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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Ubuntu and Live USB won't Boot after power cut 15.04 BTRFS

I didn't think this was a problem until it happened to me twice on two different systems and have never seen this before. First time I was running Xubuntu 15.04 on a Lenovo T61 using BTRFS. The ...
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How to get a good overview of RAM usage

I have installed Ubuntu 14.10 on a server. The server main task is running a MongoDB installation along with several NodeJS applications. The NodeJS applications will run continuously and will accept ...
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Is it safe to delete a Swap Partition on a USB install?

I have a Ubuntu 14.04 installation on my 32gb USB drive. I recently read that having a Swap causes a lot of reads and writes to the drive making the OS slow and reducing the lifespan of the drive. ...
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Near fresh install of Ubuntu 14.04 desktop converted to Xubuntu using > 1GB memory. What is using up my RAM?

TL;DR: System Monitor is showing that I'm using > 1 GB RAM at startup for a "near fresh" install of Ubuntu 14.04.2 desktop converted to Xubuntu-desktop. This seems a bit much for a desktop that is ...
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1answer
29 views

32 bit or 64 bit becauce of upgrade of RAM? [duplicate]

On an old Dell PC that originally ran Windows XP 32 bit that I erased the Windows XP 32 bit and installed Ubuntu 32 bit on with less than 2 gigs of RAM. I would like to upgrade the RAM above 2 gigs. ...
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1answer
38 views

Too much swap, how do I change it?

I'm new at Ubuntu and I'm fiddling around with Ubuntu Server 14.04. I'm trying to get it to run a Minecraft server, but whenever anyone joins, it starts skipping ticks and players reported heavy ...
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30 views

How can I make the apps in ubuntu phone using the SDcard instead internal memory?

Pls, if someone has an helpfull answer: When I download a video with "DOWN NOW", it goes by default directly into the internal memory. But as there is not enough space, so I need it to go the SDcard. ...
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1answer
31 views

How do I Increase the memory of Ubuntu text-mode/console-mode? [closed]

First off, I'll preface, with the fact that I do not know if this is necessary or my problem, but I think that it is. The issue I'm having is that I have a program that runs in text-mode but is only ...
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1answer
41 views

Can Ubuntu 32-bit access 8GB RAM?

I need to use a large software package (Xojo) that requires the 32-bit architecture to run. Try as I might, I can't seem to install the 32-bit libraries on my 64-bit installation of 15.04. I don't ...
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22 views

All Networking disabled after RAM upgrade [virtual]

After running a rather large script file from the terminal I got a Java memory heap error. So I decided to try increasing the RAM to resolve the problem... However, after upgrading the RAM from 2048 ...
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12 views

Not Enough Memory to Analyze and Send Problem

I got this message: "Sorry, the program "soffice.bin" closed unexpectedly Your computer does not have enough free memory to automatically analyze the problem and send a report to the developers." ...
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1answer
30 views

Ubuntu sees 3 out of 4GB of RAM on PAE supported 32bit system

I have 4 gigs of memory inside my laptop but only 3 gigs are showing up and PAE is supported as shown below. Why can't I use all 4 gigs of memory even though my 32 bit system shows that it supports ...
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39 views

How much use of swap space means that I should add more memory?

My system is slow and I am trying to figure out if I need more memory or a better system. I am using Ubuntu with 32 GB RAM. $ free total used free shared buffers ...
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0answers
24 views

Ubuntu 14.04 randomly freezing [duplicate]

I have Ubuntu 14.04 running on a Thinkpad T440 with Intel Core i5 Vpro 4gb with Intel Haswell graphics but it is randomly freezing with no reason. Recently I didn't have made any big change on the ...
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0answers
26 views

How to increase Locked Memory size in Kubuntu?

I am trying to run Ardour in Kubuntu and I get this error: Your system has a limit for maximum amount of locked memory. This might cause Ardour to run out of memory before your system runs out of ...
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2answers
44 views

Why does Lubuntu shows less RAM than installed?

