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Questions tagged [ram]

Random-access memory (RAM) is a form of computer data storage. Today, it takes the form of integrated circuits that allow stored data to be accessed in any order with a worst case performance of constant time.

1523 questions
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23 answers

I have 16GB RAM. Do I need 32GB swap?

I read many places that the rule of thumb for swap space is to double the amount of physical RAM. However, 32 GB does seem a LOT. Do I need that much? Do I need it at all with this high amount of physical RAM?
Tamás Szelei
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300
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6 answers

How to check RAM size?

What is the command to find the RAM size in my computer? I want to see the result in megabytes (MB).
KonradDos
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244
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8 answers

How to find the frequency and type of my current RAM?

How shall I find out the frequency and type of my current RAM? My OS is Ubuntu 12.04.
Tim
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139
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5 answers

Drawbacks of using preload? Why isn't it included by default?

I would like to know what are the drawbacks of using preload? If there would be no downside, preload would be enabled by default, so I guess there are some. Okay you need a bit more RAM, but most people have by far more RAM then Ubuntu needs - so…
Paradiesstaub
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104
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8 answers

Computer freezing on almost full RAM, possibly disk cache problem

The problem I think is somewhat similar to this thread. It doesn't matter if I have swap enabled or disabled, whenever the real used RAM amount starts going close to maximum and there is almost no space left for disk cache, system becomes totally…
Krišjānis Nesenbergs
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101
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1 answer

What is available memory while using free command?

The output of the free command that I fired on my linux host is as belows: free total used free shared buff/cache available Mem: 263846320 47746620 3290072 1140808 212809628 214382420 Swap: …
Nishant Lakhara
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100
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4 answers

command to check RAM slots in motherboard?

I have a Samsung NP300e5Z Core i5 laptop. I am using Ubuntu 14.04 in this laptop. My system RAM is 4GB and I want to increase it but I am not sure how many memory slots are available in my system. So, how to check how many memory slots…
purna ram
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zram vs zswap vs zcache Ultimate guide: when to use which one

What the hell are they? How are they different (I've written my understanding in an answer below) In the Zswap system, when a page is evicted from the zswap to the actual swap is it stored in a compressed from? (or is it decompressed before…
staticd
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89
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8 answers

How to find how much RAM does my computer have?

How do I find out how much ram my computer has? I am running Ubuntu 13.04.
James
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85
votes
7 answers

How to check video memory size?

Is there a way to check the size of the video memory? Specifically, is there one that works accurately for both integrated GPU's as well as PCI/AGP graphics cards? Many integrated GPU's have dynamically allocated memory, so the solution would…
drgrog
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82
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6 answers

How to check for errors in RAM via Ubuntu?

I have Ubuntu 11 running off a 3.6GB USB flash/stick drive. System has 4GB RAM and blank hard disk (wiped using DBAN tool). How do I check if there are no errors in my RAM? Is there a guaranteed way to check that via some Linux command? If not, it…
Deen
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votes
12 answers

Ubuntu is quickly running out of RAM, and my computer is starting to freeze. What command will solve this?

It happens pretty often to me when I am compiling software in the background and suddenly everything starts to slow down and eventually freeze up [if I do nothing], as I have run out of both RAM and swap space. This question assumes that I have…
Anon
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68
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4 answers

'zeitgeist-fts' always using a lot of memory!

What is zeitgeist-fts?! It's always in the 3 top positions of memory usage (competing with Firefox and Compiz) . After a fresh boot it uses about 30 MB, but after some hours or a day, it goes above 300 MB and stays there ! The file of this process…
Seyed Mohammad
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65
votes
4 answers

How do I run memtest86+?

If I encounter a situation where I suspect my machine's RAM might be going bad, I might need to launch memtest86+ to check it. How can I do this using Ubuntu? Are there different methods for launching it whether Ubuntu is already installed? * (This…
Knowledge Cube
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3 answers

How do I make a RAM disk?

I want to make a partition that is made of ram ... Example In windows 7 you can make a partition that is made of ram I have created 1 GB of partition in ram . using Primo RamDisk Is there any good Alternative in Ubuntu ?
One Zero
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