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
vote
0answers
118 views

Kernel keeps killing Java process due to Out of Memory

I am trying to solve a CPLEX problem using the Java library but the kernel keeps killing my process due to "Out of Memory". I've tried setting memory limits on the CPLEX program and I've tried ...
2
votes
2answers
68 views

Prevent Ubuntu RAM increase rapidly?

I have ubuntu server 14.04 installed in my server. And i have vsftpd server that provide download file test for testing purpose. my question is why if client download the ftp file, my server ram is ...
1
vote
0answers
43 views

Netbeans uses all shared memory

Recently I noticed that when Netbeans is running, many other programs look strange when I run them,for example VLC's "floating controls" look transparent, and there is an overlap of text in the non ...
0
votes
0answers
115 views

Can Ubuntu get slow due to chrome using too much of the ram?

I work a lot with the browser (Google Chrome) and I open many tabs. Sometimes my system slows down and I think it should not happen to a brand new mid range good quality laptop. I am just wondering if ...
0
votes
0answers
21 views

Problem with available memory and can't update

I am using Xubuntu 14.04 LTS. When I use df -h command in terminal, it shows this: Filesystem Size Used Avail Use% Mounted on /dev/sda1 9,1G 8,0G 618M 93% / none 4,0K 0 ...
3
votes
1answer
110 views

Disable RAM memory caching for a particular program

I am running few benchmarks test using binaries made out of C. Is there anyway so I can ask kernel not to cache any part of these binary programs?
1
vote
1answer
199 views

How do I make Firefox in Lubuntu use less virtual memory?

I have Lubuntu 14.04 installed on an old XP desktop, which has an Intel Celeron 2.00GHz and a SiS 651 graphics chipset. I have upgraded it with as much memory as it will take (2GB DDR), and a 120GB ...
0
votes
0answers
85 views

Aquaris phone other files using memory

I have a ubuntu (touch) phone Aquaris E5 (OS 15.04 r6) Of the 16gb of memory, 8gb is 'other' files When checking the memory, (system settings, about phone, memory), lots of file types are specified ...
1
vote
2answers
92 views

limit eclipse from taking over the RAM

I'm using Eclipse in Ubuntu 14.04 for scientific stuff and my code consumes a lot of RAM. When I run my code in Eclipse, I see in System Monitor that the RAM usage goes up to almost 100% and at the ...
0
votes
0answers
280 views

How can I fix 'Memory Corruption Detected In Low Memory' - Ubuntu Server 14.04 on Sony Vaio FW55

I installed Ubuntu Server 14.04 on my Sony Vaio laptop (FW55 Series), and I keep getting these 'memory corruption detected in low memory' messages before I login, after I login, and thereafter. Do I ...
1
vote
0answers
231 views

Why does Ubuntu 15.10 64-bit only detect 2.6 GB of RAM on my 4 GB Laptop?

Mostly Fixed I'm using a ThinkPad X240, and most linux distros report my total RAM as 3.8 GiB, but Ubuntu 15.10 is reporting 2.6 GiB. I'm running 64-bit Ubuntu. I've checked my BIOS, and it says I ...
0
votes
1answer
185 views

64-bit or 32-bit for chromebook w/ 2gb RAM?

To be specific, the computer is the Acer CB3-111-C670. 32-bit is recommended for devices w/ less than 2GB RAM, but i'm not sure if that applies in this case.
0
votes
0answers
173 views

Ubuntu 15.10 not detecting full amount of ram

I've noticed that Ubuntu wily doesn't detect 8gb ram in my pc but shows a total of 6gb with 1gb in use leaving 4gb free. However, i know for certain I have 8gb in it via x2 4gb sticks. The system is ...
1
vote
0answers
49 views

how to enable 1MB dma-kmalloc

I'm running a ubuntu 15.10 VM and testing code that will allocate 1MB dma buffers. However, from the /proc/slabinfo, the max that can be allocated is 8K dma-kmalloc-8192 0 0 8192 4 ...
0
votes
0answers
354 views

Why Ubuntu 15.10 won't free cached RAM?

