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 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
149 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
82 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
256 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
194 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
313 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
62 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
179 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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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 ...
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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 ...
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1answer
47 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
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 ...
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2answers
192 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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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. ...
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1answer
224 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
77 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
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 ...
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2answers
505 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
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 ...
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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?
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1answer
917 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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2answers
513 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
257 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
212 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
28 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
147 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 ...
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1answer
115 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
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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
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1answer
787 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
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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 ...
3
votes
2answers
137 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 ...
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2answers
187 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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0answers
99 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
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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 --- ...
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1answer
101 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
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
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2answers
690 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
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1answer
38 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 ...
3
votes
1answer
213 views

Disable memory cache - real reason

OK, before you mark my thread a duplicate I want to say, that I know this very good answer: How do I clean or disable the memory cache? But this is not case for me. I am making some performance tests ...
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3answers
205 views

I want to know if increased RAM will help after conversion of XP-->Xubuntu 13.10

I'm using XP now in an old Dell PC. Here are the stats: OS Version: Microsoft Windows XP Professional, Service Pack 3, 32 bit Processor: Intel(R) Pentium(R) 4 CPU 2.80GHz, x86 Family 15 Model 4 ...
1
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1answer
86 views

Help with ram usage

I have a dual boot laptop with 512 MB RAM running Windows XP/Xubuntu. I try to load student.portal.chalmers.se (a huge bloat site) in Firefox. On XP, I can load the site without any swapping, but ...
0
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2answers
572 views

Server crashed a few times due to lack of memory - how can I find out how much is available to each process? [duplicate]

We had a huge spike in traffic with lots of these errors: Feb 17 10:44:13 111488 kernel: [8275767.506198] Out of memory: Kill process 20577 (apache2) score 52 or sacrifice child Feb 17 11:02:06 ...
1
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1answer
166 views

Lubuntu doesn't detect all the RAM (just 1GB of 1,5GB

I installed Lubuntu in a Thinkpad X40 laptop. The OS runs pretty well but it's not detecting (and using) all the RAM installed. The X40 has 512MB of internal RAM memory and an additional module of ...
2
votes
0answers
174 views

Can only access 1.9 gb of RAM on Ubuntu 12.04

So I installed Ubuntu 12.04 (edit: 64-bit) on my PC. My PC had 4 GB of RAM installed, which the BIOS recognizes. It also displays when I type uname -m, so the OS knows it's there. However, according ...
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votes
1answer
127 views

How to eject RAMDisk? [closed]

The following commands are how I create a RAMDisk on Ubuntu 12.04 LTS: sudo mkdir -p /media/ramdisk sudo mount -t tmpfs -o size=1024M tmpfs /media/ramdisk But now I have no idea to eject it. These ...
2
votes
1answer
400 views

Why is almost all of the 3 GB RAM on my HP G62 laptop always used? [duplicate]

I am using Ubuntu 13.10 on a computer with 3072 MB RAM and 20 GB swap. It is an HP G62 laptop which overheats pretty regularly. When I type free -mt in the terminal the output is: free -mt ...
1
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0answers
262 views

ubuntu 12.04 Init process provokes memory leak and CPU intensive usage

I have lately been having some memory and CPU issues with init process. After rebooting, the memory used by it keeps increasing at quite high pace, and after half hour it occupies all the memory RAM ...
1
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1answer
180 views

What do I do when extensive SWAP access makes system dead

Memory is getting low and heavy SWAP access makes my system responding very slowly at first, but if I don't react by freeing a lot of memory, the system becomes like almost completely dead. Now I have ...
0
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1answer
175 views

4GB out of 8GB total reserved 64bit 12.04 why

Can anyone explain why 50% of my ram is being reserved and for what? I do have two radeon 7990 cards but surely the ram is not reserved for them? root@stan-desktop:/home/stan# cat /etc/issue Ubuntu ...
1
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1answer
63 views

Unable to check the RAM usage per user

I was recently wanting to check the RAM usage per connected user on my server but could not find a way out. Please suggest some way.