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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Why is find running here?

I noticed very high IOwait, even copying/pasting from NetBeans to Firefox was taking several minutes and hanging for a long while. In powertop, I noticed: Usage Events/s Category ...
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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
1k views

How do I use/enable zcache?

I'd like to try out zcache but I just can't figure out how I would enable it, do I have to compile a new kernel with zcache enabled? I'm running Ubuntu 13.04 64bit
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0answers
1k views

Is there a default limit to the amount of memory a process may use?

Running 64-bit Matlab 7.12 on a 64-bit 10.04 Ubuntu Server. When I try run a big problem that should need 46GB of memory (the server has 72GB of Memory and plenty of swap space), the experimental ...
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1answer
260 views

Ubuntu Compatibility

I'm in the process of building a computer for a customer who has requested Ubuntu 13.04 to be installed could someone tell me if the following components are compatible. CPU: Pentium G2020 ...
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1answer
80 views

New computer installation problems

I've just bought a new desktop computer: Gigabyte 970A-DS3 NVIDIA GeForce GTX 650 AMD FX8350 RAM: 16 Gb I'd like to install 13.04 64-bit, but when I try to install, mouse doesn't work at all ...
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0answers
1k views

Ubuntu 12.4 on 3.4.45 kernel: Can't access USB memory stick

I installed kernel version 3.4.45 [LTS] on ubuntu 12.4 on a Acer laptop. With this configuration, the USB memory drives can't be accessed, some details are follows. Upon inserting the USB drive dmesg ...
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1answer
282 views

Memory allocation of C++ in Ubuntu

First of all, I'm sorry if the question doesn't belong here. I want to make sure whether this issue has to do something with my Ubuntu. The C++ code below makes 2621440 integer variables. Each ...
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5answers
10k views

Ubuntu 13.04 ram and CPU maximum support? [closed]

I'm learning about ubuntu, but I do not know the ubuntu 13.04 Ram and CPU support up to how much??? hope you help me
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2answers
250 views

Is there anything I should know before changing out my ram sticks? Ubuntu 13.04

Okay 1st off let me start by saying I have only been using Ubuntu..or Linux in general for about 3 months but in an effort to get the most out of my old tower I have decided to upgrade my ram ..I have ...
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1answer
252 views

RAM slot free or not

This question might not be so relevant here, but I want to know if there is some command tool that gives me the currently available RAM slots in my machine, also if any of them is free, and ...
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1answer
893 views

How to launch google-chrome with custom parameters by default?

I want to launch chrome and chromium from the unity launcher with the --purge-memory-button option. For chromium I was able to add the above parameter to /etc/chromium-browser/default but that's not ...
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1answer
152 views

Is this Ram usage normal?

My system is Ubuntu 13.04 64 bit + Unity and it uses ~600mb with no other processes-apps open and with preload 900mb, just the core system. Is this the expected amount? It seems a bit steep to me but ...
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2answers
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How can I measure how much RAM has been used by a command

I'm trying to measure the memory of a process that I call via the command line (i.e., I want to find out much RAM it takes to for the process ). Is there any command that I can add to the command ...
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1answer
260 views

ux31a freezes when running out of memory

I have difficulties to understand swap policy. I have installed system (ubuntu 13.04 but 12.10 had same issue) with 4gb of swap partition because ux31a has 4 gb of memory. Problem is that every time ...
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2answers
805 views

How do I change how much disk space Ubuntu has?

I installed ChruBuntu on my Chomebook Acer C7 about 2 weeks ago and I chose to allocate 10 gigs. I didn't know that that would be my amount of disk space I would be allowed to use. I want to install ...
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1answer
86 views

Available RAM not being used

I am running a program that takes a significant amount of time to complete. According to my system monitor, only 20% of the available memory is being used (1.6GiB out of 7.7GiB available). I'm ...
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2answers
113 views

Ubuntu stores variables in the wrong order

So I had this exercise in my class where I had to tell which of the two addresses is bigger when I create two char's in a main function. Because local variables are stored in the stack that starts ...
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1answer
501 views

Do I have to uninstall NVIDIA drivers before replacing with an AMD GPU?

Here is the setup: Old Intel motherboard (DG33FB) with PCI-X 1.0 2 GB DDR2 system memory 580 W PSU Intel Core 2 Quad 2.4 GHz Here are the observations*: I had thought there was no POST or BIOS ...
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0answers
18 views

Graphics card only show 256mb insted of 512mb [duplicate]

I have a HD5450 with 512mb. But lubunto only show that it has 256mb memory. How can I correct this? lubuntu 12.04
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1answer
179 views

The system freezes sometimes/randomly, when I browse a HTML5/CSS3 website in Chrome

My laptop has Intel B960 (2.2GHz x 2) with 4 GB RAM. OS is Ubuntu 12.04 with all updates to current date. I am getting a peculiar issue since about 2 weeks - when I browse a HTML5/CSS3 website in ...
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0answers
24 views

Running Ubuntu in USB but with a lot of RAM; how to run program from RAM? [duplicate]

I installed Ubuntu on a usb drive and run it with my laptop, which has over 10GB of ram. The system is rather slow. I would want to run some major programs like Chrome directly from RAM instead of the ...
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2answers
1k views

Need application/script alerting when system memory is running out [duplicate]

I don't won't to use swap file (due to some bug in kernel or AMD driver). I wan't to have some util running and monitoring free system memory and alerting me when it becomes less than some specified ...
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2answers
3k views

Customizing Ubuntu to run from RAM only, within GRUB options

I'm interested in exactly this up, now let me explain what would like to do with this. I'm preparing to buy 32GB of RAM and already have Quad Core. My idea is to implement another option in GRUB that ...
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1answer
8k views

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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0answers
32 views

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
678 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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1answer
974 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
96 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
957 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
18 views

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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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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1answer
4k views

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
778 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
179 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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1answer
134 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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1answer
1k views

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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2answers
1k views

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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2answers
854 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
38k views

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
116 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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1answer
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/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
772 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
560 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
154 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 ...
2
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2answers
189 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