Description of the problem: The issue I'm having is that kswapd seemingly randomly goes into a wild spin and my laptop becomes totally unusable. (edit) This is not a problem if insufficient ...
0
votes
1answer
102 views

how i can know my graphics card memory size? [duplicate]

I want to know my video memory size and i tried method with lshw -c display But it shows *-display description: VGA compatible controller product: Cedar [Radeon HD ...
0
votes
1answer
42 views

Graphic aberrations when swapping

Ever since I started to use Ubuntu on my ThinkPad X200, I have noticed that in certain situations certain graphical elements (desktop backgrounds, button icons, text) will become distorted. You can ...
0
votes
0answers
57 views

Memory corruption after suspend to RAM

So it is hard to describe why this problem occurs, but essentially after Resuming from suspend to RAM my memory usage is huge (even after I stop all my programs). The CPU seems to be small which means ...
0
votes
0answers
14 views

When does disc swapping happen?

How/When does Ubuntu decide to swap to disc? For the sake of argument, let's say I am running one or more Fortran/Python programs that require more than the 128GB RAM available on the server. ...
0
votes
1answer
239 views

Why is that much memory used while I only have a terminal window open?

I just installed Kubuntu 15.04, installed VLC, Chrome and configured some settings then ran sudo apt-get upgrade to upgrade the system and noticed that 2.6 GB of ram is being used! (and 3.4 GB while ...
0
votes
0answers
19 views

How to implement Memcached in Ubuntu 14.04?

I am working on a Cross Server for my web application, I want to distribute the traffic load. How to implement Memcached on Ubuntu ?
0
votes
0answers
30 views

Slow Perfomance overall

could anyone tell me how to improve my system performance? It is very slow and I do not know the purpose of it. One idea that comes to my head is that my laptop is quite old, but I can recall that a ...
0
votes
0answers
244 views

ECC Memory Error causing Freeze (HANDLING MCE MEMORY ERROR)

My computer freezes with the following event in /var/log/syslog. This can be caused by my ECC memory or my CPU or anything ... It shows that Channel 0 and Channel 1 are affected. What would you ...
3
votes
1answer
86 views

Launching a program like Firefox starts 20+ seperate processes on 14.04 LTS draining the memory

When I launch Firefox the normal way and look in at the processes in htop. Ubuntu starts more then 20 processes called Firefox. They all have more or less sequential PID's. The same happens with ...
1
vote
0answers
82 views

Set limits on processes ubuntu

I am using my ubuntu to do some programming assignments at college and it keeps hanging. For example, If I have an infinite loop in my C code by mistake, ubuntu freezes. If my C program allocates ...
-1
votes
1answer
147 views

Tuning advices? [duplicate]

I'm new to Ubuntu, running 14.04 and I realize how could I get some more speed with 2GB of RAM. If someone could bring some fine tuning advices just to speed things up a quite bit would be great.
0
votes
2answers
187 views

Computer slow and Ubuntu not using Exchange Ram

I'am using Ubuntu Mate 14.04.2 on my Compaq mini and on certain websites it becomes extreemly low, and at that time looking at the system monitor CPU is always at 100%. (see picture attached) I ...
3
votes
0answers
82 views

Ubuntu 15.04 crashes with scattered screen

I have recently installed 4GB DDR3 RAM (Innex) with an existing 2GB RAM (Dynet), currenlty it runs with 6GB RAM. I use Eclipse, Java, Chrome extensively for my development purpose But after this ...
0
votes
0answers
90 views

How can I prevent ImageMagick's convert from locking up my system?

I have a decent 4-core i7 computer with 8 GB of RAM and 45 GB of free SSD space. When I run ImageMagick's convert program on a PDF, it briskly consumes vast amounts of resources such that the computer ...
1
vote
0answers
86 views

constantly files corrupted after ssd and ram upgrade

I have a ~5-year old ThinkPad x201 and it worked fine until I chose to update my ram and disk to now: description: SODIMM DDR3 Synchronous (according to sudo lshw -class memory (M471B5273CH0-CH9 and ...
0
votes
0answers
20 views

linux machine is having Memory errrowith Permantly mounted NFS and Smb Drives

i have Ubuntu version 15.04 server and i have mapped some NFS and SMB network drives to it. this Network Drives contain the MXf files. same Ubuntu server is also A web server so what i am doing that i ...
0
votes
1answer
64 views

Long running kiosk application eats up memory without freeing it

I've a long running application built with PHP/HTML/CSS3/JS running on Chrome on a Ubuntu Server 14.04.03. I've set everything up to make it work and let it run for some days. I've noticed something ...
0
votes
1answer
59 views

Chromium process 16 exabytes of virtual memory? [closed]

