Manufacturer: Micro-Star International Co., Ltd. On my laptop, command line probes say I have 4 slots (2 used, 2 empty), yet upon unscrewing I actually have 2 slots (perhaps I have 2 hidden slots elsewhere yet not visible removing bottom panel) : sudo dmidecode | grep -A 9 "System Information" I’m sure it works on others but those are the only ones I have access to. This works on debian, ubuntu, and redhat. However, if -Xms or -Xmx is absent for the Java process you are interested in, it means your Java process is using the default heap sizes. and look for -Xms, -Xmx to find out the initial and maximum heap size specified. Board has only two slots for RAM, but they have to be double channel.Įven though the OP prefers to avoid unscrewing to physically inspect, I strongly suggest everyone do just that since the answer back from command line probes can be misleading. Display available memory on Linux / Ubuntu. In terms of Java heap size, in Linux, you can use. That info is shown by doing: # dmidecode -t 17Īnd, as you can see, Bank 2 is full and Bank 0 empty. I would like to point out that I have only 4 GiB of RAM in one module. I hope you liked this post and help us to grow by sharing it with your friends.Reports this: Handle 0x000A, DMI type 16, 23 bytes The free command although it is one of the simplest that you can find, the truth is that it can help us a lot in the memory management of our computer. So, as you can see, it is easy to use the free command in Linux. Or if you want to make it continuous but set an interval of seconds, you can use the -s option free -h -s Īnd to end the execution of the command, you can press the CTRL + C keys. Remember, you have to replace by an integer that specifies the repetitions. If you want to do more continuous monitoring, you can specify the number of times to run the command. This summary includes real-time information on memory usage, so you can use it as a monitoring app as well. It’s like a summary of the totals of the main and swap memory. The top command-line tool will give you a summary of all the running processes. Using the -t option, you can add a row called total at the end of the output to totalize. free -h Using the free commandĪs we can notice, now the units are expressed in a better and more understandable format for humans. To improve it, you can use the -h option. More usesĪs we can notice, it is a simple command to use, but it expresses the amounts in a not very understandable format. The last row shows information about the swap. We can use the free command to check the sizes of the buffer memory and cache memory: free -h total used free shared buff/cache available Mem: 7.6Gi 6.4Gi 170Mi 402Mi 1.1Gi 573Mi Swap: 2.0Gi 589Mi 1.4Gi.
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