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 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 ...
6
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1answer
171 views

Ubuntu settings after adding additional RAM

My system has 3.8 GB of ram. My system allows 8 GB of ram. If I insert another memory chip of 4 GB, do I have to make any other changes in OS setting etc?
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0answers
10 views

What is the max supported RAM by my system hardware? [duplicate]

I ran dmidecode command and it gave me following output: # dmidecode 2.12 SMBIOS 2.4 present. Handle 0x1000, DMI type 16, 15 bytes Physical Memory Array Location: System Board Or Motherboard ...
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1answer
48 views

Out of Memory Issue

I am running Ubuntu 14.04LTS on a Dell PowerEdge R730 with 32 GB of RAM and an Nvidia K80 GPU.. I have a python script that runs for a long time, but really just makes a bunch of relatively ...
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3answers
9k views

Ubuntu Memory Test

Several months ago I was having issues with a Windows PC. I booted from and Ubuntu CD, performed a memory test, and found that I had some bad RAM. I'm having some issues with another PC, so I ...
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6answers
33k views

How do I use zRam?

I installed zRam as described on webupd8.org. I installed it from the terminal. Is that all I have to do or do I have to do some configuration or something? Does the zram-enabler do everything by ...
1
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1answer
63 views

Ubuntu 15.10 - high ram usage

I am writing because I have no idea what going on with my favourite os, Ubuntu 15.10 with the kde desktop. The problem affect ram usage in normal work (chromium/firefox browser with few cards and ...
1
vote
1answer
35 views

Abnormal usage for memory

These days, my linux VPS is very slow, for that I've installed htop package using apt-get to see what is happening to my server. When I opened htop, I see that my server is using approximatively 700 ...
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7answers
18k views

How to determine where biggest files/directories on my system are stored?

I was wondering how do you know where the largest files in my system are stored. For example--- Disk Space Used: 1GB Java: 500MB Java Percentage: 50% maybe represented in a pie chart. Maybe? I know ...
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3answers
54k views

How to check for errors in RAM via linux?

I have ubuntu 11 running off a 3.6gb usb flash/stick drive. System has 4gb ram and blank harddisk (wiped using DBAN tool). How do i check if there are no errors in my RAM ? Is there a guaranteed way ...
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0answers
30 views

Ubuntu 14.04 installation stops when copying files

I have the following system config i5 processor, 4gb (2+2) ram, 1gb graphics card, 500gb hard disk. I tried adding another 4gb ram to my system. So I added the newly bought 4gb ram into my pc and ...
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0answers
58 views

Failed to alloc mem for ROM

So recently, I've bought the HP Pavilion x2 detachable. It came with Windows 10 but I wanted to install Ubuntu on it. I tried to install Ubuntu 15.10 but every time I tried to do that, the computer ...
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1answer
21 views

RAM DIMMs not detected [closed]

I just installed some new RAM cards, and I can't get them to work. In particular, lshw only detects the two cards that were there previously, not noticing the two new ones. I think I have the right ...
0
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1answer
413 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 ...
6
votes
2answers
5k views

Why is the evolution-calendar-factory process running?

Why is the evolution-calendar-factory process running? Here are some of the running processes (created with ps aux --forest) lightdm \_ /usr/bin/X -core :0 -auth /var/run/lightdm/root/:0 -nolisten ...
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3answers
217 views

reinstall of OS after decreasing memory

Do I need to reinstall OS after decreasing memory (RAM)? Originally I had 8GB while now only 4GB. OS: Ubuntu 14.04.3 LTS Linux p6-2315el 3.13.0-76-generic #120-Ubuntu SMP Mon Jan 18 15:59:10 UTC 2016 ...
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0answers
61 views

Aquaris phone other files using memory

I have a ubuntu (touch) phone Aquaris E5 (OS 15.04 r6) Of the 16gb of memory, 8gb is 'other' files When checking the memory, (system settings, about phone, memory), lots of file types are specified ...
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3answers
4k views

What can I move to RAM drive to have the system working faster?

