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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Will adding more RAM increase my computer's performance?

I am looking to increase my computer's performance. Will upgrading my RAM by 12GB or upgrading to a 7,200 RPM Hard Drive increase my computer's performance more? I can only do one, which one will make ...
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218 views

When your web server starts paging memory to disk and slows to a crawl, what's the best way to recover?

I've been shutting down and restarting the server, but is there something short of that you can do to quickly recover from a high-paging situation?
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361 views

Execute a script when memory peaks?

I don't have a lot of memory and sometimes, when I play video games, its get full and my computer start freezing, anything I do take more than 1 minutes before getting done that include mouse move and ...
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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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1answer
2k views

How to give all available resources to VirtualBox?

Is there a way to push all available resources to the program(VirtualBox) when running Ubuntu?
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How to increase the disk space of an Ubuntu VMWare guest, without the cd?

I powered off the VM and on the VMware side increased the allocated disk space. I did this by Edit Virtual Machine Settings -> Hard Disk -> Utilities and so forth. It then warned me that I should ...
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1answer
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How to impose memory limits to a shell script?

I have a PHP script that while a folder contains XML files, it will process them onto the database. Currently, the server is running the PHP version 5.3.10 and there's a bug report about memory ...
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201 views

How to set a memory limit for a specific process?

I tried to execute mpiexec -16 ... on a 384 GB RAM server, but it induced OOM Killer and was aborted. How can I set a memory limit for mpiexec execution? I know ulimit, but it might affect other ...
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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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Does Ubuntu support 8Gb of RAM?

I've a motherboard that can accept 8G RAM, But Window only see and use 4G RAM. If I put in my 8G RAM sticks, Will installing a 64bit version of Ubuntu really access most of the 8G's, Or is this a pipe ...
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Can I save a file from RAM?

To be more specific, here's the situation. I was working on MyPaint from a blank document and, after a few hours during which I didn't save anything (of course…) the program freezed. I didn't close ...
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133 views

Light alternative for Unity clock applet (netbook)?

Default clock applet is heavy based on evolution ( I think it is provided by this package )indicator-datetime. For this reason, on on Ubu 14.04, it is sucking about 30mb of ram ( as for htop info ) ...
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716 views

Which processes with daemon are unnecessary?

I saw 3 processes which have "daemon.py" at the end of them and use 10 MB of memory each of them. What do they make? Also there are a lot of processes which have daemon inside. Are they really ...
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Used memory in Linux? [duplicate]

Possible Duplicate: How can I monitor the memory usage? I see in System Monitor, used memory only 332MB, so free memory is ~3.4GB, but when I use command line: free -m, used memory is 1GB, ...
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2answers
829 views

Does seeding torrents affect the harddisk RAM caching?

I've downloaded a lot of torrent files and while I'm seeding them, I've noticed that very often when I start the browser it's slow and the hard disk activity indicator is on. Usually when I start a ...
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1answer
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zeitgeist-daemon excessive RAM usage

I have installed last week Ubuntu 11.04 64 on a new machine. I am running the GUI using Unity. However I have noticed that after 1-2 hours the process zeitgeist-daemon starts using excessively the ...
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what is the nm-applet and why does it take so much memory?

I was wondering why my memory useage was so high, what is this thing that take a whopping 1.2GB of memory. Please and thank you.
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Can I use all my RAM for application data?

I have yet another question about "where is my Linux memory" Question goes: can I use cache for application data? On my laptop I have 1GB ram. Situation after some time of work: browser takes 400MB ...
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569 views

Physically check ram without rebooting the server?

I have a production Ubuntu server in a remote location, which recently started to behave strangely. I suspect RAM errors, and want to have a physical RAM check without rebooting, Live CDs or ...
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I had 2G of RAM and I upgraded to 6G and it only sees 3G

I did some searching, and I have a processor that supports pae. It is red when I run cat /proc/cpuinfo | grep pae I do have the 64 bit server version installed, however, I'm using a desktop. (That is ...
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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
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Ubuntu 12.10 and VMware Workstation 9: RAM caching causes severe performance drops

I have read plenty of threads on memory caching and the standard response of "large cache is good, it shouldn't effect performance", "the kernel knows best". I have recently upgraded from 12.04 to ...
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250 views

Where is my ram?

I have 2GB installed on my machine running Ubuntu 12.04. After some time of use, I see much of my RAM used. The RAM does not free enough even though I closed all my programs. I included 2 ...
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709 views

Will Kubuntu run on 256 MB Ram?

For two weeks, I have been trying to install Kubuntu 12.04.1 onto a Kingston USB stick to run on my Acer Aspire 1362 Laptop, which has 256MB RAM. Firstly I downloaded: ...
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How do I tune WordPress to make my site more responsive?

I have a Linode that has Ubuntu loaded and am hosting a WordPress site. I would like to optimize my site so that I no longer get Out of Memory errors like the following: Killed process 16660 ...
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185 views

Shutter is using big memory

I included Shutter on my Startup Applications list upon installing the app. For the second time in two days, my laptop would suddenly freeze heavily for a few seconds that I can't even move the mouse ...
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75 views

How I can auto end specific process?

