Missing RAM

Kernels & Hardware, configuring network, installing services

Missing RAM

Postby Palmstroem » 2019-11-12 11:46

My laptop reports that 2 banks of 16384 MiB RAM are installed (BIOS numbers, equal to dmidecode), in total 32768 MiB. BIOS also reports that only 32629 MiB are "available". What is using the rest? Debian reports a still lower value: 31980 MiB (top, equal to free). To be precise, 33533739008 bytes of RAM in total. Again, where is the rest?
Thanks for info on this.
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Joined: 2017-08-12 12:36

Re: Missing RAM

Postby cuckooflew » 2019-11-12 16:39

I don't know where it went, but no need to worry, there is plenty more ram available, and for free here:
Seriously, maybe try this: How to find out what is using my ram on Debian
I am sure you will find results that will help you learn how too run some tests and commands
that will help you determine what is using the ram, etc. I don't think any one can guess what is using the rest, especially wehn you don't even tell anyone what programs you use, what DE, verison of Debian, etc. Zero details = Zero quality answers. Try using some logic.
Please Read What we expect you have already Done
Google knows a lot,
God, our Father knows all, maybe ask Him ,
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One flew over the cuckoo’s nest.

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to God it does :)
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Re: Missing RAM

Postby CwF » 2019-11-12 17:35

...enumeration space
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Re: Missing RAM

Postby p.H » 2019-11-12 21:15

Some memory may be reserved for the integrated GPU.
The output of the following command may also provide information about memory usage :
Code: Select all
dmesg |egrep "e820|Memory:"
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