Linux Memory Slots Info

Got a Nice post by Mr. Rvkumar on his blog, posting it here. So the Admins can read and take benefit of it.
  • First check the actual memory Info from the either “top” or “free -m” command.
  • Check the “dmidecode” output for the DIMM slot and each RAM size
FREE COMMAND OUTPUT
So the below command shows that we have around 2GB of memory installed in the system.

Run the DMIDECODE command and look for the data where the word “Physical Memory Array” starts and go through each line to get detailed information. In some new systems you can also use the command dmidecode –s memory and dmidecode –t 17, where “s” means string and “t” means type. You can sift through the details to find all the information that you need. The size of each of the memory slot can printed out by filtering the output using the grep command. The following command will print out size of the memory in each slot along with the slot handle address. Bash$ dmidecode -type memory grep -i -e DMI -e size.

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[[email protected]]# free -m
total used free shared buffers cached

This is our sixth post on getting hardware information. In this post we will see how to get RAM details such as size, speed, make, maximum capacity allowed RAM etc. We already covered some hardware related stuff in this series so far as given below. Get BIOS, Firmware, Hardware And Drivers Details in Linux/Unix What. The RAM, for Random Access Memory, is a critical component of a Linux system that needs to be monitored closely. In some cases, you might run out of memory, leaving your server with very slow response times or being completely unresponsive. As a consequence, knowing how to check your RAM on Linux is crucial because you might be able to take preventive actions instead of corrective ones. The Roulette Double Up. So this strategy can be quite rewarding, but at Linux Memory Slots Info the Linux Memory Slots Info same time risky. Whenever you claim a casino bonus, the first thing you should do is to take the whole amount and bet on either RED or BLACK on Roulette.

Mem: 2026 1585 440 0 222 551
-/+ buffers/cache: 811 1215
Swap: 4094 0 4094
TOP COMMAND OUTPUT
Let’s verify our understanding of memory available using the TOP command which also shows that we have approx 2GB memory approx.
[[email protected]]# top
top – 13:18:56 up 216 days, 4:12, 3 users, load average: 0.14, 0.11, 0.09
Tasks: 199 total, 1 running, 198 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.8% us, 1.4% sy, 0.0% ni, 97.4% id, 0.3% wa, 0.0% hi, 0.0% si
Mem: 2074900k total, 1623648k used, 451252k free, 227816k buffers
Swap: 4192924k total, 296k used, 4192628k free, 565160k cached
DMIDECODE COMMAND
Run the DMIDECODE command and look for the data where the word “Physical Memory Array” starts and go through each line to get detailed information. In some new systems you can also use the command dmidecode –s memory and dmidecode –t 17 , where “s” means string and “t” means type. Let’s just use dmidecode here for now.
Summary of the memory data
——————————————————————————————-
Maximum memory that the ON BOARD memoryslots can accept is= 8GB
Type of memory = DDR
Error Correction Type: Single-bit ECC
Size of each DIMM = 1024 MB (1GB)
DIMM Speed = 333 MHz (3.0 ns)
Number of DIMM slots = Total4 DIMM slots and only 2 DIMM slots are filled with 1GB memory each
Note: where ever the Memory module is not installed the “Size” would show as “Size: No Module Installed”
——————————————————————————————-
[[email protected]]# dmidecode more
So here is the summary of the Info that we are looking from the Important Information we have from the dmidecode data
Handle 0×1000
DMI type 16, 15 bytes.
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: Single-bit ECC
Maximum Capacity: 8 GB
Error Information Handle: Not Provided
Number Of Devices: 4
Handle 0×1100
DMI type 17, 23 bytes.
Memory Device
Array Handle: 0×1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM

Linux print memory infoSet: 1
Locator: DIMM 01
Bank Locator: Not Specified
MemoryType: DDR
Type Detail: Synchronous
Speed: 333 MHz (3.0 ns)
Handle 0×1101
DMI type 17, 23 bytes.
Memory Device
Array Handle: 0×1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: 1024 MB
Form Factor: DIMM
Set: 1
Locator: DIMM 02
Bank Locator: Not Specified
Type: DDR
Type Detail: Synchronous

Linux Get Free Memory

Speed: 333 MHz (3.0 ns)
Handle 0×1102
DMI type 17, 23 bytes.
Memory Device
Array Handle: 0×1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 2
Locator: DIMM 03
Bank Locator: Not Specified
Type: DDR
Type Detail: Synchronous
Speed: 333 MHz (3.0 ns)
Handle 0×1103
DMI type 17, 23 bytes.
Memory Device
Array Handle: 0×1000
Error Information Handle: Not Provided
Total Width: 72 bits
Data Width: 64 bits
Size: No Module Installed
Form Factor: DIMM
Set: 2
Locator: DIMM 04
Bank Locator: Not Specified
Type: DDR
Type Detail: Synchronous

Linux Get Memory Slot Info

Speed: 333 MHz (3.0 ns)

Linux Memory Slots Info Download

So here is my learning for the day. So I am signing of for the day looking forward to learn something new tomorrow. Infact there are couple of things that I have learnt today and I would try to either share it today or tomorrow in my new post.

Linux Memory Slots Information

Also, one thing that I started believing these days is that there is no job which is small or waste of time. We just have to look at the learning that we can grab from it. I am sure every job teaches us something might not be technical always but I am sure we would have some thing to learn from it directly or in directly.