How can I auto end a specific process when it reaches 400 MB RAM? And how do I change it back after I do that ? Is there any program or script or anything ?!
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Compiz Memory leak [closed]

After sluggish performance and freezing for two weeks I finally managed to nail down the culprit to Compiz, I found out it's vital to Unity and is basically an OpenGL wrapper for Ubuntu and Xorg. How ...
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Which is correct for VirtualBox memory usage: Windows Task Manager or System Monitor?

I have configured my Ubuntu VirtualBox install to have a base memory setting of 512MB. When running this install, its fairly sluggish in a way that feels like its thrashing memory. In other words, ...
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chromium build fails due to `out of memory` allocation

i am trying to build chromium content_shell. But it fails at the last linking stage because of out of memory. Error Log: [1/1] LINK content_shell ... /usr/bin/ld: out of memory allocating ...
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lshw not showing individual memory bank info

This is all I get: sudo lshw -C memory *-memory description: System memory physical id: 0 size: 7981MiB sudo lshw doesn't give any more info. lshw used to ...
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1answer
114 views

Disable memory cache - real reason

OK, before you mark my thread a duplicate I want to say, that I know this very good answer: How do I clean or disable the memory cache? But this is not case for me. I am making some performance tests ...
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Ubuntu 13.10 freezes at times; *ERROR* stuck on render ring

My ubuntu 13.10 laptop freezes relatively frequently, after I recently installed it. It is most common while I am playing Minecraft, but I have also had it happen at other times. I think it may be a ...
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Combining two laptops to increase memory

I have two laptops with the following specs and I want to connect them to increase memory so that I can increase the performance of the scientific calculations that I need to do at home. HP Pavilion ...
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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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479 views

How much swap do I really need? [duplicate]

Possible Duplicate: I have 16GB RAM. Do I need 32GB swap? I have a 4 GB RAM and 300 GB HDD with 8 GB of it as a Swap partition. I'm running 12.04 with hibernate enabled. How much swap do I ...
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Lenovo T60P with 4GB of RAM, Ubuntu 11.04 and 11.10 only see 3GB

I have a Lenovo ThinkPad T60P with 4GB of memory (BIOS sees all 4GB RAM). I have installed Ubuntu 11.04 and 11.10 and both are only recognizing 3GB RAM. Please advise. Thanks. Updates Used 32bit ...
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3answers
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Why does my system use so much cache?

Previously, on my desktop computer running Ubuntu 14.04, I had 4GB RAM, which I thought should be plenty. However, after being on for a while, my computer would seem to get slow. I have a system ...
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2answers
2k views

Is there a command that frees up RAM?

I was wondering if there is a command that frees up cached RAM I often have 1GB cached RAM when I only have 1.7GB of RAM, and when I start an application like Minecraft (uses a lot of RAM) and the ...
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2answers
403 views

What is memcached? Is it good for gaming or virtual machines?

This is a performance question: My machine always runs Ubuntu as the main, and as I login, it always starts up a Windows VM and firefox? If I install memcached, will it improve my performance? I ...
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How to check for errors in RAM via linux?

I have ubuntu 11 running off a 3.6gb usb flash/stick drive. System has 4gb ram and blank harddisk (wiped using DBAN tool). How do i check if there are no errors in my RAM ? Is there a guaranteed way ...
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2answers
174 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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1answer
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How much memory does Ubuntu need? [duplicate]

Possible Duplicate: What are the minimum system requirements for 12.04 LTS? How much memory do I need for Ubuntu? I mean everything that is taking memory space after I finished installing ...
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3answers
256 views

Why isn't my SWAP cleared after usage?

When I use a lot of RAM (90-100%) then the laptop normally starts using SWAP so if I look in htop during that intense usage I see it's using 200MB of SWAP. But when I stop using the laptop (the ...
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3answers
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System Monitor and top reporting wildly different memory usage

Lately, while browsing, I often get that the computer comes to a crawl. At the same time I notice memory consumptions of close to 90% by programs/ 10% as cache as indicated by the System Monitor ...
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1answer
75 views

Where is everything saved when I “try Ubuntu without installing?”

The reason I ask is because I ran out of space each time Steam tried to unpack, and none of my drives or devices are full.
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548 views

Why is only 3.2GBs out of 5 showing up?

I have 64Bit Ubuntu installed, and a MSI Graphics card. Any ideas on why this might be happening?
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379 views

How to automatically restart an application for using too much RAM or CPU

I'm going to be running an Ubuntu 14.04 LTS server that will have a few Garry's Mod (Half-life 2/Source based) servers running on it. I don't want any one of those servers getting out of line by ...
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Is Ubuntu 32-bit only for systems with “less than 2GB RAM”?

On the downloads page, you have the following two options: 64-bit 32-bit (for machines with less than 2GB RAM) Assuming you have a 32-bit machine with the maximum 4GB of RAM, will Ubuntu ...
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1answer
543 views

typed `apt-get update` now showing a long list of EDAC errors. Is there anything wrong?

I typed apt-get update and then I saw a long list of EDAC i7Core: Lost 127 memory errors Please help me understand what has happened. I am using ubuntu server edition 12.04 LTS UPDATE: I ...