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.

learn more… | top users | synonyms (1)

-1
votes
0answers
15 views

Can be instaled more than 32 GB RAM on Ubuntu 10.04 64 bit XEN VM? [on hold]

Does Ubuntu lucid support more than 32 GB of ram? I have a XEN server running a PV guest. I upgraded from 32 to 64 GB RAM. The domain0 (host) sees all the RAM and starts the domainU (guest) with all ...
1
vote
1answer
15 views

Ubuntu Live CD/USB - Available Space

I recently used a Live CD to resolve a file access issue on a .7z archive. I am a new Linux user and initially concluded that I could not install p7-Zip (or other software) in a live session. I later ...
0
votes
1answer
30 views

Why doesn't my machine tell me it's memory type?

I wanted to see my memory type information (ex: DDR2, DDR3, DDR4) with the commands below, but it doesn't say. What's the reason? Is there a way I can know? $ sudo lshw -short -C memory ...
0
votes
0answers
16 views

Why my system is not showing me the updated amount of RAM?

Before my laptop was running with 2GB RAM; I've installed new 2GB RAM. But system is still showing RAM an amount of 2GB instead of 4GB.
0
votes
1answer
14 views

Boot stuck at IRQ 22

I'm running Ubuntu 14 on a Macbook any my system froze so I performed a hard reboot. However when it came back up, it shows me the grub menu but no matter which kernel I pick the boot freezes with the ...
0
votes
1answer
23 views

Help me to interpret my memtest+ result and guide me what to do next

I have previously installed and enjoyed Ubuntu and had both 12.04 and 14.04 but I uninstall both of them and installed 14.04 LTS and it was a disaster for me. Could open my PC anymore due to many ...
1
vote
2answers
60 views

Increase processor utilisation of one application/program

I use ClustalX to align few unusually big sequences on my home desktop, this takes more than a week to complete and runs well below the maximum capacity of the machine. The top | grep clustalx gives ...
1
vote
3answers
49 views

Speeding up ubuntu machine [closed]

Does below command improved performance of the machine: sudo sync && echo 3 | sudo tee /proc/sys/vm/drop_caches I know this is for freeing RAM. Please guide
1
vote
1answer
24 views

Can I freeze an application to run it at a later time?

Though it might seem silly, I want to freeze an application that I can not save my progress in (specifically games where I have to play a full level, and time is short sometimes but I still would love ...
1
vote
1answer
20 views

why does free command show more memory usage than other tools [duplicate]

When I use free -h -l command I see 1.8G in use where system monitor app shows me 1.1G in use. total used free shared buffers cached Mem: 1.8G 1.7G ...
0
votes
0answers
32 views

Too much hard drive operations, memory management problem, probably

This may be a vague question but I hope to get your feedback. If I am correct that when memory is full, OS starts paging or swapping to use parts of the hard drive. My hard drive is always operating ...
0
votes
1answer
44 views

How much RAM I can upgrade my netbook? [closed]

I have a old netbook acer aspire one ZG5 which has 512MB DDR2 fixed on the mother board and one slot for second device of RAM which I suppose the max amount of ram added is 1GB! Can I upgrade this ...
0
votes
1answer
29 views

0 byte memory left after update

since a few weeks, I faced the same problem several times. All of a sudden, I get a system message like "0 bytes memory left on hard drive". Naturally, programs stop working normally and I can't save ...
0
votes
0answers
38 views

Running Heroes of the Storm on Wine

I installed heroes of the storm and changed it to the 32-bit client (like it says to do on wineHQ), but everytime I run it, the screen becomes completely red, and if I do anything it crashes and says ...
0
votes
1answer
26 views

Ubuntu system Does not see ram

I am running ubuntu 14.04 and just installed 2GB of ram in addition to the 4GB I already have. However when I look under about computer it show me only having 2.7 . when I run "sudo lshw -class ...
0
votes
0answers
43 views

Ubuntu 15.04 does not recognize all my ram

I am running Ubuntu 15.04 and in the system monitor it tells me I have 7.8 GB of ram, but I have 16GB installed. My graphics card only uses 2GB, so where is the rest? MemTotal: 8157900 kB ...
0
votes
0answers
67 views

How to install Ubuntu on mac via usb drive without erasing anything on the mac

I want to install Ubuntu 15.04 on my mom's iMac. I'm new to these things and I don't want to erase anything on her computer, as she has many files and pictures. I installed the "preview" I guess i ...
1
vote
0answers
26 views

Can I Install RAM Wipe Feature at shutdown/reboot of Backbox in Ubuntu 14.04

We decided to use Ubuntu 14.04 in Full Disk Encryption along with the Nuke crypt setup patch released for Kali-Linux as an extra layer of security but I would like to know that is it possible to ...
1
vote
0answers
36 views

Extremely slow OS. Swap related?

