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 the minimum video memory for a virtualbox machine so large?

I'm creating many virtualbox systems with clean installs and such and noticed that the default video memory size is quite large. I could understand at the beginning of the Ubuntu installation a VGA ...
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3answers
150 views

Ubuntu Frozen every time when Memory usage over 80%

Ubuntu Frozen every time when Memory usage over 80%, It seems that the system hangs due to a load of disk IO - the screen is frozen and the only thing I can see is the indicator LED of disk keeping ...
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1answer
116 views

Know programs in cache

I have this situation with RAM and SWAP at the moment: $ free -h total used free shared buffers cached Mem: 7,7G 7,5G 159M 100M ...
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1answer
50 views

Lagging when swapping

I use Ubuntu 14.04 on my Lenovo E531 with 4GB installed. The problem is that when the RAM is about 70% full the system starts swapping. After swap is used (even if only 10MB is in swap) the system ...
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1answer
176 views

245 MB RAM are detected instead of 8 GB Ubuntu 64 bits

I run free -m and I got 245 MB of available RAM while I have 8 GB ! My BIOS detects 8 GB ! What can I do to 'recover back the RAM space ? free -m outputs this: total used ...
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1answer
59 views

Can Ubuntu cope with bad RAM?

I have installed Ubuntu on a computer which hat bad/defective RAM (memtest86+) showed that later. The thing is I did not have any problems with Ubuntu 14.04 while Windows 7 installed on the same ...
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1answer
157 views

Ubuntu does not recognize 8GB of RAM [closed]

I have just installed Ubuntu 14.04 64-bit on my laptop and on the system monitor it only shows 7.2 GB of RAM and not 8 GB. Why is that?
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1answer
41 views

Ubuntu 12.04 LTS doesn't recognize full memory?

I have Pentium 4 Desktop, Intel D915PGN mother board with a full 4 GB of ram, but my Ubuntu 12.04 64 bit only recognize 3 GB of ram, do you guys have any suggestion? Thank you
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1answer
75 views

Can I increase the size of the processor L1 and L2 caches? [closed]

Im running an Ubuntu server 12.04 and checked my CPU status with lscpu and got result: L1d cache: 32k L1i cache: 32k L2 cache: 6144k How can increase my Cache size?
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0answers
18 views

Why is my launcher automatically set to default and personal keyboard layouts disappeared?

Yesterday, I was using a program to read something into the RAM, but underestimated the size. My computer started swapping and lost itself in its calculation, hence I killed the process (and firefox ...
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0answers
117 views

Ubuntu 12.04 server: Problem with apache internal processes using too much memory?

I've looked around and couldn't find an answer for this, tried quite a few of other people's solutions over the months, but nothing fixes this. I run 12.04 on a good VPS, but I've been having some ...
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2answers
745 views

Ubuntu 14.04 (amd64) not detecting all of my memory

I've got 4gb of RAM installed in my machine but Ubuntu only detects 2.8gb of RAM If I run uname -a I get: Linux DeLillo 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 ...
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2answers
46 views

Is Ubuntu running all users at the same time?

Every time when I have some memory intensive things running on one user and switch to another one, I can see that the memory usage continues. Is the other user actually still running? If so, is it ...
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0answers
45 views

Memory and the OOM killer problem

I got a laptop with 4GB memory and 14.04, and I see regular OOM KILLER that kills processes and high CPU from swapd but swap is almost not used. But I want to understand this happens and/or how I can ...
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0answers
143 views

Xen PCI Passthru works with 2GB RAM but not with 4GB RAM

I set up Xen on Ubuntu 14.04 (Xen 4.4). With my config I can only use PCI passthru when giving DomU 2048MB RAM. When giving 4096MB the GPU doesn't work (windows says Code 12). Here is my win7.cfg: ...
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1answer
37 views

Ubuntu 13.10 ram? [closed]

