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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149 views

My computer halts for short times intermittently. Is it related to my fan making a lot of noise?

I have two problems with my computer. The system is halting for short times intermittently so the computers becomes almost impossible to use for short times that can happen just when the computer ...
1
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0answers
184 views

Firefox eventually for no aparent reason consumes all CPU and RAM and grinds to a halt pulling my computer along with it

I now use Firefox as my default browser and have found that after having it up and running for several hours, that it starts to use up more and more of my CPU and RAM, and this does not appear to have ...
2
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3answers
448 views

Why does the system report 7.7Gb of total Ram when I installed 8Gb?

Why does the system report 7.7Gb of total Ram when I installed 8Gb? I'm using 14.04 on a Dell Vostro 2011
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1answer
103 views

Can I install Ubuntu 15.04 (Vivid Vervet) in place of Ubuntu 14.04 LTS and keep all my data (media, documents, etc)?

I have been using Ubuntu 14.04 LTS for the better part of a year, but lately I keep having problems with my OS. I repeatedly get a message about not enough space in the boot, and when I attempt to ...
3
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2answers
595 views

Ubuntu and Live USB won't Boot after power cut 15.04 BTRFS

I didn't think this was a problem until it happened to me twice on two different systems and have never seen this before. First time I was running Xubuntu 15.04 on a Lenovo T61 using BTRFS. The ...
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2answers
197 views

How to get a good overview of RAM usage

I have installed Ubuntu 14.10 on a server. The server main task is running a MongoDB installation along with several NodeJS applications. The NodeJS applications will run continuously and will accept ...
0
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2answers
279 views

Is it safe to delete a Swap Partition on a USB install?

I have a Ubuntu 14.04 installation on my 32gb USB drive. I recently read that having a Swap causes a lot of reads and writes to the drive making the OS slow and reducing the lifespan of the drive. ...
0
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1answer
144 views

32 bit or 64 bit becauce of upgrade of RAM? [duplicate]

On an old Dell PC that originally ran Windows XP 32 bit that I erased the Windows XP 32 bit and installed Ubuntu 32 bit on with less than 2 gigs of RAM. I would like to upgrade the RAM above 2 gigs. ...
0
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1answer
180 views

Too much swap, how do I change it?

I'm new at Ubuntu and I'm fiddling around with Ubuntu Server 14.04. I'm trying to get it to run a Minecraft server, but whenever anyone joins, it starts skipping ticks and players reported heavy block-...
0
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1answer
80 views

Various programmes crashing frquently - could be an issue with the system?

About a week ago Firefox started crashing very frequently, 20 to 30 times a day. On random pages, doing random things, sometimes even when it is minimised. I ran the updates and checked the system for ...
3
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1answer
1k views

Can Ubuntu 32-bit access 8GB RAM?

I need to use a large software package (Xojo) that requires the 32-bit architecture to run. Try as I might, I can't seem to install the 32-bit libraries on my 64-bit installation of 15.04. I don't ...
0
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1answer
91 views

Ubuntu sees 3 out of 4GB of RAM on PAE supported 32bit system

I have 4 gigs of memory inside my laptop but only 3 gigs are showing up and PAE is supported as shown below. Why can't I use all 4 gigs of memory even though my 32 bit system shows that it supports ...
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2answers
481 views

Why does Lubuntu shows less RAM than installed?

I am using Lubuntu 14.04 I have two sticks of 4 GB RAM, they work fine under Windows. But when I open the LXTask it says I have 7868 MB when it should show 8192 MB. Using no integrated graphics (...
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1answer
190 views

restrict memory usage to prevent swapping

I have an SSD and 8GB memory, and no swap partition. My normal use never ever needs more than 3-4GB. However from time to time I observed that some memory-leaking programs can still freeze the system ...
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0answers
2k 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 ...
3
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0answers
113 views

“-/+ buffers/cache memory” is zero

i have an OpenVZ VPS with ubuntu server 14.04.2 and i can access to a SolusVM control panel. Recently, "memory usage" is always 0 KB, and only "vswap usage" shows real swap usage. if i run free -k i ...
2
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1answer
6k views

Could I install Ubuntu on SD card and runt it from my Chromebook?

