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.

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How much Swap memory should I alocate for 4GB (3.3GB Useable) RAM in Ubuntu 16.04? [duplicate]

I am thinking of installing Ubuntu 16.04 in My Laptop (HP Probook 440 G1). It has 4GB RAM. SO my question is How much space should I allocate for swap area? Note: 1. I read some articles about it ...
Jahirul Sourav's user avatar
1 vote
1 answer
765 views

Cannot assign more than 3584 mb of ram for guest OS in VirtualBox

I am using Ubuntu 64 bit host operating system and have installed VirtualBox Version 5.1.8 r111374 (Qt5.5.1). I cannot create more than 3584 MB Ram for guest Operating System irrespective of which ...
Kashif Khan's user avatar
2 votes
0 answers
417 views

How to move Ubuntu into RAM AFTER booting, whilst deleting as much as possible?

This post suggests how to move Ubuntu into RAM http://dreamlayers.blogspot.com/2012/10/running-linux-from-ram.html I'm wanting to do pretty much the same, but on a low memory system 512MB or less. ...
Duke Dougal's user avatar
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7 votes
5 answers
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Making a large file using the terminal

I want to make a file that is very large in size for testing purposes that should contains unique words (strictly not repeated). It can in GB, TB, etc. May I do this with the terminal? I am using ...
Avani badheka's user avatar
25 votes
4 answers
178k views

Running any command returns "Cannot allocate memory" on Ubuntu Server

I’m using Ubuntu 14.04. Recently, when I login via SSH with my user with sudo privileges, every command I run results in a “Cannot allocate memory” error. Here are a few I tried at my console ...
Dave's user avatar
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Ubuntu 16.0 poor performance with RAM 2 GB. hangs a lot. What should I do?

My sytem's specs are: AMD 2.8 GHz processor 160GB HDD RAM 2 GB. I am a window user who wants to start with ubuntu. I have installed Ubuntu 16.0 but it hangs all of a sudden. I don't know the shortcut ...
Gaurav Madaan's user avatar
1 vote
2 answers
2k views

Running script was killed

I was running a script on 30k images and suddenly it was killed. What could have caused this? mona@pascal:~/computer_vision/deep_learning/darknet$ ./darknet coco test cfg/yolo-coco.cfg yolo-coco....
Mona Jalal's user avatar
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-3 votes
1 answer
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Linux sees only 1/2 of my RAM? [duplicate]

Linux see only 1/2 of my ram My RAM size is 2048mb, but linux see only 1300mb. Why? No, it's not buffered, because ubuntu free command don't print free buffered RAM Here is output of command free ...
123123's user avatar
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5 votes
1 answer
1k views

Does non-persistent LiveUSB run entirely off RAM, or does it still need read/write cycles?

If I use a LiveUSB, non persistent mode, with the -toram command added to the boot options, will the USB's lifespan be reduced significantly? As far as I understand, LiveUSB runs entirely off the RAM, ...
Arctus's user avatar
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1 vote
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A large download is causing my server to completely crash. Why is this happening and how do I fix this?

I recently got a VPS Ubuntu server. It only has 1GB of RAM but the reason why I got it is that it has gigabit so I'm using it as a quick downloader and then Dropbox uploader. I've been trying to ...
Programmer4Life's user avatar
1 vote
1 answer
2k views

Limit terminal command memory usage (previously CPU usage) [duplicate]

I have some binary I want to run in terminal, but if I run it, it quickly starts to use 100% of both CPUs, 100% of memory and the whole Linux freeze in a few seconds. Also I don't have source (in ...
aleskva's user avatar
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What is the process to allocate certain amount of the RAM to Rstudio on Ubuntu

As I am an Ubuntu beginner, this question is about managing R on Ubuntu. I have increased RAM from 4 GB to 16 GB. But sadly spending a month on this problem I still get the error: can not allocate a ...
runjumpfly's user avatar
1 vote
1 answer
1k views

Ubuntu 14.04 does not see all of my RAM

I Have a gateway GN 5048 with 4G Ram installed. The BIOS see the ram but the Ubuntu OS (64 bit) does not. sudo lshw | grep -A 8 bank Shows: *-bank:0 description: DIMM DDR2 Synchronous ...
user260408's user avatar
4 votes
1 answer
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Why Ubuntu LTS 16.04 suddenly shutdown?