Does Ubuntu 13.10 work well with an acer aspire one d255-2dqkk intel atom-n450 with 1GB of RAM? I tried it via the installation in an usb and by booting my pc with it and it seems working well... But ...
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1answer
815 views

Increasing swap memory in ubuntu 14.04

I want to know if it is possible to increase swap memory in Ubuntu 14.04. How is it possible? Another question: I installed Ubuntu 14.04 on my laptop (ASUS)...When I'm working with it and open URL ...
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1answer
84 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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0answers
150 views

Upgrade to 14.04 Memory Allocation Problem

Recently did a fresh install on my laptop to 13.10 to prepare for the LTS release. I started the upgrade process when the updater prompted and read a book waiting for it. When I checked on the ...
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1answer
4k views

Why is Ubuntu 14.04 using too much RAM..? [closed]

Compiz in earlier versions of Ubuntu took around 60-65 MB of RAM. In Ubuntu 14.04, it is taking around 205-201 MB. And Nautilus took 35 MB of RAM in earlier versions, it is taking a minimum of 65 MB. ...
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1answer
128 views

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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0answers
49 views

Oneconf eating up memory while in chrome

When I look at the dependencies in Synaptic, it shows Ubuntu desktop, and software center as being dependent on oneconf, and I do not wish to remove these. However whenever I get to a page which has ...
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2answers
116 views

How can I see in Lubuntu what RAM modules I have?

I have the latest Lubuntu installed on a laptop. How can I see how many RAM modules I have installed, and what type of RAM modules they are, without physically opening the laptop itself? I can see ...
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votes
2answers
362 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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1answer
23 views

How can I handle more than 2 GB RAM?

I got a Lenovo g475 laptop, with a AMD e-300 processor. According to what I have read, the processor can handle up to 8GB and same the motherboard. When I was using Windows 7 starter I could handle a ...
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1answer
42 views

What is the memory limit on ubuntu? [duplicate]

I'm a inexperienced user on Linux and was wondering if it had any limit. Windows has limit 32bit-4GB, 64bit-128GB or so. Any help appreciated. Does the 32bit version of ubuntu have a limit?
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1answer
398 views

Memory is taken up by “invisible” threads

Xubuntu Saucy with 4GB RAM. When the computer is restarted and immediately after login, about 500 MB of RAM is taken according to free -m. Then I run some programs and memory usage goes above 3 GM. ...
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0answers
39 views

System running very lagish and slow-responding

The system is very slow to respond, and wherever I click, the window appears slowly (almost as if its transparency is reduced). The specification is: -OS: Ubuntu 13.1 32-bit -Memory: 1GB -Processor: ...
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0answers
27 views

Dev box: no swap space to speed up OOM killer

The TLDR: I do bad moves that flood the RAM, I'm curious whether having no swap would spare me the half hour wait for the OOM killer. Before deploying a few machines with a hacky config, I'd like the ...
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2answers
172 views

ramdisk not in ram (ubuntu 12.04)

I followed this post to create a ramdisk. After that, when I copy a file to the directory, the file was copied, but memory usage as shown in gnome-system-monitor does not increase. Also, I tried ...
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1answer
138 views

Is there a maximum swap partition size for 12.04, 64 bit

I am running 64 bit ubuntu 12.04 on HP Envy Spectre ultrabook, with 4GB of RAM. I have been running into problems with python code which uses RAM very inefficiently, see e.g. here, causing my code to ...
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2answers
86 views

Why do some processes use swap and others don't?

I experience from time to time when I'm working heavily, that my systems (Ubuntu 13.10) freezes. Syslog says, that a process had to be killed to to memory shortage. Killed process 4693 ...
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0answers
25 views

Ubuntu and system RAM [duplicate]

I just installed Ubuntu 12.04 on an older box, a Dell Optiplex with a P4 3.04 processor and 4 gb of RAM. Ubuntu seems only to be recognizing 2.267 gb. What's up with that?
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1answer
68 views

my cache fills up but never goes down

I know Ubuntu manages memory autocratically, it stores cache on ram for quick program access, but every time I fill up the cache, it stays filled up, and Ubuntu it self cant delete the cache, if I ...
1
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1answer
83 views

How to convert to a Lighter wight Ubuntu 13.04 Desktop

I am using Ubuntu 13.04 Desktop and I'm happy with it. However sometime I think the older versions were better as they were lighter or utilized less resources. Is there any way that, it will ask me ...
0
votes
1answer
24 views

Why Doesn't The Full Amount of RAM appear?

