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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What is the maximum amount of RAM that Ubuntu 32 Bit supports?

Intel Xeon E5-1620 OCed to 4.75GHZ Asus P9X79 Pro 8GB 1333 7-7-7-20(Thinking about 24GB) I am considering to install Ubuntu. Will the 32Bit version support more RAM than 4GB?
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Server slowly runs out of memory [duplicate]

My Ubuntu 10.04 server slowly eats up memory. If you look at tops, it slowly starts using swap space. Eventually the amount of free memory drops too low and the kernel kills the worst process. A ...
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1answer
624 views

My RAM and CPU's are free but my computer is so slow (Ubuntu 12.10)?

I have 8 Gb RAM and 2 CPU, I install Ubuntu 12.10 on my laptop. The system works strangely. The computer becomes slow for no reasons! I ran top and Htop and there is nothing that uses my CPU or my RAM ...
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924 views

Only 4GB RAM out of 8 shown in Ubuntu 12.04 LTS 64 bit and in BIOS

I have seen similar questions and answers but mine is: a. I have 8GB RAM installed b. My BIOS shows 4GB c. Ubuntu's System Setting/Details shows 3.7GB (but this small decrease is not a great issue ...
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1answer
94 views

100MB of RAM not detected on 64-bit 12.10 (NVIDIA cards)

My desktop's wubi install does not properly detect my NVIDIA graphics card and reports 3.9GB of RAM out of 4GB. On my netbook, which has an NVIDIA ION and 2GB RAM, Sysinfo reports 1.9GB RAM but shows ...
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5answers
819 views

How to log memory usage per minute on Ubuntu Server?

I checked few programs such as htop or top command but couldn't find any features for logging per minute. Is there a way to do that for tracking memory issues ? edit: I was using linode and decided ...
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2answers
1k views

Does Ubuntu run from a CD/DVD save data ONLY in memory?

If I create a proper LiveCD and run the OS from the disc does it save any information on a hard-drive or is it ALL saved to the PC's memory? I've looked around for a clear, direct "yes/no" answer to ...
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0answers
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Limiting physical memory of specifc process [duplicate]

Performing research, I am interested in limitting the Physical Memory per specific process. My requirements: Limit physical memory consumption for specific program In case of crossing limitation - ...
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0answers
31 views

Notebook freezes when running Chrome: how can I limit the RAM available to Chrome? [duplicate]

I run Chrome on my laptop and it randomly freezes shortly after opening a new tab. It is a rather old notebook (MSI Megabook GX600 Extreme) with a Core2Duo and 2GB RAM. It runs Ubuntu 12.10 64Bit. As ...
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How many CPU cores and RAM on VMware Player for Photoshop?

How much RAM and CPU core should I allocate for my VMware Player(Windows 7 x64 as Guest OS)? My System Specs: Ubuntu 12.10 x64 Intel i7 @ 2.20 GHz (4 cores + hyper-threading) 8GB RAM 750 HDD Intel ...
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0answers
718 views

Thunderbird hangs at startup [closed]

I am facing issues while running ThunderBird after system restart. TB is hanging while taking up 100% of memory, and CPU utilization is 100%. Which is why system does not respond after sometime. I ...
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1answer
178 views

Inexplicable Slowness [duplicate]

I've been running Ubuntu for about 4 years now, and I'm having a problem with 12.04 Every once in a while the computer will slow almost to a stop, interrupting any playing audio/video, and ...
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133 views

Will Ubuntu 12.10 64bit recognize 6gb ram on 2007 macbook pro

I have a 2007 Macbook pro running 12.10 64bit. I have read that it would support 6gb of ram even though apple only recommended 4gb at the time. I was wondering if Ubuntu would recognize it as well.
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Unsure if my RAM speed is set correctly

edit: Thank you for reopening I have an an AMD APU as my CPU/GPU (specs below) and its graphical performance benefits greatly from higher speed RAM. In my motherboard BIOS I have set the memory clock ...
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2answers
2k views

How to make ubuntu use more RAM?