I have a problem and can't find a solution. I'm really new in linux system, so ask me for whatever you need. My computer shut down suddenly when I ran some programs (like if I take out the electric ...
Jaime jiménez's user avatar
1 vote
2 answers
2k views

Ubuntu loads slow, and consumes too much memory

I have Ubuntu installed back when 14.04 was new and fresh. Not it has gone through several updates and now it's at 16.04. My laptop has 8GB of DDR3 memory @ 1600MHz with i3 processor. So it's not ...
VukBG's user avatar
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1 answer
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Is there a way to collect RAM usage stats?

This is my configuration: Processor: Intel Core i5-2500K @ 3.70GHz (4 Cores), Motherboard: ASRock H67DE3, Chipset: Intel 2nd Generation Core Family DRAM, Memory: 32768MB, Disk: 250GB Samsung SSD ...
Michelangelo's user avatar
0 votes
2 answers
1k views

Extending ubuntu partition disk memory with unknown filesystem partition in between

So I'm trying to give my ubuntu 16.04 partition more disk space by booting from a pendrive with ubuntu and gparted. I already have a 40gb unallocated disk space, however after watching a few videos, ...
Anto's user avatar
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2 votes
0 answers
2k views

Encrypting RAM for increased security?

I decided to mount some of my apps in RAM (like Firefox to load faster due to being a resource hog); but, am somewhat concerned that this would give privy access to my RAM content during normal ...
Shawn W's user avatar
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2 votes
1 answer
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Does Ubuntu 16.04 64 bit support 2 different RAM sticks with different speeds?

I have a very strange issue in running Ubuntu 16.04, 64 bit on my Dell Inspiron N5110, Bios version is A11. Initially, the ram was 3gb (speed 1333)i.e 2gb + 1gb. I found the computer to be slow and ...
user238607's user avatar
0 votes
2 answers
288 views

Can I install Ubuntu on a PC with less than 2gb of ram [duplicate]

I have a PC with 1.2GB of RAM (Windows says 756MB). I plan to get another 1GB stick of RAM, but for now, can I install Ubuntu even though I don't have the required 2GB of RAM? I'm using DVD to install ...
rmce's user avatar
  • 13
0 votes
1 answer
598 views

Emu8086 assembler not reading correctly

I installed WineHQ yesterday to run emu8086. The installation of emu8086 went smoothly. But when I was working on the software I realized that I can't modify the value in memory while emulating. ...
KVS's user avatar
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1 answer
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System only showing/using 3.1 GB of RAM on notebook with 4 GB

I have Ubuntu 16.04.1 (64 bits, Xenial Xerus) on an HP Compaq nx6320 notebook with 4 GB of RAM. However, the system monitor is displaying only 3.1 GB of RAM, as well as the lshw output. The ...
Lucas D'Abate's user avatar
0 votes
1 answer
1k views

High memory usage with little swap space used

I have 8Gb usable memory and 10Gb swap space available My memory usage is 90-95% used while only +/- 1gb swap space is used. Do I misunderstand the purpose of swap space or is there some issue on my ...
CybeX's user avatar
  • 526
-2 votes
1 answer
80 views

How RAM does Ubuntu accept in 32 and 64 bit? [duplicate]

I would like to make a question. I will install Ubuntu OS along my Windows Enterprise 10 x64 bit. When I go to ubuntu.com to download the operating system I see like alternative options 2 version : 32 ...
Bledi Bali's user avatar
2 votes
2 answers
2k views

Ubuntu freezes when RAM usage peaks

I've been often annoyed on Ubuntu when there's a peak in RAM -- for example when starting Android Studio's emulator or when a Chrome tab freezes -- the whole GUI freezes and so I'm forced to either ...
Daniel's user avatar
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1 vote
1 answer
116 views

