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.

learn more… | top users | synonyms (1)

0
votes
1answer
543 views

Ubuntu 14.04 - 32 bit vs 64 bit

If I install Ubuntu 14.04 32 bit version on a machine with RAM exceeding 4 GB, will it not use more than 4 gb of ram ?
0
votes
2answers
971 views

can't suspend to RAM any more after upgrade to 14.04

I upgraded to 14.04 and now my laptop can't "sleep" anymore i.e. suspend to RAM doesn't work. How can I figure out what's wrong and fix this? edit 1 My hardware is a ASUS Zenbook UX32A edit 2 ...
0
votes
1answer
120 views

responsiveness drops drastically when RAM get's full after upgrading from 13.04

Since I've upgraded from ubuntu 13.04 to 14.04 (and before 13.10) my system get's to it's knees when the memory get's full and has to start swaping.. Of course I know that a performance penalty ...
3
votes
3answers
2k views

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 ...
0
votes
1answer
396 views

14.04 64 bit memory use

When I start the OS I have half of the memory used (1Gb) and now with chromium open this is the output of free: piero@piero-Vostro-400:~$ free total used free shared ...
3
votes
2answers
136 views

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 ...
0
votes
1answer
40 views

Are all pages of a process loaded in swap file / partition?

"Swap space is the area on a hard disk which is part of the Virtual Memory of your machine, which is a combination of accessible physical memory (RAM) and the swap space" . According to a user now , ...
0
votes
2answers
29 views

In Consistent RAM reports

"System Monitor" tells me i am using 1.3GB of 2.9GB at 42.8% "atop" tells me i am have 174.8M Free "top" tells me i have 3072772 total, 2894424 used, 178348 free 3072772KB = 2.93042373657227GB ...
8
votes
1answer
8k views

zram vs zswap vs zcache Ultimate guide: when to use which one

What the hell are they? how are they different (I've written my understanding in an answer below) In the Zswap system, when a page is evicted from the zswap to the actual swap is it stored in a ...
6
votes
2answers
139 views

How much RAM is this application using?

If I run top -c or htop I get processes with their memory consumption, but it is not what I want to see. Is there a command line that allows to see the RAM consumption of a given application ? For ...
0
votes
1answer
487 views

What is wrong with the memory usage?

I can't figure out what is consuming my memory... Could anyone help me? user@desktop:~$ free total used free shared buffers cached Mem: 8176992 6186776 ...
0
votes
1answer
240 views

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 ...
1
vote
3answers
320 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 ...
1
vote
1answer
153 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 ...
2
votes
1answer
90 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 ...
4
votes
1answer
260 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 ...
0
votes
1answer
213 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 ...
0
votes
1answer
323 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?
0
votes
1answer
63 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
0
votes
1answer
193 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?
2
votes
2answers
3k 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 ...
1
vote
2answers
49 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 ...
0
votes
1answer
48 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 ...
0
votes
1answer
1k 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 ...
3
votes
2answers
199 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 ) ...
11
votes
1answer
9k 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. ...
3
votes
1answer
226 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 ...
1
vote
0answers
79 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 ...
0
votes
2answers
1k 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 ...
2
votes
2answers
518 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 ...
0
votes
1answer
30 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 ...
0
votes
1answer
55 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?
2
votes
1answer
941 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. ...
0
votes
2answers
527 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 ...
1
vote
1answer
268 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 ...
1
vote
2answers
220 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 ...
0
votes
0answers
29 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?
0
votes
1answer
154 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
vote
1answer
116 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
39 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
828 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 ...
6
votes
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 ...
3
votes
2answers
155 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
votes
2answers
197 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?
1
vote
0answers
103 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
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
106 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 ...
0
votes
0answers
24 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
709 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 ...
0
votes
1answer
40 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 ...