I am running Chromium and was looking in the task manager, and noticed that a "chro" process (which I believe is related to Chromium) is occasionally jumping from 1.9GB of memory to 16,777,216TB, or ...
3
votes
2answers
3k views

command to check RAM slots in motherboard?

i have Samsung NP300e5Z 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 slot available in my system. so, how to ...
0
votes
0answers
210 views

Xubuntu 14.04 running very slow after 1 year of usage

OS: Ubuntu 14.04 (trusty) CPU: Intel(R) Core(TM) i7-3610QM CPU @ 2.30GHz Memory: 7944 MiB When I did a fresh install about 1 year ago it was working extremely fast but now it gets really slow most of ...
2
votes
1answer
123 views

Ubuntu not recognizing full ram

I have 32 GB of RAM install in my Dell Optiplex 990. lab@lab-445:~/Desktop/M_series_assembly/M4-M5$ free -m total used free shared buffers cached Mem: ...
0
votes
1answer
33 views

Can we find out the software components which are currently resident in the memory.

Can we find out the software components which are currently resident in the memory. If yes, how? Any command to find the software components?
4
votes
2answers
177 views

How to find the maximum data transfer rate possible from the RAM of my laptop

How to find the maximum data transfer rate possible from the RAM of my laptop. I am using Ubuntu 14.04.
1
vote
0answers
119 views

Xubuntu won't boot after RAM upgrade

I just upgraded the RAM in my notebook, from 3 to 8GB. Right after this, Xubuntu won't start, blinking some text before rebooting and failing again. I could only read "PCC probe failed", but there was ...
1
vote
0answers
117 views

Running Live with 4GB RAM. 32-bit or 64-bit?

I have a laptop with 4GB RAM and it is fully 64-bit capable. However I prefer to run Ubuntu from Live CD or USB. This takes 2GB of the RAM as the main drive. Does that leave me with 2GB of RAM? ...
0
votes
3answers
446 views

How should I customise partition sizes for my installations?

I've been using this guide as my go-to for how to install Ubuntu onto my desktops, particularly the partition scheme: http://www.tecmint.com/ubuntu-14-04-installation-guide/ However, I've realised ...
0
votes
1answer
43 views

64 bit ubuntu onyl recognizeds 3.5 gb of 6gb ram

so i had 4 gb of ram only 3.5 was usable i enabled pae when i installed antoehr 2 gb and it yet only came up with 3.5 gb and now ive wiped my hard drive and installed 64 bit ubuntu and its yet only ...
0
votes
0answers
24 views

Crazy search glitch

Whenever I go to search (in 14.04 LTE) my PC flips out and I have to reboot, I suspect it has something to do with how it has only 512MB of RAM, but it has the 32 bit... It has the following gear: ...
-1
votes
1answer
103 views

upgraded to 6gb of ram only 3.5 showing

k so i had 4gb of ram only 3.5 was usable i upgraded to 6 and only 3.5 are still usuable ive installed the pae kernal after i restarted it amde me reinstall it and it yet didnt recognize the ram ...
-1
votes
2answers
51 views

I increase my ubutu performance withough swap partition? [duplicate]

I ever install Uuntu withough swap partition or file, is that ok?, or i must create one? How can i see if i need it
0
votes
2answers
287 views

Will Ubuntu work on this old machine?

I am trying to convert a old desktop into ubuntu (or Debian) machine. I have already looked up the supported hardware list at wiki.ubuntu.com/HardwareSupportMachinesDesktopsDell but still have ...
0
votes
0answers
156 views

ubuntu 14.04 freezes frequently

I have gone through many Q&A regarding "Ubuntu freezes frequently" and I didn't find any suitable answer for my problem, Thats why I am asking the same Question with all information which I can ...
2
votes
1answer
433 views

“Inactive memory” management on Linux

One of the problems that i face to many times a week on Linux is the inactive memory management. Whenever i copy a a huge file or open a program like Matlab on my Ubuntu i notice that there is a huge ...
0
votes
1answer
93 views

How to configure Ubuntu to utilize more available RAM

I have an Ubuntu laptop with 16GB of physical RAM. However most of the time only 4.5GB are utilized. Are there any configurations I can make to allow or encourage the system to consume more RAM seeing ...
0
votes
1answer
157 views

Intel X4500 + 8GB RAM = no more MTRRs available and X freeze

I have a considerably strange issue with Ubuntu 14.04 LTS. I have two Lenovo T400 machines - both running the .24 BIOS - with integrated Intel graphics and two sets of 2x4GB RAM modules of different ...