So I just installed Ubuntu on my Chromebook. Now the main issue is that the internal memory is limited. I am thinking of using a 64 GB SD card to expend the memory. Would it run as smooth as it does ...
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0answers
131 views

Ubuntu 12.04 only recognising 2.9Gb Ram out of 4Gb

Yes it is a 32-bit installation, but there is supposed to be PAE that allows it to use all of the ram. The command: sudo lshw -class memory | grep GiB -m 1 Tells me that yes there is 4Gb ...
2
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1answer
43 views

How to check if there is already a swap area?

I am using Ubuntu 14.04 on my laptop with 4 GB RAM. I had chosen option to "replace Windows 8 and install Ubuntu with LVM" when installing Ubuntu. Now I wanted to create a swap partition, I executed ...
0
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1answer
131 views

Virtual RAM folder in Ubuntu?

I would like to have a folder mounted as temporary, which is actually my RAM. This is so that, for example, I could copy a movie into my RAM, unplug my external drive, and then watch it. Can this be ...
0
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2answers
176 views

Ubuntu 14.04 RAM not usable — mallocate problem

I have a strange situation where my Ubuntu server (14.04) is not recognizing all of the memory installed in my server. I have a HP Proliant DL 380 G3 server (32bit) with 10 GB memory. I couldn't use ...
0
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1answer
388 views

Is it possible to limit cache memory to a process?

I am using network capture tool named dumpcap and it is consuming too much cache memory. So other processes getting no memory to run. htop command shown cache memory as 29 GB in Meters. Can ...
2
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3answers
200 views

record of swap/memory usage - how to do it?

Here is a quick intro to the problem, but if you're interested only on the question, I think you may skip to the last paragraph. I have installed Ubuntu Mate on my laptop with the recommended amount ...
15
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2answers
19k views

How do I run memtest86+?

If I encounter a situation where I suspect my machine's RAM might be going bad, I might need to launch memtest86+ to check it. How can I do this using Ubuntu? Are there different methods for launching ...
0
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1answer
131 views

Real & accurate memory usage statistics (top)?

Need accurate memory usage statistics to figure out what size matrix I can work with without choking the RAM on this laptop. ;) I am using top to figure out how much memory an app I'm working on is ...
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1answer
1k views

How do I know how much RAM can I upgrade my laptop?

I have a HP Pavilion laptop quite old (2008) which I would like to increase the RAM. Ideally I would like to have 8Gb but I have no idea how to check if hardware could support this extension. These ...
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2answers
471 views

Gluglug ThinkPad X200 Ubuntu?

I'm looking at buying the Lenovo ThinkPad X200 from Gluglug (http://shop.gluglug.org.uk/product/libreboot-x200/) and they say they have Libreboot so you can install any OS, but I'm wondering if the ...
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0answers
29 views

Wrong amount of memory show in Settings -> Details in Ubuntu 14.04 [duplicate]

I have installed 4Gb as two modules but only 2.9Gb is shown in Settings.
0
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1answer
556 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 ...
0
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1answer
63 views

How to free up my laptop's RAM?

I have an old DELL laptop with 2GB of RAM and Ubuntu 14.04 (64-bit) as its OS. Many times I am out of RAM and thus every thing goes very slow! I think there is many background programs (services or ...
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2answers
420 views

RAM memory size info confusion; F2 key or “System Setting”?

I am receiving two different figures for my RAM size. I have installed 2x2GB RAM and F2 key says I have 4028MB but Ubuntu System Setting "Detail" aka "About this computer" says I only have 2,9G. I ...
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4answers
4k views

Is there any application or command that cleans the memory like CCleaner in Windows?

After the system has been running for 8 hours continuously, it becomes slow. When I faced the same situation on Windows, I used CCleaner to clean memory, which used to give me a little boost. Is ...
0
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2answers
500 views

Why do programs (including Xorg) close when out of RAM but Swap is near empty?

I have some swap configured and I believe activated... Filename Type Size Used Priority /dev/sda5 partition 7811068 1124912 200 /mnt/data02/...
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1answer
66 views

Can I install 8gb of memory to full Macbook 5,1 Ubuntu install?

Seems that 8gb of memory is not stable in original Macbook 5,1 if I'm not running "Mac OS X 10.6 "Snow Leopard" or higher and have Boot ROM Version MB51.007D.B03" (http://www.everymac.com/systems/...
0
votes
1answer
97 views

Theoretical question about memory usage

I'm wondering about following issue: Taken some abc console(no matter if bash,zsh or something) in some *nix system. If I start some process stuff which uses 2MB of memory and then launch second ...
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0answers
350 views

X.org is allocating more than 900MB of RAM but xrestop says ~1/40th of that is actually used; how I force it to free the rest without restarting X?

