturer: Unknown
Serial Number: 02080314
Asset Tag: Not Specified
Part Number: 3200 C16 Series
Rank: 1
Configured Clock Speed: 2667 MHz
Minimum Voltage: 1.2 V
Maximum Voltage: 1.2 V
Configured Voltage: 1.2 V
Handle 0x0016, DMI type 20, 35 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x003FFFFFFFF
Range Size: 16 GB
Physical Device Handle: 0x0015
Memory Array Mapped Address Handle: 0x000F
Partition Row Position: Unknown
Interleave Position: Unknown
Interleaved Data Depth: Unknown
Handle 0x0017, DMI type 18, 23 bytes
32-bit Memory Error Information
Type: OK
Granularity: Unknown
Operation: Unknown
Vendor Syndrome: Unknown
Memory Array Address: Unknown
Device Address: Unknown
Resolution: Unknown
Handle 0x0018, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x000E
Error Information Handle: 0x0017
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: None
Locator: DIMM 1
Bank Locator: P0 CHANNEL A
Type: DDR4
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 2667 MHz
Manufacturer: Unknown
Serial Number: 11040A1F
Asset Tag: Not Specified
Part Number: 3200 C16 Series
Rank: 1
Configured Clock Speed: 2667 MHz
Minimum Voltage: 1.2 V
Maximum Voltage: 1.2 V
Configured Voltage: 1.2 V
Handle 0x0019, DMI type 20, 35 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x003FFFFFFFF
Range Size: 16 GB
Physical Device Handle: 0x0018
Memory Array Mapped Address Handle: 0x000F
Partition Row Position: Unknown
Interleave Position: Unknown
Interleaved Data Depth: Unknown
Handle 0x001A, DMI type 18, 23 bytes
32-bit Memory Error Information
Type: OK
Granularity: Unknown
Operation: Unknown
Vendor Syndrome: Unknown
Memory Array Address: Unknown
Device Address: Unknown
Resolution: Unknown
Handle 0x001B, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x000E
Error Information Handle: 0x001A
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: None
Locator: DIMM 0
Bank Locator: P0 CHANNEL B
Type: DDR4
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 2667 MHz
Manufacturer: Unknown
Serial Number: 020409D2
Asset Tag: Not Specified
Part Number: 3200 C16 Series
Rank: 1
Configured Clock Speed: 2667 MHz
Minimum Voltage: 1.2 V
Maximum Voltage: 1.2 V
Configured Voltage: 1.2 V
Handle 0x001C, DMI type 20, 35 bytes
Memory Device Mapped Address
Starting Address: 0x0000000000000000k
Ending Address: 0xFFFFFFFFFFFFFFFFk
Range Size: 0 bytes
Physical Device Handle: 0x001B
Memory Array Mapped Address Handle: 0x000F
Partition Row Position: Unknown
Interleave Position: Unknown
Interleaved Data Depth: Unknown
Handle 0x001D, DMI type 18, 23 bytes
32-bit Memory Error Information
Type: OK
Granularity: Unknown
Operation: Unknown
Vendor Syndrome: Unknown
Memory Array Address: Unknown
Device Address: Unknown
Resolution: Unknown
Handle 0x001E, DMI type 17, 40 bytes
Memory Device
Array Handle: 0x000E
Error Information Handle: 0x001D
Total Width: 64 bits
Data Width: 64 bits
Size: 8192 MB
Form Factor: DIMM
Set: None
Locator: DIMM 1
Bank Locator: P0 CHANNEL B
Type: DDR4
Type Detail: Synchronous Unbuffered (Unregistered)
Speed: 2667 MHz
Manufacturer: Unknown
Serial Number: 11040A26
Asset Tag: Not Specified
Part Number: 3200 C16 Series
Rank: 1
Configured Clock Speed: 2667 MHz
Minimum Voltage: 1.2 V
Maximum Voltage: 1.2 V
Configured Voltage: 1.2 V
Handle 0x001F, DMI type 20, 35 bytes
Memory Device Mapped Address
Starting Address: 0x0000000000000000k
Ending Address: 0xFFFFFFFFFFFFFFFFk
Range Size: 0 bytes
Physical Device Handle: 0x001E
Memory Array Mapped Address Handle: 0x000F
Partition Row Position: Unknown
Interleave Position: Unknown
Interleaved Data Depth: Unknown
Handle 0x0020, DMI type 127, 4 bytes