I really hope you can help me. An inexperienced sysadmin, installed Ubuntu on a new Dell Desktop, it's a pretty powerful machine, and I ran a bunch of hardware tests, and can confirm that RAM/HDD and ...
1
vote
2answers
48 views

What do these numbers mean in syslog?

I'm trying to determine why MySQL server process is being killed due to out of memory, so am looking at the sylog. Immediately before the 'out of memory' I see lots of lines with differing numbers but ...
1
vote
1answer
38 views

Record RAM usage during runtime of a Java Application

I want to evaluate how some code transformations change the RAM usage of a Java Application. Is there a possibility to log the average RAM usage or the highest peak of the RAM usage in the shell ...
0
votes
0answers
20 views

after system update 4GB RAM decreased to 2.5GB (Ubuntu 14.04 x64)

after update ubuntu about a month ago, the amount of available memory dropped to 2.5 GB. Bios sees normal 4GB, before upgrade Ubuntu also saw 4GB the same problem: 4GB RAM installed, Ubuntu shows ...
0
votes
0answers
16 views

VRAM usage from DE

I'm using NVIDIA GT 705 /1gbDD3.64bit.48CudaCores/, Ubuntu 14.04 with Gnome 3. While playing Heroes of the Storm VRAM usage is going up to 945 so here is the question: Will it makes difference if i ...
1
vote
1answer
47 views

Ubuntu 14.04.1 is consuming 7.8 gigs of 8 gigs ram?

Actually had to create a new account due to openid 2.0 obsolete....I havent been on Askubuntu in quite awhile but tonight I was doing some work on a website when noticing my computer for once was ...
1
vote
1answer
31 views

How to specify the memory size in ubuntu in GB?

I am trying to know what is the memory size in GB in a Ubuntu server. What do these values mean? >> free -to total used free shared buffers cached Mem: ...
0
votes
1answer
57 views

Maximum RAM for my Ubuntu and laptop? [duplicate]

My laptop is Thinkpad T400, and running 64 bit Ubuntu 14.04. I wonder if there is no limit of the RAM size that I can use in my laptop? Now I am running Windows 8.1 in VirtualBox, which takes 2GB ...
0
votes
3answers
412 views

Why does 15.04 freeze?

The issues are listed in this link, but I'll relist/summarize here: Ubuntu 15.04 is locking up on me, primarily when watching internet videos or listening to Slacker Radio. I have Ubuntu installed on ...
0
votes
0answers
21 views

Prevent page cache above certain RAM usage level

Someone here on AskUbuntu pointed out that disk caching is harmless thing, that only makes your disc read times faster. And that it is birds singing and flowers only. I kinda have to disagree: I ...
2
votes
2answers
249 views

Ubuntu won't boot with over 4gb ram

When booting Ubuntu 14.04 server LTS with more than 4gb Ram the computer displays a black screen. I have an Asrock D1800B-ITX motherboard. The processor is an Intel Celeron J1800 (64 bit processor) it ...
0
votes
0answers
72 views

How to find swap usage per process when conventional methods fail? (15.04)

I'm having some difficulty determining what is using my swap space on Ubuntu 15.04. Even though I've set vm.swappiness to 1 and have more than 1/2 of my 16GB of RAM free (or at least unoccupied by a ...
0
votes
0answers
48 views

vmware workstation on ubuntu 14.04 do not use ram and swap don disk

i have a strange problem, just get new notebook, moved disk from old notebook. new pc have intel i7 with 8gb ram, ubuntu 14.04 64 bit on board (previous was 3gb ram). i'm using vmware workstation ...
0
votes
2answers
27 views

conky RAM usage - does not show large file in ram disk (tmpfs)

My conkyrc file contains the following: ${color grey}RAM Usage:$color $mem/ $memmax - $memperc% ${membar 4} This shows RAM usage numerical values and a bar, for example "1.01GiB/ 7.79GiB - 13% ...
0
votes
0answers
43 views

How to get Ubuntu to run off a usb stick on RAM?