Which files/directories can I move to RAM drive to have the system working faster? I'm planning to upgrade my laptop's memory to 8GB soon, so I'll have some fast memory to use. How to configure the ...
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0answers
75 views

MySQL gradually taking up more and more memory

Just to start with, I have read the following threads and they do not help: Optimising MySQL settings - mysqld running out of memory MySQL Server keep shutting down ...
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0answers
21 views

System freezes after upgrading to 32 GB RAM

I have recently upgraded my Toshiba Tecra W50-A-114 from 16 to 32 GB RAM (added 2x 8 GB modules of Kingston KTT-S3CL/8G that is certified to use with my laptop). I did clean installation of 64 bit ...
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0answers
35 views

How can I reduce the idle RAM usage of Ubuntu?

I already tried Lubuntu 15.10 which uses ~130mb of RAM and Ubuntu-core 15.10 + LXDE which uses ~100mb of RAM. I have decided Lubuntu is better for me and now I want to remove/disable services and ...
0
votes
1answer
35 views

Unable to set default value for swappiness

I have an Ubuntu 15.04 64bit with 4GB RAM. I do not have a separate swap partition, but a swapfile of 8GB. The system recognizes the swap. I have tried to set swappiness to 15 by adding it to the ...
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0answers
5 views

Kubuntu, Flex mode ram and intel graphics

I'm running Kubuntu 15.10 and I have a Gigabyte GA-G41M-Combo. I'm using the integrated Intel graphics. I'm trying to use a 4Gb ram stick and a 2Gb (different speeds). Both memories work fine by ...
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0answers
18 views

Memory and swap full from Rails App on EC2 Ubuntu Apache Passenger

I am not familiar with htop or ubuntu processes but my app's memory is full almost immediately after rebooting. Each of the rails processes seem to be taking up 25% of my memory. I recently upgraded ...
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0answers
36 views

Ubuntu Memory Low

When I SSH in, my memory usage is at57%. It looks like I have very little RAM available but I don't think that was the case before... ubuntu:/etc/projects/myapp$ free -h total ...
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0answers
16 views

Does Ubuntu have a Windows SpeedBoost feature?

My computer only has 1GB of ram and I want to run a Minecraft Server which requires more ram. Can I use something like Windows SpeedBoost?
0
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0answers
18 views

How to extend the virtual memory in Linux?

I have a 1GB ram pc, is there a way to extend virtual memory? I cannot do anything because my pc is moving horribly slow. I am planning on buying a raspberry pi b+ and really need it fast for a ...
0
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0answers
8 views

Erase swap memory storage when app load decreased

I have enough RAM for most purposes, but sometimes I inevitably get carried away with the number of apps and tabs I have open, pushing short-term memory storage into swap. I'll then do an inventory ...
1
vote
1answer
64 views

Linux overwriting RAM with zeroes on free()

I was just wondering if it is possible to tell Linux/Ubuntu to overwrite freed memory with zeroes before letting the next application allocate it? If not, why isn't this possible? I know that ...
0
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1answer
33 views

Graphic aberrations when swapping

Ever since I started to use Ubuntu on my ThinkPad X200, I have noticed that in certain situations certain graphical elements (desktop backgrounds, button icons, text) will become distorted. You can ...
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0answers
18 views

Does Ubuntu write to certain memory addresses?

I have some options in BIOS setup that allow caching video BIOS, system BIOS and video RAM to C0000h-C7FFFh, F0000h-FFFFFh and A0000h-AFFFFh, respectively. Does Ubuntu write to these locations? (Doing ...
0
votes
1answer
62 views

Why is Lubuntu slower than Kubuntu (in the same machine)?

I have a FS Amilo laptop with 2GB of RAM. I have Kubuntu, Lubuntu, and Puppy Linux installed on it. I chose Lubuntu for speed, but my experience isn't as smooth as I expected. The desktop ...
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1answer
39 views

Upgraded from 3gb ram to 4gb ram, ubuntu 15 amd64 will not load and keeps rebooting, unbuntu amd64 live will do the same

I have a Samsung X360 laptop. It comes with 3gb ram installed. I have ubuntu 15 64bit installed. I upgraded the 1gb stick to a 2gb stick. Upgrading from 3gb ram to 4gb ram, ubuntu 15 amd64 will not ...
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1answer
2k views