It is secure to upgrade the RAM of a 32-bit Server? [duplicate]

I'm a new I.T. guy in my company, and while I was checking the servers, I found that, to my surprise, the server is using a 32-bit version of Ubuntu, but is using almost all of the installed 8GB of ...
Elber CM's user avatar
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0 answers
757 views

Can't see the flash memory in file manager

I've an Ubuntu 16.04 but, i tried to copy some files onto a flash memory. in copying time, i ended the copy operation and i disconnected this flash memory. Now, can't see the flash memory in file ...
Amir Qasemnezhad Moqadam's user avatar
5 votes
2 answers
2k views

How to clean or overwrite RAM and shut down computer by homemade shortcut to defend cold boot attack? [closed]

My system is protected by Full Disk Encryption. The weak point of my computer is RAM which lives a bit after computer is off, containing some important safety information I would like to clean up. ...
Krzysiek Witkowski's user avatar
2 votes
1 answer
2k views

sudo: main: unable to allocate memory (Inside of Linux Container)

I am trying to build a 32 bit version of Wine in a Linux container. When I start the container, attach, and login, and enter the command sudo apt-get update I get the error sudo: main: unable to ...
javaWebDev's user avatar
2 votes
2 answers
1k views

16.04 detects 3.6 GB of Memory from a total of 32 GB

I am making the transition from Windows to Ubuntu. My desktop has 32GB of physical memory installed and all detected by BIOS and previous versions of OS. Since I have moved to Ubuntu 16.04, it only ...
TechE Monk's user avatar
1 vote
1 answer
577 views

3.2gb Out Of 4.0gb 16.04

I hope I'm putting this on the right website. I'm not completely use to terminal commands, so sorry if I put the wrong ones. I upgraded from 2gb to 4gb DDR2 RAM. In bios, it shows up with the full ...
RedStar12's user avatar
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0 votes
1 answer
201 views

Should my Ubuntu be running a swap file?

My Ubuntu system has been slow since recent updates. Usable for some things, but Facebook in particular has slowed to a crawl. A facebook video takes 5 to 8 minutes to load. The Gnome system monitor ...
alisdair810's user avatar
1 vote
0 answers
3k views

"Alloc magic is broken" Ubuntu 16.04, dual boot

I installed Ubuntu 16.04 from live USB, Installation was successful. But after restarting and selecting Ubuntu option, a blank purple screen showed for a few minutes, and then I got this error error:...
KUSHA B K's user avatar
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42 votes
3 answers
19k views

Prevent Ubuntu from freezing, even if system memory is low

Sometimes I work with huge dumps of data I want to keep in memory for processing. Sometimes I miscalculate the amount of memory my program will produce, or a debugger multiplies the memory usage by a ...
Klamann's user avatar
  • 731
0 votes
2 answers
37 views

Additional Memory? [closed]

I am trying to install 16.04 LTS on an old Dell currently running 12.04 and Windows XP. I was told to upgrade memory to 2 Gigs and am wondering if new memory sticks should go in slots marked #1 and ...
RoscoeVanBuren's user avatar
25 votes
4 answers
24k views

Google Chrome will take up my memory to the point where it causes my computer to freeze to a near halt. What can I do to prevent this?

It gets so horrible that I can not even switch to TTY1 to force a reboot. I have to hard reset, and I lose work. Ideally, I would like to be able to use the chrome browser on Ubuntu without having to ...
Anon's user avatar
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1 vote
2 answers
5k views

How can I track resource usage on Ubuntu over time?

I am thinking of wanting to get an idea about how my system is running over a 24 hour period or maybe 48 hours. It would be desirable to see if there is any period where the cpu and memory resources ...
Bruce Whealton's user avatar
0 votes
0 answers
653 views

Securely wipe RAM before shutdown

I want my machine to wipe RAM before every shutdown, so I can prevent cold-boot attacks. I read How to wipe RAM on shutdown (prevent Cold Boot Attacks)?, but I don't know at which version of Ubuntu ...
PKM's user avatar
  • 819
4 votes
1 answer
1k views

'free' command shows available ram less than buff/cache!