I am using Lubuntu 14.04 I have two sticks of 4 GB RAM, they work fine under Windows. But when I open the LXTask it says I have 7868 MB when it should show 8192 MB. Using no integrated graphics ...
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1answer
32 views

restrict memory usage to prevent swapping

I have an SSD and 8GB memory, and no swap partition. My normal use never ever needs more than 3-4GB. However from time to time I observed that some memory-leaking programs can still freeze the system ...
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Where does the kernel file dump_pagetables.c dump the data of the page tables?

I m working on a project to do memory allocation in the kernel. I would like to know how the virtual memory is allocated presently in the dump_pagetables.c file.
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79 views

ZFS - Always Out of Memory

I read that ZFS was set to use all physical memory except 1GB on systems that have 4GB or more. Since I have virtual machines running my home-server that is running the ZFS filesystem, I wanted to ...
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0answers
22 views

Get OS Process List with Volatility From a memory dump

I am wondering if anyone can help me I am trying to figure out how to get a count of the processes that were running in the OS process list using volatility from a ram dump. $python vol.py pslist -f ...
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0answers
33 views

“-/+ buffers/cache memory” is zero

i have an OpenVZ VPS with ubuntu server 14.04.2 and i can access to a SolusVM control panel. Recently, "memory usage" is always 0 KB, and only "vswap usage" shows real swap usage. if i run free -k i ...
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132 views

Could I install Ubuntu on SD card and runt it from my Chromebook?

So I just installed Ubuntu on my Chromebook. Now the main issue is that the internal memory is limited. I am thinking of using a 64 GB SD card to expend the memory. Would it run as smooth as it does ...
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Ubuntu 12.04 only recognising 2.9Gb Ram out of 4Gb

Yes it is a 32-bit installation, but there is supposed to be PAE that allows it to use all of the ram. The command: sudo lshw -class memory | grep GiB -m 1 tells me that yes there is 4Gb ...
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18 views

Prepare for a huge computational script (RAM, SWAP…)

I run lots of python scripts on my laptop, but this time the situation is tricky. I need to read dump files, and perform huge calculations, so I need a lot of RAM and space. A crude calculation ...
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1answer
22 views

How to check if there is already a swap area?

I am using Ubuntu 14.04 on my laptop with 4 GB RAM. I had chosen option to "replace Windows 8 and install Ubuntu with LVM" when installing Ubuntu. Now I wanted to create a swap partition, I executed ...
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1answer
34 views

Virtual RAM folder in Ubuntu?

I would like to have a folder mounted as temporary, which is actually my RAM. This is so that, for example, I could copy a movie into my RAM, unplug my external drive, and then watch it. Can this be ...
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1answer
35 views

Ubuntu 14.04 RAM not usable — mallocate problem

I have a strange situation where my Ubuntu server (14.04) is not recognizing all of the memory installed in my server. I have a HP Proliant DL 380 G3 server (32bit) with 10 GB memory. I couldn't use ...
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1answer
41 views

Is it possible to limit cache memory to a process?

I am using network capture tool named dumpcap and it is consuming too much cache memory. So other processes getting no memory to run. htop command shown cache memory as 29 GB in Meters. Can ...
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43 views

automate processes based on priority and memory size.

I have written a script to output vmstat etc according to user input and have also written a script for process control based on user input. the process script allows the user to use a series of menu ...
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2answers
42 views

record of swap/memory usage - how to do it?

Here is a quick intro to the problem, but if you're interested only on the question, I think you may skip to the last paragraph. I have installed Ubuntu Mate on my laptop with the recommended amount ...
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Virtualization hardware review

I'm running an home server based on Ubuntu 14.10 for running some services that I need on my LAN such as: mysql db, LAMP stack, NFS share, Squid proxy and so. My machine is built on Intel(R) ...
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568 views

How do I run memtest86+?

If I encounter a situation where I suspect my machine's RAM might be going bad, I might need to launch memtest86+ to check it. How can I do this using Ubuntu? Are there different methods for launching ...
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51 views

My laptop very slow, Is the problem with Hard Disk or RAM ( very low Timing cached reads value)

My laptop has been running very slow, I reinstalled Ubuntu and also tried Windows but didn’t find any difference. I thought this could be a problem with my HD. I tried the below tests with hdparm ...
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1answer
29 views

Real & accurate memory usage statistics (top)?