So X.org is allocating an insane amount of RAM: right now 910MB (according to the RES column in htop), second only to Firefox (really Nightly) (at just over 1GB) and trailed by GNOME Shell (at only ...
0
votes
1answer
357 views

4GB RAM installed, Ubuntu shows 2.5GB

Lenovo ThinkPad E430, hardware is straight from the vendor, untouched. There are 4GB RAM installed, one card. Yesterday I discovered Ubuntu sees only 2.5GB. BIOS detects 4GB RAM. The system is 64bit ...
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1answer
483 views

ubuntu 14.04 server memory problems

I'm getting this weird memory problem that causes massive slow down on any programs but doesnt want to go away till reboot. so when i do htop the memory usage shows half my ram is used but if i do ...
0
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1answer
994 views

Ubuntu 14.04 LTS 64-bit only shows 4GB RAM out of 8GB recognized [closed]

I have two memory cards of 4GB = 8GB RAM installed and Ubuntu 14.04 LTS 64-bit only shows 4GB RAM. How can I make it show the whole 8GB? You can see the details below, I have also included some ...
0
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2answers
602 views

Can i use Ubuntu 14.04 32bit on 4GB ram? [duplicate]

like the title, if yes it can use all my RAM if needed ? or max just 2GB
0
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1answer
84 views

Xubuntu won't start when using 4Gb Ram

So here is the situation, I was using Ubuntu 14.04 32 bits. Removed everything from the partition I had and created an additional Swap partition and installed Xubuntu 14.04 64 bits. When booting I can ...
4
votes
1answer
255 views

How to Setup tempfs/RAM Disk (Generally and for LuaLaTeX)?

I've spent the past several hours (not few, several!) reading different pages and questions on how to setup a tmpfs/RAMDisk. They all say different things and say what filesystems I should and shouldn'...
1
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2answers
384 views

Gnome System Monitor shows only 5.7 GiB RAM of 8GB installed

Some time ago, I reinstalled Ubuntu, like I did a lot of time before. Since then, Gnome System Monitor and System Information (and any other graphical tool I tried, for that matter) show only 5,7 GiB ...
3
votes
0answers
146 views

Lubuntu: text on system menus/bars appears blurred when memory usage is high

I have an old system (Core 2 Duo 2.0 GHz, 3 GB RAM), running Lubuntu 14.10. When I run memory intensive applications, the text on title-bars, menu-bars and notification panels appears extremely blurry ...
2
votes
4answers
1k views

How to optimize RAM memory in Ubuntu 12.04?

Good day everyone and merry Christmas. I am worried about RAM memory. The Internet goes slowly. I work with pictures and videos but pictures are stored in a Pendrive. I have 2Gib of RAM but I think ...
0
votes
2answers
284 views

System consumes all memory even after hardware upgrade

Previously, I had a 4GB RAM server with Linode. Several times, I did "free -m" command to check available memory. Most of the times it showed less than 200 Mb free. Major processes I am running ...
1
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1answer
571 views

8GB RAM is fullfilled, addressed /tmp /var/log into RAM

Ok, so I have 8GB memory and 30GB msata storage + some external drives... 30GB for ubuntu, no SWAP partition, only main / Updated fstab to store /tmp and /var/log into RAM and Firefox caching into /...
2
votes
1answer
133 views

RAM not fully usable in 64-bit Ubuntu GNU/Linux

Greetings Ubuntu Community, I have 4 GB of DDR2 RAM and an x86_64 CPU and Ubuntu OS. When I am in Ubuntu I notice from the details section in settings that I have 3.86 GB of RAM when I am sure that I ...
5
votes
1answer
721 views

How to prevent my system from becoming unresponsive when thrashing (out of RAM)?

I have 8GB of RAM, but sometimes I'm running a couple VMs and enough Chrome processes to use up most of my memory. That's usually fine, but sometimes my system starts thrashing, and it's difficult ...
1
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1answer
2k views

Apache eating up 2GB of RAM

I have a 1GB VPS server running 12.0.4 ubuntu. Everything works just fine, most of time my RAM usage shows around 700 MB. However every week or so at random time Server goes out of memory and crashes. ...