After 2 weeks of trying, failing, trying again, still failing, I finally got Ubuntu stable and operational. My hard disk is quite old and slow but I have excessive RAM (16 GB 2133 mhz), so I was ...
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Secure shared memory

In my Ubuntu deployment script I have written a function to secure shared memory. For a web server it's important to secure the shared memory to tighten up security. Below you can find the code: echo ...
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797 views

Adding RAM was recognized by BIOS but not by Ubuntu

On a Motherboard that allows max 8GB RAM, 2 slots x 4, 4 of them pre-installed, I added another 4GB in the second slot; BIOS reads 8GB available, but the system info shows only 2.9 GB RAM. How can I ...
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1answer
1k views

Ubuntu installation in VirtualBox - not using base memory in RAM

I am installing Ubuntu right now under VirtualBox in Windows 7. It is going extremely slow and VirtualBox is only using about 128 MB of RAM out of the 1024 MB I set as Base memory to it. Is it ...
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3answers
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Why am I frequently getting this “Cannot allocate memory” error?

I'm using Ubuntu 12.10 with Gnome-Classic. I am getting this error frequently and with almost all programs, big and small. When I try to open them, they don't start, and instead I get an error message ...
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2answers
112 views

Swap Files slowing down games

I have a 16 GB Alienware M17X, and every time I try to play a game the game will run perfectly for a minute or so but then the game starts to lag. Now I believe this is a swap file problem. So does ...
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2answers
6k views

Chrome suddenly using too much memory, what's wrong?

I just upgraded my RAM to double what it used to have and for a couple of weeks everything was running great, but now Chrome is eating all of it, I hit 90% use with only one window and <50 tabs ...
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1k views

/can you install ubuntu to hdd but it runs completely from ram while hdd is not spinning?

my main purpose is to be able to install ubuntu to the hard disc so that my settings and everything are saved but i want it to load itself to my ram for faster operation and better battery life while ...
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1answer
760 views

Ubuntu 12.10 x64 Doesn't detect RAM properly

I have 6 GB installed, which as a 64-bit OS, it should see, but it only sees 3.5 GB! How do I remedy this? Output as requested: seann@seann:~$ dmidecode --type memory | grep -E ...
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2answers
556 views

Reccomended upgrade for Ram Ubuntu 12.04

I am running Ubuntu 12.04 32 bit on my laptop (Toshiba Sattelite L-450), the spec is as follows Memory: 2.8gb Intel® Celeron(R) CPU 900 @ 2.20GHz Graphics Mobile Intel® GM45 Express Chipset ...
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0answers
148 views

Why do I run out of memory even when nothing is running?

I am currently facing a problem that when I run Uclust, it keeps showing me mymalloc running ot of memory. The thing is that cuurently nothing is running in the system and my memory shows I am ...
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2answers
184 views

Ubuntu does not detects the RAM correctly

I have 512MB RAM in my PC. Ubuntu detects only 495 MiB. How can I fix this? On Debian Squeeze, I have 512MB.(The correct size) OS: Ubuntu 12.04 Precise Pangolin
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2answers
974 views

2 GB Ram, but Ubuntu runs slowly and hangs if doing too much

I think my system more than meets the minimum/recommended requirements for Ubuntu, but its still running slowly. Especially when I try to multitask by having 4-6 windows open, then it becomes quite ...
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1answer
44 views

Deleting files from connected devices doesn't free the device's storage

A few weeks ago, I bought my tablet and copied files from my computer running Ubuntu 12.04. Somehow, I had to delete some of these copied files to free some memory. But upon deletion from my computer, ...
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Disk cache is sometimes dropped/erased

I have a memory/cpu monitor running, and sometimes see the graph line for “cached memory” drop, for no apparent reason. Earlier today Cache memory was at about 4.8GB but then dropped in two steps ( a ...
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1answer
174 views

The limits is restored to the defaults after I reboot

I want to remove "memorylocked" and "maxproc" limits. I am using tcsh shell. I read that if I use "#limit memorylocked unlimited" and "#limit maxproc unlimited" then they will be set to unlimited. I ...
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3answers
153 views

What are the most suitable distribution Ubuntu for my computer? [duplicate]

Possible Duplicate: How do I find out which version and derivate of Ubuntu is right for my hardware in terms of minimal system requirements? I'm looking to migrate from Windows XP to Ubuntu ...
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0answers
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System Monitor disagrees with 'free -m' [duplicate]

Possible Duplicate: System monitor (panel) shows the wrong amount of used ram When I start up my computer, free -m says I have about 1800MB allocated and 150MB free. In System Monitor, it ...
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1answer
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How and why should I specify mtrr_gran_size/mtrr_chunk_size?

