Allocated versus Installed Memory Size


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Just recently installed 64GB of RAM to this new system. Dashboard states that allocated is 32GB whereas installed is 64GB. See below:

 

bbGAsxH.png

 

Clicking "Info" on the top right hand corner results in the below:

 

VXu77E9.png

 

Running dmidecode -t 17 result in the below:

 

HY20g1q.png

 

Any thoughts? Thanks!

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Well,

free

shows a total of 32GiB and that agrees with what the system recognises at boot time:

 

May  1 02:20:34 unRAID kernel: Memory: 32864256K/33518356K available (6120K kernel code, 627K rwdata, 2004K rodata, 916K init, 592K bss, 654100K reserved, 0K cma-reserved)

 

(from your syslog). So I don't understand why the Info window shows 64 GiB, even though that's what you actually have fitted!

 

I take it that there are eight sockets on the motherboard and each has an 8 GiB DIMM fitted. Is the make and part number of the RAM on the qualified list for that board?

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Well,

free

shows a total of 32GiB and that agrees with what the system recognises at boot time:

 

May  1 02:20:34 unRAID kernel: Memory: 32864256K/33518356K available (6120K kernel code, 627K rwdata, 2004K rodata, 916K init, 592K bss, 654100K reserved, 0K cma-reserved)

 

(from your syslog). So I don't understand why the Info window shows 64 GiB, even though that's what you actually have fitted!

 

I take it that there are eight sockets on the motherboard and each has an 8 GiB DIMM fitted. Is the make and part number of the RAM on the qualified list for that board?

 

That's correct, 8x8GB. The ram was not on the qualified list. I didn't think it would be such a big issue. All sticks are the same model number so if the first four work, why wouldn't the next four. After further invsetigation, in BIOs, it's being recognized as 32GB as well. So perhaps the issue isn't so much the software as it is the recognition of it at a hardware level. Thanks for your efforts though! I'll have to look into it some more.

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One thing that might be worth testing. Take the four DIMMs out of the blue sockets. Does the BIOS correctly detect 32 GiB? Now fill up the blue sockets and empty the black ones. Does it detect the other 32 GiB? I've known four-socket motherboards to be happy with two DIMMs but not four. Timings might be off or loadings too high.

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Check the bios and see if it lists all 8 sticks of ram

 

Could half your ram be dedicated to something else like shared memory for graphics? Because unraid seems to recognize the installed ram correctly, it's just that half of it is not available

 

I have the same board with 8x8GB ram. Unraid dashboard shows 65 thousand something as installed and 64 thousand something allocated

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One thing that might be worth testing. Take the four DIMMs out of the blue sockets. Does the BIOS correctly detect 32 GiB? Now fill up the blue sockets and empty the black ones. Does it detect the other 32 GiB? I've known four-socket motherboards to be happy with two DIMMs but not four. Timings might be off or loadings too high.

 

I will look into this.

 

 

Check the bios and see if it lists all 8 sticks of ram

 

Could half your ram be dedicated to something else like shared memory for graphics? Because unraid seems to recognize the installed ram correctly, it's just that half of it is not available

 

I have the same board with 8x8GB ram. Unraid dashboard shows 65 thousand something as installed and 64 thousand something allocated

 

I was tinkering around with the RAM settings in the bios. If you ever power down your server, could you tell me your settings?

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  • 1 year later...

hi guys, i have the same issue, not sure if the above solved the problem, but here are my specs

 

unraid 6.3.2

 

 

 free
              total        used        free      shared  buff/cache   available
Mem:        8071464     5950368     1177376      504988      943720     1111740
Swap:             0           0           0
 

 dmidecode -t 17
# dmidecode 3.0
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.

Handle 0x0012, DMI type 17, 34 bytes
Memory Device
        Array Handle: 0x0010
        Error Information Handle: Not Provided
        Total Width: 64 bits
        Data Width: 64 bits
        Size: 8192 MB
        Form Factor: DIMM
        Set: None
        Locator: A1_DIMM0
        Bank Locator: A1_BANK0
        Type: DDR3
        Type Detail: Synchronous Unbuffered (Unregistered)
        Speed: 1333 MHz
        Manufacturer: Undefined
        Serial Number: 00000000
        Asset Tag: A1_AssetTagNum0
        Part Number: F3-1866C10-8GSR
        Rank: 2
        Configured Clock Speed: 667 MHz

Handle 0x0014, DMI type 17, 34 bytes
Memory Device
        Array Handle: 0x0010
        Error Information Handle: Not Provided
        Total Width: Unknown
        Data Width: 64 bits
        Size: No Module Installed
        Form Factor: DIMM
        Set: None
        Locator: A1_DIMM1
        Bank Locator: A1_BANK1
        Type: Unknown
        Type Detail: Synchronous
        Speed: Unknown
        Manufacturer: A1_Manufacturer1
        Serial Number: A1_SerNum1
        Asset Tag: A1_AssetTagNum1
        Part Number: Array1_PartNumber1
        Rank: Unknown
        Configured Clock Speed: Unknown

Handle 0x0016, DMI type 17, 34 bytes
Memory Device
        Array Handle: 0x0010
        Error Information Handle: Not Provided
        Total Width: 64 bits
        Data Width: 64 bits
        Size: 8192 MB
        Form Factor: DIMM
        Set: None
        Locator: A1_DIMM2
        Bank Locator: A1_BANK2
        Type: DDR3
        Type Detail: Synchronous Unbuffered (Unregistered)
        Speed: 1333 MHz
        Manufacturer: Undefined
        Serial Number: 00000000
        Asset Tag: A1_AssetTagNum2
        Part Number: F3-1866C10-8GSR
        Rank: 2
        Configured Clock Speed: 667 MHz

Handle 0x0018, DMI type 17, 34 bytes
Memory Device
        Array Handle: 0x0010
        Error Information Handle: Not Provided
        Total Width: 64 bits
        Data Width: 64 bits
        Size: 4096 MB
        Form Factor: DIMM
        Set: None
        Locator: A1_DIMM3
        Bank Locator: A1_BANK3
        Type: DDR3
        Type Detail: Synchronous Unbuffered (Unregistered)
        Speed: 1333 MHz
        Manufacturer: Undefined
        Serial Number: 00000000
        Asset Tag: A1_AssetTagNum3
        Part Number: F3-14900CL9-4GBXL
        Rank: 2
        Configured Clock Speed: 667 MHz
 

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