Need accurate memory usage statistics to figure out what size matrix I can work with without choking the RAM on this laptop. ;) I am using top to figure out how much memory an app I'm working on is ...
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1answer
66 views

How do I know how much RAM can I upgrade my laptop?

I have a HP Pavilion laptop quite old (2008) which I would like to increase the RAM. Ideally I would like to have 8Gb but I have no idea how to check if hardware could support this extension. These ...
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0answers
14 views

Desktop computer slowdown on heavy loads

In Linux generally, is it possible to limit cpu, ram and iops(hdd,nic..) given for processes not belonging to core operating system, including system libraries, X server, system utilities, user ...
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41 views

Why my memory is shooting to nearly 100 percent which makes my laptop unable to work?

I am a newbie. I am currently using xubuntu 14.04 on my old dell laptop (~8-9 years old). When ever i watch any video on YouTube or similar site the video is not coming properly. I am not able to do ...
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0answers
12 views

Ubuntu VM shows different RAM then what vCenter is showing

I created a 64-bit VM with 4 GB of RAM and installed Ubuntu 14.04 64-bit The command, free –g, shows a total of 3GB The details screen on the desktop shows 3.9 GB vCenter Server Performance Monitor ...
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Gluglug ThinkPad X200 Ubuntu?

I'm looking at buying the Lenovo ThinkPad X200 from Gluglug (http://shop.gluglug.org.uk/product/libreboot-x200/) and they say they have Libreboot so you can install any OS, but I'm wondering if the ...
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29 views

Wrong amount of memory show in Settings -> Details in Ubuntu 14.04 [duplicate]

I have installed 4Gb as two modules but only 2.9Gb is shown in Settings.
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0answers
47 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 ...
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35 views

Jave heap space error appearing Linux ubuntu 12.04

I'm running my program and this error appears after some time java.lang.OutOfMemoryError: Java heap space at HadoopMyapp.HistogramPair.<init>(HistogramPair.java:25) at ...
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44 views

java.lang.OutOfMemoryError: Java heap space

I'm using Hadoop in my application, but just before the program exits I get this error java.lang.OutOfMemoryError: Java heap space I already modified the mapred-site.xml and added this property to it ...
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1answer
43 views

How to free up my laptop's RAM?

I have an old DELL laptop with 2GB of RAM and Ubuntu 14.04 (64-bit) as its OS. Many times I am out of RAM and thus every thing goes very slow! I think there is many background programs (services or ...
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2answers
56 views

RAM memory size info confusion; F2 key or “System Setting”?

I am receiving two different figures for my RAM size. I have installed 2x2GB RAM and F2 key says I have 4028MB but Ubuntu System Setting "Detail" aka "About this computer" says I only have 2,9G. I ...
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2answers
191 views

Why do programs (including Xorg) close when out of RAM but Swap is near empty?

I have some swap configured and I believe activated... Filename Type Size Used Priority /dev/sda5 partition 7811068 1124912 200 ...
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1answer
38 views

Can I install 8gb of memory to full Macbook 5,1 Ubuntu install?

Seems that 8gb of memory is not stable in original Macbook 5,1 if I'm not running "Mac OS X 10.6 "Snow Leopard" or higher and have Boot ROM Version MB51.007D.B03" ...
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1answer
25 views

Theoretical question about memory usage

I'm wondering about following issue: Taken some abc console(no matter if bash,zsh or something) in some *nix system. If I start some process stuff which uses 2MB of memory and then launch second ...
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0answers
43 views

httpd process high memory utilization

My httpd process is utilizing high memory per process. My site is php coded and create on drupal as a content management system. We have a high end server with 8 cores and 16 gb RAM. my per process ...
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3answers
5k views

How to read correctly “free -m” output?

The output of free -m: total used free shared buffers cached Mem: 595 482 112 0 63 324 -/+ ...