Performance Ubuntu 14.04.3 LTS vs 15.10

I am running now on Windows 7, but i am thinking about going to Linux (Ubuntu), i have experiences only with debian (VPS) yet :) But i like Linux, so i would like to have Ubuntu as my primary desktop ...
3
votes
2answers
611 views

fdisk -l shows 16 ram disks /dev/ram0 … /ram15

Ever since I upgraded to 15.10, fdisk -l reports 16 ram disks (/dev/ram0 ... /dev/ram15). I'm a bit unsure what those are needed for. Is it safe to delete them? If not, how can I get rid of that fdisk ...
2
votes
1answer
1k views

ramdisk, compressed, writeable, no swap

I need a ramdisk who handle transparent realtime compression on write and decompression on read. Example : I use /dev/shm, or I create a new tmpfs, mount it writeable and compressed. I wrote and ...
1
vote
0answers
57 views

constantly files corrupted after ssd and ram upgrade

I have a ~5-year old ThinkPad x201 and it worked fine until I chose to update my ram and disk to now: description: SODIMM DDR3 Synchronous (according to sudo lshw -class memory (M471B5273CH0-CH9 and ...
0
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0answers
25 views

Why is Ubuntu 15.10 x64 Server EDAC giving a slot error for 48Gb ram (x12 2Gb Slots)

I have been running a homelab on a supermicro server that has a total of 48Gb of ram on 12 2Gb slots and I have been getting a repetitive error from EDAC every few seconds. EDAC MC0: INTERNAL ...
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1answer
5k views

What is recommended size or ram for ubuntu 64bit virtualbox host?

I want to use ubuntu 14.04 64bit as a host to run virtual box. Some places say that the minimum ram requirement for ubuntu is 512mb where as on the downloads section it says that 64bit is only for ...
25
votes
3answers
13k views

'zeitgeist-fts' always using a lot of memory!

What is zeitgeist-fts?! It's always in the 3 top positions of memory usage (competing with Firefox and Compiz) . After a fresh boot it uses about 30 MB, but after some hours or a day, it goes above ...
0
votes
0answers
16 views

Changing Shared Memory in Ubuntu

So I just received my i7-4790k and installed it into a MSI z97 Gaming 5 motherboard. However, the shared memory is restricted to 512MB, and it seems to be possible to increase the amount in Windows, ...
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vote
2answers
1k views

ZRAM vs. regular swap partition

I don't fully understand the functionality and the potential advantages of zram. For example: once zram is activated, what percentage of memory will be dedicated to paging? Another issue: obviously ...
1
vote
2answers
7k views

Display sums of memory usage of “similar processes”

I want to have a whole list of all the processes with their memory usage. I want to sum up the memory usage of similar processes (i.e. processes with the same name or the same father process) How ...
0
votes
0answers
149 views

Chrome/chromium very slow after idle in ubuntu 15.10

I have this pretty strange problem with both chrome and chromium browser. While working with them they are perfectly fine and fast browsers, but if I leave my PC idle for some time like 10+ minutes ...
2
votes
0answers
25 views

Edit Aufs Tmpfs partition size

I followed this instruction https://help.ubuntu.com/community/aufsRootFileSystemOnUsbFlash to create a aufs RAMDISK for my xubuntu. It creates a 512MB Filesystem. SO, HOW CAN I CHANGE THAT SIZE FOR ...
0
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0answers
52 views

Ubuntu showing less ram than before after fresh install

I had Ubuntu 15.04 installed but its support ends in January. And I don't have that much bandwidth and money to do a upgrade every 9 months so I turned back to 14.04 and upgraded it to 14.04.3. But I ...
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votes
0answers
77 views

Kswapd0 using 100% of CPU

I've got a mini server running (L)ubuntu 14.04.3, kernel 3.4.39. Every once in a while, the process kswapd0 will use 100% of my CPU power, even though I only use about ~20% of my RAM at that time. ...
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votes
1answer
58 views

Increase ext4 partition size by decreasing Swap memory size in linux [duplicate]

I was a newbie while installing linux mint 17.2 in my laptop. So I allocated more than 20GB for my swap memory and 30Gb for ext4 partition. Now only I realized that swap memory is using instead of RAM ...
0
votes
1answer
61 views

fcitx process using more memory

yesterday i activated onscreen keyboard after notified fcitx process use 2600 Mb of ram so my machine is super slow,but everything is ok when i kill that process,what is this fcxti process and what ...
0
votes
0answers
49 views

kernel panic not syncing, after RAM upgrade

I have a motherboard Asus Rampage IV Extreme, processor Intel 4930k 6 cores, and 32Gb RAM Corsair Vengeance CL9 1866Mhz. I upgraded to 64Gb RAM Corsair Vengeance CL9 1866Mhz. Using RAM at 1333Mhz ...