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 do you hotplug enable new CPU and RAM in a Virtual Machine

I am running Ubuntu in a virtual machine and I'd like to add CPU and RAM without rebooting the device. How can I hotplug this new virtual hardware?
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59 views

Why “Xenial Xerus” spend twice memory than “Wily Werewolf” and make Ram memory overflow? [on hold]

Why "Xenial Xerus" (Ubuntu 16.04 LTS) does not work properly and make Ram memory overflow, while "Wily Werewolf" (Ubuntu 15.10) work right? Xenial Xerus is spending to start more that twice amount of ...
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0answers
22 views

High usage of ram in Ubuntu 16.04

I have a problem since I upgraded from 15.10 to 16.04 some days ago: My ram is almost completely full! I have 8 GB of ram on my system, currently 6,9GB are used (with just firefox open). I've ran a ...
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0answers
28 views

RAM Memory Not Recognized

Today I put a new 8GB RAM, replacing the old 4GB one, but it's not recognized by Ubuntu nor by Windows 10 (I have dual OS). Now I have only 4GB recognized because I didn't replaced both of them. I ...
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1answer
32 views

I've more than 60% of free RAM but i can't run a simple php file

I'm trying to run a simple .php file in my local environement : (Ubuntu 15.10 - Intel® Core™ i7-4600U CPU @ 2.10GHz × 4 - 64-bit - 8GB RAM) So you are seeing that I've more than 60% of free RAM ...
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6answers
28k views

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.
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2answers
38 views

not all RAM recognised ~3.3 of 8GB

-I recently installed some new RAM so that I have 8GB (4x2GB sticks). -The Bios displays all four sticks, however Ubuntu only shows about 3.3GB available. -Both the system details and info from ...
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1answer
31 views

Mediascanner-extractor consuming all RAM in Ubuntu 16.04

I recently upgraded Ubuntu 14.04 to Ubuntu 16.04. Now whenever I plug in my external hard disk, mediascanner-extractor starts consuming all my RAM and Swap space till my computer hangs and I have to ...
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1answer
25 views

14.04 LTS not recognizing all my RAM [on hold]

I recently installed 32 Bit 14.04 on my old XP computer. It seems to have installed without issues, however all of the RAM is not being recognized. In the system info it says 2.4 GiB, I believe I ...
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0answers
22 views

Do I have 2 more free slots for RAM?

I ran sudo dmidecode --type memory and the result was: # dmidecode 3.0 Getting SMBIOS data from sysfs. SMBIOS 2.7 present. Handle 0x000C, DMI type 16, 23 bytes Physical Memory Array Location: ...
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0answers
14 views

Ubuntu server and mysql with bitnami

I'm hoping someone can help me or point me in the right direction. I have an Ubuntu 14.4 server running as a web server which we run a WordPress installation on, We've used the Bitnami installer to ...
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1answer
63 views

High SHMem memory usage!

I have tried everything I could think of so here I am asking this question here... I have a computer that has 8 GB of RAM. After booting the computer, logging in, not opening any applications and ...
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0answers
16 views

Ubuntu running extremely slow on P4 1GB RAM. New Install. Used to run well previously

i am currently running Ubuntu 14.04 64 bit on a Pentium 4 with 1 GB DDR2 RAM. It used to run butter smooth on 2 GB RAM. Unfortunately I had to remove 1 RAM card to use in another old PC. And now, in ...
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0answers
6 views

Xubuntu dunst high RSS

I noticed my computer was being slower than normal so I checked the task manager and sorted by RSS usage, and "dunst" is using the most with 1285 MiB. That's a lot for my system, as I only have 3823 ...
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2answers
79 views

High CPU load, low core usage, (ECC) memory error in kernel

I am having a super weird behavior ... The CPU load of my computer goes through the roof (>4 on a 8core machine) but there is no process that is taking much CPU (see attached image) Though the 8 core ...
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1answer
32 views

How do I tell what type of RAM I have in Ubuntu? [duplicate]

I have a dual-boot system with both Windows 7 and Ubuntu. Windows normally provides me detailed system information like what type of RAM is used. However, I am currently troubleshooting the PC and I ...
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0answers
8 views

Swap on video ram

I'd like to create Swap on video ram. I don't use my additional graphic card. Is a way to do this in Ubuntu ? https://wiki.archlinux.org/index.php/swap_on_video_ram
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5answers
48k 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 ...
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0answers
23 views

Is there current information on Swap management?

