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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Can be instaled more than 32 GB RAM on Ubuntu 10.04 64 bit XEN VM? [on hold]

Does Ubuntu lucid support more than 32 GB of ram? I have a XEN server running a PV guest. I upgraded from 32 to 64 GB RAM. The domain0 (host) sees all the RAM and starts the domainU (guest) with all ...
1
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1answer
14 views

Ubuntu Live CD/USB - Available Space

I recently used a Live CD to resolve a file access issue on a .7z archive. I am a new Linux user and initially concluded that I could not install p7-Zip (or other software) in a live session. I later ...
0
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1answer
26 views

Ubuntu system Does not see ram

I am running ubuntu 14.04 and just installed 2GB of ram in addition to the 4GB I already have. However when I look under about computer it show me only having 2.7 . when I run "sudo lshw -class ...
0
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1answer
28 views

Why doesn't my machine tell me it's memory type?

I wanted to see my memory type information (ex: DDR2, DDR3, DDR4) with the commands below, but it doesn't say. What's the reason? Is there a way I can know? $ sudo lshw -short -C memory ...
0
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1answer
13 views

Boot stuck at IRQ 22

I'm running Ubuntu 14 on a Macbook any my system froze so I performed a hard reboot. However when it came back up, it shows me the grub menu but no matter which kernel I pick the boot freezes with the ...
0
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0answers
16 views

Why my system is not showing me the updated amount of RAM?

Before my laptop was running with 2GB RAM; I've installed new 2GB RAM. But system is still showing RAM an amount of 2GB instead of 4GB.
11
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3answers
44k 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 ...
0
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1answer
22 views

Help me to interpret my memtest+ result and guide me what to do next

I have previously installed and enjoyed Ubuntu and had both 12.04 and 14.04 but I uninstall both of them and installed 14.04 LTS and it was a disaster for me. Could open my PC anymore due to many ...
1
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2answers
59 views

Increase processor utilisation of one application/program

I use ClustalX to align few unusually big sequences on my home desktop, this takes more than a week to complete and runs well below the maximum capacity of the machine. The top | grep clustalx gives ...
0
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3answers
369 views

Why does 15.04 freeze?

The issues are listed in this link, but I'll relist/summarize here: Ubuntu 15.04 is locking up on me, primarily when watching internet videos or listening to Slacker Radio. I have Ubuntu installed on ...
1
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1answer
23 views

Can I freeze an application to run it at a later time?

Though it might seem silly, I want to freeze an application that I can not save my progress in (specifically games where I have to play a full level, and time is short sometimes but I still would love ...
1
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3answers
48 views

Speeding up ubuntu machine [closed]

Does below command improved performance of the machine: sudo sync && echo 3 | sudo tee /proc/sys/vm/drop_caches I know this is for freeing RAM. Please guide
0
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1answer
49 views

ram usage is too high after update of fglrx driver

yesterday when i update my computer it asked new version of fglrx driver available to use? so i choose new version. after i notified my ram usage is too high so my computer is too slow and stuck for a ...
1
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1answer
19 views

why does free command show more memory usage than other tools [duplicate]

When I use free -h -l command I see 1.8G in use where system monitor app shows me 1.1G in use. total used free shared buffers cached Mem: 1.8G 1.7G ...
2
votes
2answers
247 views

Ubuntu won't boot with over 4gb ram

When booting Ubuntu 14.04 server LTS with more than 4gb Ram the computer displays a black screen. I have an Asrock D1800B-ITX motherboard. The processor is an Intel Celeron J1800 (64 bit processor) it ...
0
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0answers
31 views

Too much hard drive operations, memory management problem, probably

This may be a vague question but I hope to get your feedback. If I am correct that when memory is full, OS starts paging or swapping to use parts of the hard drive. My hard drive is always operating ...
6
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2answers
3k views

Why runs evolution-calendar-factory?