I noticed today that /var/log/dmesg contains several dozen lines with information about something called gran_size and *BAD*gran_size, followed by what appears to be an instruction for me: [ ...
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2answers
242 views

Sluggish desktop/Unity performance on ThinkPad Edge

Fresh (1 week old) install of Ubuntu 12.10 64 bit version on a ThinkPad Edge 15, specs as follows: System specs (site wouldn't let me hotlink the image) I think the swap is about 2GB but can't ...
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3answers
2k views

How do I know which RAM I'm using?

I want to buy some extra RAM but Hardinfo wont tell me which brand, model, latency and speed I'm currently using to buy the same kind. What else can I use?
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2answers
211 views

Not recognising 4GB of RAM

I have a pae kernel but free -m only shows 3.2 Gigs of the 4 GB that is physically installed. The BIOS shows 4 GB available. uname -a gives: 3.2.0-35-generic-pae #55-Ubuntu SMP Wed Dec 5 18:04:39 UTC ...
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1answer
376 views

Ubuntu 12.04.1 (64bit) only recognizes 7.8gb of RAM from 8gb RAM

I know that is a little diference between 7.8gb to 8gb, but still a diference, why Ubuntu dont recognizes all of my RAM? I had the same case with my 32 bit Pc, 3gb RAM and Ubuntu only recognized ...
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1answer
393 views

Warning when available RAM approaches zero

This is a follow-up to Memory limiting solutions for greedy applications that can crash OS?: ulimit and cgroups are not user friendly, and besides, wouldn't work with applications that spawn separate ...
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1answer
629 views

Getting specific 'Out of memory!' message when running very involved Perl script [closed]

I'm running a Perl script that parses information from around 7,000 HTML files. Probably not really relevant, but I'm just trying to describe that this is, well, doing a lot of stuff. I originally had ...
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1answer
577 views

java not allowing for the use of all 8gb of ram

I have a 32bit version of Ubuntu server with PAE active allow for the full use of the 8gb of RAM but I can't use more than 2gb of RAM in Java. I run the command java -Xms6G -Xmx7G -jar server.jar ...
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4k views

Optimization: RAM cleaning and monitoring

Is there any good tools for ram cleaning-purging? I mean some daemon, that watch on RAM and trying to purge some, if it reached the limit? Thanks!
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1answer
111 views

Fresh ubuntu installation - memory usage went from 3% to 41% - should I be concerned and how to remedy?

My memory usage was a 4% after a fresh ubuntu 12.10 installation after i install php packages etc using this gist, https://gist.github.com/4372049 my memory usage now reached 41%. should i be ...
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1answer
2k views

Ardour, system has a limit for maximum amount of locked memory

After installing and starting Ardour I receive the following warning message: WARNING: Your system has a limit for maximum amount of locked memory. This might cause Ardour to run out of memory ...
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1answer
89 views

Problems booting because the HDD is full. How can I get stuff off my hard drive?

I have used up all the space on my hard drive and when starting up the computer says the only option I have is to start up in basic graphics mode. On the screen it then says stopping system v runlevel ...
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1answer
28 views

Dbuses and Apaches are using up memory

I recently noticed, in System Monitor, that multiple Apache2 processes are showing up (with the same "Command Line"). There are currently 6 of them, each with 7MB memory. I also noticed a whole bunch ...
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51 views

Linux kernel: page substitution policy

I am supposed to answer for homework which algorithm is implemented in Linux for the virtual memory page substitution and also give some extracts of the code to prove that. After some research I have ...
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1answer
1k views

Average memory usage after complete ubuntu 12.04 start up

When it starts up completely, I cas see that about 400-500MB of my 2GB Ram is being used. Right now that I have only started Firefox (and System monitor), I can see that about 1GB of ram is full with ...
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3answers
4k 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 -/+ ...
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3answers
758 views

How does landscape calculate memory usage?

I'm trying to debug an OOM situation in an Ubuntu 12.04 server, and looking at the Memory graphs in Landscape, I noticed that there wasn't any serious memory usage spike. Then I looked at the output ...
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0answers
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Ubuntu 12.04 tilts when trying to open large excel file with libreoffice or matlab

I have an xlsx-file of size 27.3MB and when I try to open it either in Libreoffice or Matlab the whole system slows down My processor is AMD Sempron(tm) 140 Processor (should be about 2.7Ghz) Memory ...