I just upgraded by Gateway DX300x PC running Ubuntu 13.10 with a full 4GB of RAM. The specs say it should be able to handle this but when I check the System Settings it only shows 3.2GB of RAM. Is ...
0
votes
1answer
122 views

Memory check without rebooting?

I picked up a laptop at the flea market. Seems to be Chinese product for internal market. It had Windows Starter that didn't even boot at all. I installed Linux and found out that its motherboard ...
5
votes
1answer
1k 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 ...
3
votes
2answers
56 views

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 ...
0
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2answers
117 views

How to use my 6GB of free ram to optimize ubuntu12.04?

I also want to load faster on boot. If possible, can I shift all temp file hard disk operation to RAM?
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vote
0answers
69 views

Performance goes to Zero when RAM cache is full [closed]

This isn't a straightforward question as I've read that cached RAM will be released when needed. I have the hunch that this is not happening on my system (or something else is skrewed). I have a AMD ...
0
votes
0answers
320 views

Ubuntu high memory usage

I am using Ubuntu 12.10 . When booting the RAM that is used is about 1-5 GiB. However,after a while when I use chrome and Skype the RAM used is about 4 GiB.(My pc has only 4 GiB RAM). I am not sure ...
0
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0answers
43 views

Ubuntu NAS, cache files to ram for enhanced transfers?

I have a little dual core celeron computer that I will be using as a NAS. I have 8 GB of ram, and I was wondering if there was anyway to leverage that ram to increase file transfer speeds, especially ...
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0answers
44 views

Setting Max Connections in MySQL server Globally [duplicate]

I installed my UBUNTU 12.04.4 LTS X64 yesterday and didn't installed anything except mysql-server and mysql-client. But htop showing 20 mysqld identical processes. *--Process----- MEM%---VIRT --- ...
0
votes
1answer
64 views

Ubuntu Only shows 2.7 gb of ram, I have 4 Gb!

Okay friends I am brand-spankin-new to Ubuntu, I duel booted it with windows vista 32 bit, in vista I Also only show 2.7 Gb through internet research i have concluded that that was because I had the ...
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0answers
21 views

How to clean SWAP space in ubuntu 12.04 [duplicate]

I have a computer with ubuntu 12.04 installed. Unfortunately, when I run a memory taking program, it fills the RAM and uses the SWAP space. Then after the program terminates, the memory is completely ...
2
votes
2answers
339 views

Ubuntu 13.10 64Bit version only shows 2.9GB of Ram

I have an old PC at home with 1.5 GB of RAM and as expected its quite slow. So I decided to install Ubuntu on a different PC. Intel Quad Core and 4 GB of memory, and a graphic card with dedicated ...
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0answers
122 views

Ubuntu 12.04 Sever is running slow and not using full ram

I have a ubuntu VM of 12.04 server virsion and it is running on centos. VM have 8GB of RAM and 1 core processor for it. I amd running following application on it hadoop 1.0.4 hbase-0.94.12 ...
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votes
1answer
34 views

Assigning RAM in a virtual machine

This is probably a really dumb question, but I want to be sure before I give my virtual machine memory. I'm going to try to install Linux on my mac through virtual box but I need to allocate RAM for ...
1
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0answers
26 views

Virtual memory or swap memory on ubuntu installed by wubi installer

I am using Ubuntu 32 bit which I have installed inside windows 7 with wubi installer. I have noted that my Ubuntu swap memory is only 256MB and my ram is 2GB. I have tried my best to gain swap memory ...