Why runs evolution-calendar-factory? Here are some processes (created with ps aux --forest) lightdm \_ /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch \_ lightdm ...
0
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1answer
44 views

How much RAM I can upgrade my netbook? [closed]

I have a old netbook acer aspire one ZG5 which has 512MB DDR2 fixed on the mother board and one slot for second device of RAM which I suppose the max amount of ram added is 1GB! Can I upgrade this ...
0
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1answer
29 views

0 byte memory left after update

since a few weeks, I faced the same problem several times. All of a sudden, I get a system message like "0 bytes memory left on hard drive". Naturally, programs stop working normally and I can't save ...
0
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0answers
35 views

Running Heroes of the Storm on Wine

I installed heroes of the storm and changed it to the 32-bit client (like it says to do on wineHQ), but everytime I run it, the screen becomes completely red, and if I do anything it crashes and says ...
0
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0answers
40 views

Ubuntu 15.04 does not recognize all my ram

I am running Ubuntu 15.04 and in the system monitor it tells me I have 7.8 GB of ram, but I have 16GB installed. My graphics card only uses 2GB, so where is the rest? MemTotal: 8157900 kB ...
0
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0answers
62 views

How to install Ubuntu on mac via usb drive without erasing anything on the mac

I want to install Ubuntu 15.04 on my mom's iMac. I'm new to these things and I don't want to erase anything on her computer, as she has many files and pictures. I installed the "preview" I guess i ...
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0answers
24 views

Can I Install RAM Wipe Feature at shutdown/reboot of Backbox in Ubuntu 14.04

We decided to use Ubuntu 14.04 in Full Disk Encryption along with the Nuke crypt setup patch released for Kali-Linux as an extra layer of security but I would like to know that is it possible to ...
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0answers
36 views

Extremely slow OS. Swap related?

I really hope you can help me. An inexperienced sysadmin, installed Ubuntu on a new Dell Desktop, it's a pretty powerful machine, and I ran a bunch of hardware tests, and can confirm that RAM/HDD and ...
1
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2answers
48 views

What do these numbers mean in syslog?

I'm trying to determine why MySQL server process is being killed due to out of memory, so am looking at the sylog. Immediately before the 'out of memory' I see lots of lines with differing numbers but ...
1
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1answer
36 views

Record RAM usage during runtime of a Java Application

I want to evaluate how some code transformations change the RAM usage of a Java Application. Is there a possibility to log the average RAM usage or the highest peak of the RAM usage in the shell ...
0
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0answers
18 views

after system update 4GB RAM decreased to 2.5GB (Ubuntu 14.04 x64)

after update ubuntu about a month ago, the amount of available memory dropped to 2.5 GB. Bios sees normal 4GB, before upgrade Ubuntu also saw 4GB the same problem: 4GB RAM installed, Ubuntu shows ...
0
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0answers
16 views

VRAM usage from DE

I'm using NVIDIA GT 705 /1gbDD3.64bit.48CudaCores/, Ubuntu 14.04 with Gnome 3. While playing Heroes of the Storm VRAM usage is going up to 945 so here is the question: Will it makes difference if i ...
1
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1answer
47 views

Ubuntu 14.04.1 is consuming 7.8 gigs of 8 gigs ram?

Actually had to create a new account due to openid 2.0 obsolete....I havent been on Askubuntu in quite awhile but tonight I was doing some work on a website when noticing my computer for once was ...
1
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1answer
30 views

How to specify the memory size in ubuntu in GB?

I am trying to know what is the memory size in GB in a Ubuntu server. What do these values mean? >> free -to total used free shared buffers cached Mem: ...
0
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1answer
55 views

Maximum RAM for my Ubuntu and laptop? [duplicate]

My laptop is Thinkpad T400, and running 64 bit Ubuntu 14.04. I wonder if there is no limit of the RAM size that I can use in my laptop? Now I am running Windows 8.1 in VirtualBox, which takes 2GB ...
0
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0answers
20 views

Prevent page cache above certain RAM usage level

Someone here on AskUbuntu pointed out that disk caching is harmless thing, that only makes your disc read times faster. And that it is birds singing and flowers only. I kinda have to disagree: I ...
0
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2answers
27 views

conky RAM usage - does not show large file in ram disk (tmpfs)