It's easy to put the iso on a usb stick to either install on a hard drive or 'try' it out. But just trying the latest distro even running on a usb3 stick takes forever to test run. And once there, you ...
1
vote
1answer
40 views

High RAM usage.

watch -n 5 free -mprovides me with: Total: 7934 Free:6233 However, my system monitor says I'm using 50-60% just while running Chrome and Spotify? To me it seems a tad high. I'm on a desktop PC, ...
0
votes
1answer
90 views

Ubuntu 14.04 too slow and laggy!

I have Lenovo Ideapad y510p and have dual boot Ubuntu 14.04 with Windows 8.1 and I uses Ubuntu for all my work specially for developing Android apps, I have 8GB of RAM and 9GB for swap, but it's so ...
0
votes
1answer
127 views

8GB RAM installed, free only shows 4GB

I've installed 8GB of RAM (2x4GB) in my computer. Before I have only 4GB (1x4GB), and I've installed the new cards one where the oldest was and the other in the other slot of the same type. But if I ...
0
votes
1answer
49 views

ram usage is too high after update of fglrx driver

yesterday when i update my computer it asked new version of fglrx driver available to use? so i choose new version. after i notified my ram usage is too high so my computer is too slow and stuck for a ...
0
votes
0answers
176 views

Unable to find an initial ram disk that I know how to handle

After upgrading to the next linux image, aptitude has outputted the following lines: Setting up linux-image-3.16.0-38-generic (3.16.0-38.52~14.04.1) ... Running depmod. update-initramfs: deferring ...
0
votes
1answer
28 views

How do I find out why I get anytime the same error message from an original Ubuntu script?

Swap2Ram.sh always produces its error message, even when I have enough ram left. Any ideas? #!/bin/sh mem=$(free | awk '/Mem:/ {print $4}') swap=$(free | awk '/Swap:/ {print $3}') if [ $mem -lt ...
0
votes
1answer
149 views

ZRAM vs. regular swap partition

I don't fully understand the functionality and the potential advantages of zram. For example: once zram is activated, what percentage of memory will be dedicated to paging? Another issue: obviously ...
0
votes
2answers
52 views

How to allow a process to use more memory

I am trying to run a game on Steam at a decent speed. I exceed the system requirements for this game, and the game is already set to minimum graphics, but it is still running slow. I have been using ...
1
vote
1answer
24 views

Need help, computer not registering RAM [closed]

I built a computer out of an old case and parts that I ordered. Initially I got 4gbs of Crucial ballistix ram, and since I intended to use this computer for casual gaming I upgraded it to 8gbs. At ...
0
votes
0answers
20 views

fcitx process using more memory

yesterday i activated onscreen keyboard after notified fcitx process use 2600 Mb of ram so my machine is super slow,but everything is ok when i kill that process,what is this fcxti process and what ...
0
votes
0answers
35 views

How to monitor the effect of increasing or decreasing swappiness?

I'm on a system with 1.5GB RAM (don't laugh!), half of which is generally being used by Firefox. Currently, 3% of the 3GB Swap are being used (some 80MB). I tried to change the swappiness like so: ...
2
votes
2answers
104 views

My computer halts for short times intermittently. Is it related to my fan making a lot of noise?

I have two problems with my computer. The system is halting for short times intermittently so the computers becomes almost impossible to use for short times that can happen just when the computer ...
1
vote
0answers
135 views

Firefox eventually for no aparent reason consumes all CPU and RAM and grinds to a halt pulling my computer along with it

I now use Firefox as my default browser and have found that after having it up and running for several hours, that it starts to use up more and more of my CPU and RAM, and this does not appear to have ...
1
vote
2answers
86 views

Why does the system report 7.7Gb of total Ram when I installed 8Gb?

Why does the system report 7.7Gb of total Ram when I installed 8Gb? I'm using 14.04 on a Dell Vostro 2011
1
vote
1answer
67 views

Can I install Ubuntu 15.04 (Vivid Vervet) in place of Ubuntu 14.04 LTS and keep all my data (media, documents, etc)?

I have been using Ubuntu 14.04 LTS for the better part of a year, but lately I keep having problems with my OS. I repeatedly get a message about not enough space in the boot, and when I attempt to ...
129
votes
18answers
89k views

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 ...
31
votes
4answers
35k views

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 ...