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 12.04 32bit System Fails Memory Testing

Results: "FAILED Meminfo total: 3097452 kB DMI total: 4096000 kB Accuracy: 75.00 Memory totals not close enough" I recently had some more RAM installed: I had 1GB. I added 2GB, giving a total of ...
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117 views

unity-music-daemon uses large amount of memory

When I boot my Ubuntu 13.04 up, I noticed that my fans goes crazy and when I had a glanced at System Monitor, I saw that a process called unity-music-daemon is using a large amount of memory and CPU. ...
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58 views

How to persistently limit resources of a program

I am running several programs on my computer and under normal circumstances my RAM (2GB) and CPU power is sufficient. However it occurs that a single program suddenly turns the system permanently ...
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469 views

How to Memory-Test Chrubuntu

My computer recently crashed, without apparent provocation, as part of what I think was a graphics bug of some sort. Because I have no reason to believe that there was an obvious proximate cause, the ...
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2answers
45 views

which memory upgrade is best?

Running Ubuntu 12.04 64 bit on a machine with ASUS M2N-e board, I sometimes receive buffer lockups when watching YouTube. I have (two) 1 GB sticks of PC2-5300 667 MHz of DDR2 RAM (Kingston) installed. ...
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112 views

Monitor memory usage of MDADM RAID5 on ubuntu 12.04

How can I monitor in real-time the memory usage of MDADM RAID5? Whenever I'm doing something IO exhaustive I can see the RAID process in System Monitor bumping up the CPU usage but memory is never ...
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1answer
312 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 ...
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67 views

machine is very slow

I'm using Ubuntu 12.04 and now its getting very slow in process some thing, it takes a long time to do something, I don't know what or why. I've attached the htop result here. It takes pretty much ...
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1answer
63 views

How to install Ubuntu as the Default OS in a PC

My problem is that I want to install Ubuntu as the default Operating System but I want to format my computer (here comes the problem) I cannot enter the systems that I had before: Windows 8 Windows ...
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1answer
123 views

How to detect RAM that was added after Ubuntu installation?

While I installed ubuntu 12.04 (64 bit) on my system, I attached 2gb ram to only one slot. Now, after weeks I've attached another 2gb ram to another slot. Ubuntu does not detect 4gb of memory in ...
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216 views

gvfsd-gphoto2 memory leak in Ubuntu 13.04

I'm running Ubuntu 13.04 x64 on my laptop and often (maybe once an hour) it gets so slow and laggy that I can barely move the mouse. After checking system monitor, I've found that in these situations ...
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2answers
342 views

RAM doubled from 8 gb to 16 gb, now ubuntu 13.04 is SO SLOW!

I upgraded my RAM amount from 8 GB to 16 GB tonight. After the upgrade Ubuntu takes forever to boot and doing anything on the OS is hideously slow now. You can click on a menu and it will take ...
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43 views

Mysterious Laptop Problems

I have been an ubuntu user for a little over a year now, I love it. My problem is that my laptop, Lenovo G560 pentium 2.0ghz 4gb ram, is randomly slowing and closing programs (Ubuntu has encountered ...
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1answer
723 views

What Does Cached Memory Mean when Viewing htop?

While viewing the reports of htop, I would like to know what the orange/brown 'cached memory' bars actually indicate. Really I'm looking for a more practical explanation of what I'm looking at, rather ...
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1answer
242 views

Only 3GB of RAM with PAE kernel on 12.04

I've installed 4GB RAM on my Thinkpad X60 running Ubuntu 12.04. Then I've installed PAE-enabled kernel. Now uname -r outputs 3.2.0-50-generic-pae My CPU is capable of PAE: $ grep pae /proc/cpuinfo ...
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1answer
126 views

Tons of Processes Running

I have an Ubuntu 13.04 running on a P4 computer with 1 Gb of RAM (I know, I need to get a new one). I recently have been getting crashes, and a lot of my memory is being used. So I looked in Top and ...
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2answers
52 views

Ubuntu memmory consumption problem [duplicate]

