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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Does Ubuntu have a Windows SpeedBoost feature?

My computer only has 1GB of ram and I want to run a Minecraft Server which requires more ram. Can I use something like Windows SpeedBoost?
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43 views

How to extend the virtual memory in Linux?

I have a 1GB ram pc, is there a way to extend virtual memory? I cannot do anything because my pc is moving horribly slow. I am planning on buying a raspberry pi b+ and really need it fast for a server....
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13 views

Erase swap memory storage when app load decreased

I have enough RAM for most purposes, but sometimes I inevitably get carried away with the number of apps and tabs I have open, pushing short-term memory storage into swap. I'll then do an inventory ...
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1answer
128 views

Linux overwriting RAM with zeroes on free()

I was just wondering if it is possible to tell Linux/Ubuntu to overwrite freed memory with zeroes before letting the next application allocate it? If not, why isn't this possible? I know that ...
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1answer
117 views

Unable to set default value for swappiness

I have an Ubuntu 15.04 64bit with 4GB RAM. I do not have a separate swap partition, but a swapfile of 8GB. The system recognizes the swap. I have tried to set swappiness to 15 by adding it to the ...
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0answers
25 views

Does Ubuntu write to certain memory addresses?

I have some options in BIOS setup that allow caching video BIOS, system BIOS and video RAM to C0000h-C7FFFh, F0000h-FFFFFh and A0000h-AFFFFh, respectively. Does Ubuntu write to these locations? (Doing ...
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1answer
5k views

Performance Ubuntu 14.04.3 LTS vs 15.10

I am running now on Windows 7, but i am thinking about going to Linux (Ubuntu), i have experiences only with debian (VPS) yet :) But i like Linux, so i would like to have Ubuntu as my primary desktop ...
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1answer
147 views

Why is Lubuntu slower than Kubuntu (in the same machine)?

I have a FS Amilo laptop with 2GB of RAM. I have Kubuntu, Lubuntu, and Puppy Linux installed on it. I chose Lubuntu for speed, but my experience isn't as smooth as I expected. The desktop ...
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1answer
53 views

Upgraded from 3gb ram to 4gb ram, ubuntu 15 amd64 will not load and keeps rebooting, unbuntu amd64 live will do the same

I have a Samsung X360 laptop. It comes with 3gb ram installed. I have ubuntu 15 64bit installed. I upgraded the 1gb stick to a 2gb stick. Upgrading from 3gb ram to 4gb ram, ubuntu 15 amd64 will not ...
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68 views

Why is Ubuntu 15.10 x64 Server EDAC giving a slot error for 48Gb ram (x12 2Gb Slots)

I have been running a homelab on a supermicro server that has a total of 48Gb of ram on 12 2Gb slots and I have been getting a repetitive error from EDAC every few seconds. EDAC MC0: INTERNAL ...
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83 views

Changing Shared Memory in Ubuntu

So I just received my i7-4790k and installed it into a MSI z97 Gaming 5 motherboard. However, the shared memory is restricted to 512MB, and it seems to be possible to increase the amount in Windows, ...
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300 views

Chrome/chromium very slow after idle in ubuntu 15.10

I have this pretty strange problem with both chrome and chromium browser. While working with them they are perfectly fine and fast browsers, but if I leave my PC idle for some time like 10+ minutes ...
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0answers
61 views

Edit Aufs Tmpfs partition size

I followed this instruction https://help.ubuntu.com/community/aufsRootFileSystemOnUsbFlash to create a aufs RAMDISK for my xubuntu. It creates a 512MB Filesystem. SO, HOW CAN I CHANGE THAT SIZE FOR ...
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0answers
109 views

Ubuntu showing less ram than before after fresh install

I had Ubuntu 15.04 installed but its support ends in January. And I don't have that much bandwidth and money to do a upgrade every 9 months so I turned back to 14.04 and upgraded it to 14.04.3. But I ...
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1answer
119 views

Kswapd0 using 100% of CPU

I've got a mini server running (L)ubuntu 14.04.3, kernel 3.4.39. Every once in a while, the process kswapd0 will use 100% of my CPU power, even though I only use about ~20% of my RAM at that time. ...
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1answer
163 views

Increase ext4 partition size by decreasing Swap memory size in linux [duplicate]

I was a newbie while installing linux mint 17.2 in my laptop. So I allocated more than 20GB for my swap memory and 30Gb for ext4 partition. Now only I realized that swap memory is using instead of RAM ...
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135 views

kernel panic not syncing, after RAM upgrade

I have a motherboard Asus Rampage IV Extreme, processor Intel 4930k 6 cores, and 32Gb RAM Corsair Vengeance CL9 1866Mhz. I upgraded to 64Gb RAM Corsair Vengeance CL9 1866Mhz. Using RAM at 1333Mhz ...
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114 views

Memory corruption detected on Ubuntu 14.04

I have been using Ubuntu 14.04 for last couple weeks (may be month). Today, I have updated a large chunk of softwares and installed a new ram module (4GB extra). I have installed Java7 and 8 and ...
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2answers
4k views

fdisk -l shows 16 ram disks /dev/ram0 … /ram15

Ever since I upgraded to 15.10, fdisk -l reports 16 ram disks (/dev/ram0 ... /dev/ram15). I'm a bit unsure what those are needed for. Is it safe to delete them? If not, how can I get rid of that fdisk ...
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46 views

Memory RAM upgrade on Dell 15 3521 running xubuntu

I got a RAM module SODIMM with 8GB DDR3L 2133 Mhz and I upgrade my laptop which had a DDR3 6GB RAM at 1600 Mhz speed (1 module with 2GB and 1 with 4GB), now I have 12GB in my laptop, my question is: ...
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1answer
37 views

how free memory showing as 174G, even i dont have that much RAM [closed]

xxx@xxxl:~$ df -h Filesystem Size Used Avail Use% Mounted on /dev/sda1 228G 42G 174G 20% / what is difference between Normal G and this 173G ? Is that all free memory is ...
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5answers
110 views

How can I know how much free ram i have left on Lubuntu?

I don't know how to see a graphical representation of how much ram i have left.
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0answers
78 views

Performance penalties of using zram on a high-memory machine

I've heard zRAM does wonders in low-memory machines, like allowing to have 20 tabs open in a browser window without swapping or OOM - all that even without noticing that zram has kicked in! I am ...
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19 views

Can I install Ubuntu touch on any android phone which got 1B RAM and 4GB internal memory? [duplicate]

Currently I'm using Lava IRIS 504q mobile running about 4.2 Jelly Bean... It has got 1GB RAM and 4GB internal storage out of which nearly 1GB memory is reserved for apps.... Memory is expandable up to ...
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1answer
1k views

Increase dedicated video memory on Intel HD graphics [closed]

I was going to try and run EVE Online with PlayOnLinux on my Acer Aspire V3-371-79XR. The laptop has Intel HD Graphics 5500 inside, an i7 core and 8 GiB of DDR3 ram. I checked the dedicated video ...
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138 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 ...
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2answers
82 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 ...
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0answers
47 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 ...
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0answers
184 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 ...
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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 ...
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1answer
116 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?
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1answer
242 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 ...
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0answers
102 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 ...
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2answers
112 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 ...
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0answers
335 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 ...
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0answers
277 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 ...
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1answer
197 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.
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182 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 ...
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0answers
57 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 ...
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364 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 memory....
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1answer
115 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 5000/...
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1answer
44 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 ...
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0answers
58 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 ...
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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. ...
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1answer
297 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 ...
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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 ?
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0answers
31 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 ...
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0answers
296 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 ...
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1answer
89 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 ...
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101 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 ...