There have been various discussions on this topic in the past with contradicting conclusions. Some people believe that: Swap is unnecessary in modern systems, as usually enough RAM is available ...
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8answers
185k views

How can I monitor the memory usage?

I have used top to see the memory usage at the moment. But I would like to monitor the memory usage over a period of time. E.g start monitoring and then execute a few commands, and final stop the ...
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2answers
27 views

Understanding htop

I am trying to make sense out of htop. I have a virtual PC with 6 GB RAM running ubuntu 15.10. I have installed a few applications on the server: Jenkins, Artifactory and some other tools. When I run ...
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0answers
10 views

How to set a limit for the amount of RAM and/or Swap a process can use?

Is there a way of limiting how much RAM and/or Swap a certain process is allowed to use? It would be nice if I could also apply this to all sub-processes, however it would also be good if there was ...
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0answers
7 views

Ubuntu 15.10 trying to upgrade AMD Desktop memory and getting hangs

I have been trying to upgrade my AMD desktop memory from 2G to 8G. The box runs dual boot with Windows XP, which boots fine although it only recognizes about 3G of memory. When I try to boot to Ubuntu ...
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1answer
21 views

Allocating disk space as memory temporarily

I need to run some application to convert large files (7GB). The converter application isn't nicely written. So it doesn't stream the coverted data. Therefore, it requires high amount of memory. I ...
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1answer
34 views

64-bit Ubuntu seems to think it is 32-bit

Yesterday, I posted this thread, and got a reply, telling me to install 64-bit Ubuntu. I thought I already had a 64-bit copy, so I went to my system Details, and found that I did, indeed have an x64 ...
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1answer
24 views

Build fails after not enough RAM even after swap

I have a 4GB RAM and I have to work in android environment. Some components in the source needs high RAM as a result, I made a swap file of 8GB and I have a 4GB RAM. My RAM is 11mb or less while ...
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2answers
183 views

Out of Memory Issue

I am running Ubuntu 14.04LTS on a Dell PowerEdge R730 with 32 GB of RAM and an Nvidia K80 GPU.. I have a python script that runs for a long time, but really just makes a bunch of relatively ...
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0answers
20 views

A software doesn't have access to enough memory?

I use the software GrandOrgue, and I've had pretty good results with my two MIDI keyboards and some basic samplesets, but when I try to load a larger one, such as the Barton 3/7, it gives me a "Not ...
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votes
2answers
6k views

Why is the evolution-calendar-factory process running?

Why is the evolution-calendar-factory process running? Here are some of the running processes (created with ps aux --forest) lightdm \_ /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten ...
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0answers
24 views

How to lift memory limitation?

My current machine: ASUS K50IJ: 64bit dualcore 1.8GHz CPU, 2GB RAM, intel GMA 4500 I played Half-Life 2 on this machine, on Windows, which has the same engine as Team Fortress 2. Now I only have ...
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0answers
30 views

Swap Partition Causing Lock ups/Freezes

I recently added a swap partition and it functions properly. However, I have noticed that whenever I run programs that use a lot of memory (use most of my ram and 1 gb of my swap), my GUI locks up, my ...
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0answers
28 views

Does Ubuntu limit svn process memory if ulimit returns unlimited?

I am trying to commit a file using svn it crashes with an Out of memory error. I am running Ubuntu 14.04.1 and have 6G memory, 6G swap partition and 12G swap file. I am able to use svn to commit ...
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0answers
19 views

Help interpretting memtester output?