Ubuntu Gnome on my laptop boot up using about 310 MB Ram. When running couples of program, the system takes 700 to 900 MB. Then, I close all programs, Ram usage drops but it keeps at 450 ~ 600 MB Ram. ...
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1answer
162 views

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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1answer
136 views

/var directory and redis

In terms of the filesystem hierarchy standard, the /var directory contains variable files — files whose content is expected to continually change during normal operation of the system— such as logs, ...
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1answer
73 views

get the resident memory of indivdual threads of a process using bash shell

If I want to find the resident memory a process uses, I might use something like "ps aux | grep apache2" or "sudo pmap -d 1130". However, I have one process that has 25 threads, and I would like to ...
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2answers
1k views

How much ram is being used on my laptop?

I have 3987MB of RAM on my laptop. Task (System) Manager says that I am using 700MB of this RAM, whilst the command "free -m" says I am using nearly 1500MB. Which one is correct and why do they show ...
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1answer
50 views

Edit Ubuntu Details?

Long story short, I need to make it look like my computer has 2GB of Ram, instead of 4GB. Is there a way I can edit a file or something, to make it change in the System Details?
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1answer
71 views

Will my server reboot itself if the memory fills up?

I just got a VDS, all said and done with my website, forums and email server set up along with my Teamspeak server. My memory usage is at 60% when it boots and grows to 70% after about 3 hours of ...
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1answer
207 views

Task Manager Memory Usage Does Not Agree with “top” command Memory Usage

I just installed lubuntu 12.04 and have been monitoring memory usage with the "top" command and the task manager GUI. I'm currently seeing 448 MB of physical RAM used with "top". However, task ...
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11 views

How to manipulate the threshold(s) that memory swapping (paging) occurs? [duplicate]

I'm trying to do something that seems counter-intuitive, but I hope will make sense by the time I'm finished with the question. I have a hosted VPS that's running 64-bit Ubuntu 12.04. The VPS comes ...
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1answer
228 views

HUD is eating my RAM

I'm running 13.04 64bit on a Dell Latitude with 8GB RAM. Recently, the HUD search results are being sorted differently, I suppose that's due to Unity updates. What's worse is that my system is ...
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194 views

Trying to undo some commands

I have done the following commands trying to make Ubuntu work faster: echo 100 > /proc/sys/vm/overcommit_ratio echo 2 > /proc/sys/vm/overcommit_memory #/etc/sysctl.conf прописываем: ...
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757 views

Comparing Virtual Memory Size with Resident Size

I came across this stackoverflow post: http://stackoverflow.com/questions/10400751/how-do-vmrss-and-resident-set-size-match The answer voted correctly states the following: "So, VSS should be ...
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1answer
1k views

64bit Ubuntu 13.04 not recognizing additional 4GB RAM

OS Info sysadmin@linux01:~$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=13.04 DISTRIB_CODENAME=raring DISTRIB_DESCRIPTION="Ubuntu 13.04" sysadmin@linux01:~$ uname -a Linux linux01 ...
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1answer
261 views

Relation of swappines and zram

I have been interested in zram so I tried to test it. But as I continue to read the guide on what and how to install it, I have realized that it creates a file /dev/zram0 and mounts it as a swap, I ...
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3answers
516 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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319 views

My computer has originally 1,5 GB of RAM but K-X-L-Ubuntu, Debian ect… give me less than 463 MB

Why is that? When I was running Windows XP on my computer, I had 1,5 GB of RAM. I have two questions: Why is that? Can I get my 1,5 GB of RAM or Ubuntu considers that 1,5 GB on Windows is 500 MB in ...
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1answer
88 views

How to re-encrypt my swap to activate it again?

A while back I was messing with my swap space, turning it on and off using sudo swapon -a and sudo swapoff -a. Since I generally have enough RAM anyway (6GB) I totally forgot about it. Currently I am ...
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1answer
98 views

htop showing duplicate applications with very odd bizarre results upwards of 20,30,40 or more, see screen grab

I have attached screen shots of htop and it's bizarre results. Can anyone explain what is happening here? It shows this new copy.com app taking up like 500% of my memory if you count it up.
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1answer
239 views

Wheres my memory going?