I have a laptop running ubuntu 16.04 with 4gb ram. I've been using it for about a month now and recently I noticed that the system slows down a lot even with only 3-4 apps running. This is the output ...
saga's user avatar
  • 190
2 votes
3 answers
3k views

unexpected Memory Usage in Ubuntu Gnome 16.04

I am a long time Mint user, was using cinnamon for the past 3years, I have installed Ubuntu Gnome 16.04 today in my new machine, the memory usage of gnome is shocking, it uses 1.2 gigs of RAM with no ...
Packiya Rajan's user avatar
0 votes
0 answers
225 views

How to increase paged pool memory?

Whenever I launch a game in steam, after a level or two, the game will crash with an error that says: Failed to lock index "buffer in CMeshDX8::LockIndexBuffer" Is there a way to allocate more ...
Ґрадон Хатчінсон's user avatar
1 vote
0 answers
5k views

Does Ubuntu use the IOMMU or can it be activated?

I have an AMD chipset and CPU with an integrated IOMMU (AMD I/O Virtualization Technology). Recently, I read that these chips can be used by the system to prevent access to the full physical memory by ...
Prototype700's user avatar
1 vote
1 answer
94 views

Why does my system use 2 GB of memory when I have only one application(chrome) running?

Here are two pictures of the processes and Resources tabs of my System Monitor. Also, do you think updating the system to 16 could solve this issue?
Harsha's user avatar
  • 508
2 votes
1 answer
291 views

How to prevent Ubuntu from becoming unresponsive when not having enough memory?

When I open an application for which there is not enough memory, Ubuntu becomes unresponsive. The problem seems to arise from the way Ubuntu handles swap (as kswapd hogs CPU usage in such a situation)....
Reza's user avatar
  • 1,235
0 votes
1 answer
420 views

Ubuntu 14.04 64 bit is showing only 3.2 gib ram

My ubuntu installation is 64 bit. I have read about 4gb ram issue but this is 32 bit problem. I have checked it's showing 3.2 Gib ram in two slots instead of 4 Gib. It's showing only 3.2 gib: Here ...
SKU's user avatar
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3 votes
2 answers
9k views

Clear memory cache using Crontab

I'm trying to clear memory cache using cron. Cron file: */2 * * * * ~/clear_mem.sh clear_mem.sh: #!/bin/sh sudo sh -c "sync; echo 3 > /proc/sys/vm/drop_caches" touch f File f is created every ...
Long Smith's user avatar
2 votes
1 answer
2k views

lshw unclaimed memory and processor core [closed]

How do I claim back unclaimed memory and processor core. Below is the output of sudo lshw.I put in 2 sticks 4gb each and have 64 bit 16.04 lts system description: Computer product: Aspire ...
analyst's user avatar
  • 21
1 vote
2 answers
2k views

Ubuntu 14.04-64bit with 1GB RAM [duplicate]

I have an old Acer Aspire 4920 bought in 2008 or so with 1GB RAM, Intel Core 2 Duo processor. I had windows 7 on it. I erased it for obvious reasons and installed Ubuntu 16.04, but later felt its slow ...
ravi's user avatar
  • 11
2 votes
2 answers
1k views

16.04LTS 64bit sees only 3.9GB of memory out of 8GB

free -m output: total used free shared buff/cache available Mem: 3951 1291 1720 41 939 2362 Swap: 4094 ...
Chris's user avatar
  • 21
2 votes
0 answers
650 views

16.04LTS 64bit sees only 3.5GB of memory out of 8GB [closed]

I decided to move out of Windows 10 and I just finished with a clean install of Ubuntu 16.04LTS 64bit version - all updates to date . Problem is that it sees only 3.5GB of RAM. I checked the BIOS, ...
Chip S's user avatar
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