Ok, I decided to try memtester on my computer because it was crashing frequently. I have the results, but am not sure how to interpret them. Any help would be fantastic! memtester version 4.3.0 ...
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2answers
264 views

System consumes all memory even after hardware upgrade

Previously, I had a 4GB RAM server with Linode. Several times, I did "free -m" command to check available memory. Most of the times it showed less than 200 Mb free. Major processes I am running ...
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0answers
164 views

Failed to alloc mem for ROM

So recently, I've bought the HP Pavilion x2 detachable. It came with Windows 10 but I wanted to install Ubuntu on it. I tried to install Ubuntu 15.10 but every time I tried to do that, the computer ...
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3answers
11k views

How to read correctly output of “free -m” command?

The output of free -m command gives: total used free shared buffers cached Mem: 595 482 112 0 63 ...
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3answers
3k views

Testing my system, I need a script that will use as much ram and swap as possible

I'm testing my system with zram, I need a script that will use as much ram as possible. This script should fill up my ram with random stuff not just zeros.
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1answer
4k views

Why does ubuntu not seem to release memory?

I am working with apache2+php and other web server apps. I have monitor as session connecting to a web server. RAM memory is full. But when disconnecting a session, it does not free the RAM memory. ...
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0answers
15 views

Ram compatibility issues

I would like to learn more on RAM compatibility. I know that parallel socketing of RAM makes somehow multitasking easier (the CPU can handle parallel data from the RAM to the Lcache), but I would like ...
0
votes
1answer
504 views

Zcache Usage in Lubuntu

Recently I appended zcache to my grub configuration: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash zcache" But I am at a loss as to whether zcache is working or if I need to do something else. There is ...
2
votes
1answer
35 views

A Simple way to force an “Out of Memory” condition?

I'm working on getting alerts set up. Can anyone suggest a simple way to force an out of memory condition say on a vanilla ubuntu?
0
votes
1answer
31 views

immediate shutdown at boot time with 8GB memory

PC: VersaPro(VK24LX-B) OS: ubuntu 15.10 Today I went a PC shop to upgrade memory from 4GB to 8GB, but the staff told me he couldn't do that.He demonstrated what happened: Changing memory cards, ...
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0answers
33 views

Ubuntu not booting after upgrading RAM and cpu

I have a Ubuntu machine running on Hyper-V It is the 15.10 version 64 bit. I tried to shut it down and then upgrade it from 8 GB og ram to 16 GB and from 2 processor cores to 8. But when I turned it ...
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vote
1answer
41 views

MySQL out of memory

I recently upgraded my VPS from 1 GB RAM to 2 GB because MYSQL kept crashing due to low memory. The server has been running fine for 3 weeks until now. The following is logged to /var/log/syslog ...
2
votes
1answer
47 views

My memory is full but processes list is empty

PROBLEM My memory is full but the processes list is empty of heavy programs! Usage: Total memory is 4GB but only 400MB is free: Monitor with htop: When sorting by %MEM -> heavy programs ...
2
votes
3answers
2k views

Usable ram is half of total memory

Recently i had added a 2GB DDR3 ram in my acer laptop. As a result my total ram is 4GB (2x2). I was running ubuntu 12.04 32bit(pae kernel). Everything was working fine. Now i have upgraded (new ...
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2answers
58 views

Very slow ubuntu Desktop

I have use 2GB With Dual Core Processor Computer, and install ubuntu 12.04, Even though the computer is running very slow, All time Show CPU Uses 100 %, and Memory Uses 100%. So What should i do to ...
2
votes
1answer
49 views

New 16gb of Ram installed yet I see 15.3 on my system. Why?

I uploaded a visual. Just switched 4gbs to 16gbs of RAM. However, when I look at how much memory I have it says 15.3. I'm just wondering why did my memory drop down when I just installed 16 GBs of ...
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2answers
48 views

Normal RAM usage of the Ubuntu 14.04 LTS (Server Version)? [closed]

my question is how much RAM a Ubuntu 14.04 LTS server normaly uses? when nothing is installed on it?
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2answers
61 views

Ubuntu 15.10 64-bit is not working very well in my PC

> System: Kernel: 4.2.0-32-generic x86_64 (64 bit) Desktop: Unity 7.3.3 Distro: Ubuntu 15.10 wily CPU: Single core Intel Pentium 4 (-HT-) cache: 1024 KB clock ...