My machine keeps 'freezing' before eventaully logging out with all the programs exiting. This is rather annoying, and I think its because I keep running out of memory. I am not running any custom ...
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0answers
72 views

Load filesystem into memory to remove Live media, _after_ boot

I know there are various ways to load a Live medium into RAM at boot, such as with the toram boot parameter, but these methods add about a minute onto the boot time for flash media, and don't increase ...
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1answer
446 views

can my 2 GB sd card be used as ram like in windows 7? [duplicate]

I'm trying to increase the ram on my old computer with a 2 GB sd card. You can configure Windows to use an SD card like RAM and I'm wondering if Ubuntu has that same ability.
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25 views

I can‘t start ubuntu

MemoryA 2G: win7 32bit normal startup; ubuntu 64bit normal start; MemoryB 2G: win7 32bit normal startup; ubuntu 64bit normal start; MemoryA + MemoryB: win7 32bit normal startup; ubuntu 64bit does not ...
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156 views

(SOLVED) Huge loss of memory from USB boot. Any help? [duplicate]

I have successfully installed Ubuntu 13 on my laptop using an 4Gb USB drive with a bootable .ISO However I went to try and format the USB on my desktop(Windows 7 :( ) and now it only has 700Mb Is ...
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1answer
90 views

Mem vs cache in system monitor?

In the above menu, what does the difference between Mem and cache? Are they both use memory from my RAM? Which program use cache?
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1answer
601 views

How to check what type my video card is and its memory size?

I need to install some programs that require minimal size of video card memory, how do I get the size and possibly what vendor and type of my video card? Output of lspci | grep VGA | cut -d " " -f ...
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85 views

ramdisk, dedup,compressed,

I'm looking to create a ramdisk of 32GB at boot time that can do compression and deduplication in real time. This area will contain a fair amount of data of which 25-50% maybe duplicated, hence the ...
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385 views

How Much Ram Does Ubuntu Need To Run

Well i have an old eMac and i wanted to replace the operating system with Ubuntu but I don"t want to break it.
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1answer
163 views

is dmidecode's max memory report is accurate?

After googling for a while I've found "sudo dmidecode -t 16,17" to check max amount of memory in my laptops. Based on its report my HP Pavilion g4-1002tu laptop can accept a max of 16GB, while the HP ...
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0answers
49 views

Higher CPU consumption after replacing RAM with 2 RAMs

I replaced my 2GB RAM (PC3-10800) with 2 2GB RAMs (PC3-8500) and my CPU consumption is higher, pc is often slower and laggy. I experienced this problem on Ubuntu 12.04 and Ubuntu 13.04 (32-bit). ...
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558 views

How could I boot my installation of Ubuntu 13.04 in ram?

Just like in the live cd using squashfs of the system. I think that it could boost the general speed of the whole os by putting it on the ram. This wiki is outdated, maybe: ...
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1answer
1k views

How to troubleshoot high cpu problems related to postgres and postmaster service?

I'm using an open source(RHCE 6.2) based machine running SIEM software , when i do the top command i see postgress postmaster both eating 96% of cpu usage? Is there a way to pin-point or see ...
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1answer
4k views

how to get graphics card memory info? windows and linux shows different value

In my Windows 8, video card shows 640 MB of available memory (Screen Resolution > Advanced Settings or with dxdiag). But ubuntu (with lspci command) shows 256 MB. so who's right?
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89 views

Viewing page tables in filesystem

I know that the page table is managed by the linux kernel, though I am not sure if it is available on the filesystem. I'd like to view information about page tables from the command line. As ...
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65 views

New Fonts breaking Wine

I'm running Photoshop CS2 in Wine because, well I'm not a fan of the gimp sorry. It's been perfectly stable up until today when I installed a couple of new fonts and now it is running out of memory ...