My conkyrc file contains the following: ${color grey}RAM Usage:$color $mem/ $memmax - $memperc% ${membar 4} This shows RAM usage numerical values and a bar, for example "1.01GiB/ 7.79GiB - 13% ...
0
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2answers
593 views

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 ...
0
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0answers
70 views

How to find swap usage per process when conventional methods fail? (15.04)

I'm having some difficulty determining what is using my swap space on Ubuntu 15.04. Even though I've set vm.swappiness to 1 and have more than 1/2 of my 16GB of RAM free (or at least unoccupied by a ...
0
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0answers
44 views

vmware workstation on ubuntu 14.04 do not use ram and swap don disk

i have a strange problem, just get new notebook, moved disk from old notebook. new pc have intel i7 with 8gb ram, ubuntu 14.04 64 bit on board (previous was 3gb ram). i'm using vmware workstation ...
0
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0answers
42 views

How to get Ubuntu to run off a usb stick on RAM?

It's easy to put the iso on a usb stick to either install on a hard drive or 'try' it out. But just trying the latest distro even running on a usb3 stick takes forever to test run. And once there, you ...
1
vote
1answer
40 views

High RAM usage.

watch -n 5 free -mprovides me with: Total: 7934 Free:6233 However, my system monitor says I'm using 50-60% just while running Chrome and Spotify? To me it seems a tad high. I'm on a desktop PC, ...
2
votes
0answers
167 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 ...
14
votes
2answers
4k 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 ...
21
votes
4answers
18k views

How to find the frequency and type of my current RAM?

How shall I find out the frequency and type of my current RAM? My OS is Ubuntu 12.04.
11
votes
2answers
71k views

How much memory (RAM) should I allocate to the Virtual Machine?

I'm installing Ubuntu in a Virtual Box; my host OS is Windows 7, and I have 6GB of RAM on my system. One tutorial on setting up Ubuntu on a virtual machine (this one, on step 14: ...
0
votes
0answers
126 views

enabling swapping cripples system

I am having a strange issue. Essentially, when swapping is enabled (on a swap partition), the system becomes unusably slow even at times when no swapping is in fact occurring. For example, when ...
7
votes
4answers
5k views

Why is more than 3GB of RAM not recognised when using amd64?

Why does Ubuntu 10.10 amd64 not addresses more of 3GB ram? Please if somebody knows about that, tell me the solution. My machine is a Toshiba P205-S6287 Intel centrino duo 64 bits procesor and 4GB ...
0
votes
1answer
84 views

Ubuntu 14.04 too slow and laggy!

I have Lenovo Ideapad y510p and have dual boot Ubuntu 14.04 with Windows 8.1 and I uses Ubuntu for all my work specially for developing Android apps, I have 8GB of RAM and 9GB for swap, but it's so ...
0
votes
1answer
121 views

8GB RAM installed, free only shows 4GB

I've installed 8GB of RAM (2x4GB) in my computer. Before I have only 4GB (1x4GB), and I've installed the new cards one where the oldest was and the other in the other slot of the same type. But if I ...
0
votes
0answers
165 views

Unable to find an initial ram disk that I know how to handle

After upgrading to the next linux image, aptitude has outputted the following lines: Setting up linux-image-3.16.0-38-generic (3.16.0-38.52~14.04.1) ... Running depmod. update-initramfs: deferring ...
8
votes
3answers
15k views

For a 32-bit kernel, what are the pros/cons of PAE vs. non-PAE?

I am using Ubuntu 12.04 32-bit. My kernels are PAE kernels. I know these are the kernels we can use for 32-bit OS which have 4 GB RAM, to utilize all 4GB of RAM. My system is a 32-bit system. So I ...
9
votes
5answers
72k views

MicroSD card is set to Read-only state. How can I write data on it?

I have a MicroSD card reader in my notebook. When I insert a MicroSD memory card into it, I can't write any data on it - it's read-only. The same thing happens when I try to do it under root. And I ...
0
votes
1answer
146 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 ...