Questions about improving the performance/speed of Ubuntu. Note that this is a general tag, and should be accompanied by another tag indicating what kind of performance you are referring to.

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2
votes
0answers
70 views

KVM guest performance impacted by very long virtblk disk wait times

I have several KVM guests running on Ubuntu 14.04 using libvirt. Their performance is very poor. The intermittent nature of the poor performance with an order of magnitude variability in simple ...
7
votes
5answers
7k views

Why is Ubuntu 14.04 so slow on my laptop? [closed]

I just installed Ubuntu 14.04 on a Dell laptop with 1.7Ghz Pentium M and 1Gbyte memory. Graphics are Intel® 852GM/855GM x86/MMX/SSE2, OS type is 32bit. The whole system is VERY slow. When I launch the ...
12
votes
4answers
1k views

Ubuntu on low performance laptop [duplicate]

My sister has always wanted a macbook, but I recently convinced her that Ubuntu is a great OS with much more similarity to Mac OS than Windows. She said I can install Ubuntu on her laptop but it is ...
1
vote
0answers
192 views

Very high IOWAIT times

I have a large system - 128GB, a couple of RAID0 filesystems (6TB and 2TB) with an SSD cache, 8 cores (16 with hyperthreading), running Ubuntu 12.04 64bit. When I try to write a large file I get very ...
3
votes
0answers
109 views

Constant HIGH CPU Usage - even after reboot with no applications

Here is a PROBLEM, a lists of my ATTEMPTS to solve it, and a PLEA for help: [As indicated, I have read all similar 'answered' questions, and have not found an answer that works for me.] ...
0
votes
1answer
115 views

Ubuntu dead slow after last update

It's been a few days now. Everything is SLOW as hell. Going from a desktop to the next is slow. Unlocking my workstation kind of fades out the lock screen and fades in the desktop. The animation takes ...
0
votes
0answers
31 views

If I change desktop environment will I loose all settings and software I already have. Ubuntu to XUbuntu

I installed Ubuntu 14 (64bit) and later I found that Xubuntu is more lighter. I would like to have better performance than visually appealing UI. I work on ruby on rails and I have setup everything ...
1
vote
1answer
59 views

Curious about UnixBench results, is my HD configured properly?

I downloaded UnixBench 5.1.3 and ran it on both my old Dell 4600 and my newer Gateway SX2800. With a 2.4Ghz P4 the Dell gets clobbered on cpu tests by the Gateway with quad core Q8200 at 2.3GHz. The ...
0
votes
1answer
27 views

Testing multiple desktops simultaniously

Our college is installing new ubuntu installed systems for our lab.They want to test the performance of the systems.I googled some benchmarking tools but we have 250 systems to test,is there a easy ...
0
votes
0answers
171 views

slow hard disk Ubunto 14.04 ext4 on thinkpad dual boot

Ext4 - is it slower? Have a Thinkpad with 8GB drive , 4 processors. Intel® Core™ i3-3110M CPU @ 2.40GHz × 4 . Ubuntu 14.04 LTS with updates applied. File reading is very slow. IDE STS hangs when a ...
4
votes
2answers
220 views

Will performance be worse if I encrypt the entire Hard Drive / SDD?

If I use whole disk encryption, will I notice a drop in performance? And what about for a SSD? And I see that there is a option in my bios that enables Intel AES-NI does this have any effect on my ...
2
votes
1answer
49 views

When should a fresh install should be made [closed]

On my desktop at home, a 2008 Vaio w/4GB RAM and dual core processor running 12.04 LTS, I've been experiencing of late a perceived performance degradation. It's most apparent at startup but it's also ...
0
votes
1answer
48 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 ...
0
votes
1answer
45 views

Why is radeontop showing 0,00% in all fields?

I'm trying to get realtime statistics about my graphics card utilization, and the program radeontop is supposed to enable that. However, as you can see in the screenshot below, it reports all the ...
2
votes
0answers
104 views

SD card write speed not as advertised, on 14.04 at least

I bought a new SD card and the claimed performance is a long way from my benchmark. Is there something I can do improve the transfer speed when working with this SD card? Information on the disk: $ ...
2
votes
3answers
640 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 ...
3
votes
0answers
170 views

ls on home directory very slow

A while ago, I accidentally created hundreds of thousands of files in my home directory which I subsequently deleted. Since then however, running ls in my home directory has been extremely slow ...
10
votes
2answers
4k views

Does Ubuntu Touch consume less power than Android? [closed]

One of the problems of new OSs is power consumption. That is because power and performance requires a lot of tweaks and experience with the kernel, drivers and OS code-base on one hand, and a lot of ...
0
votes
1answer
66 views

Ubuntu Server performance boost

Is there any way to boost an Ubuntu Server's performance? I feel it a bit laggy when hosting a game server on it, unlike other servers. Do you think installing a desktop environment will decrease the ...
0
votes
0answers
92 views

Extremely poor performance after graphics card upgrade

I have an AMD a10-5800k APU that I was using for graphics because it has integrated graphics. Knowing that I can't use AMD Dual Graphics on Linux, I got a dedicated card anyway because I can use Dual ...
0
votes
0answers
594 views

High CPU load - Ubuntu 14.04

I noticed that sometimes when browsing (with other processes in the background), I get very high CPU load for the browser process (over 100%) and the computer becomes really slow. I tried switching ...
0
votes
1answer
318 views

What broke Firefox? After upgrade to 14.04 Firefox plugin-container eats 179% CPU

After my recent upgrade from 13.10 to 14.04 Firefox plugin-container eats 179% CPU, even after disabling all plugins and restarting the browser. Before the upgrade I did not have this problem, though ...
1
vote
0answers
62 views

Former Windows XP systems are slow after installing 14.04

I just replaced windows XP on our work computer with Ubuntu 14.04 32-bit, and it runs really slowly, only after logging into an account and the screen sometimes flashes. It doesn't fill the whole ...
0
votes
0answers
263 views

WIFI performance poor on lenovo X201 running Ubuntu 14.04

I am running the latest Ubuntu on a Lenovo thinkpad X201, but noticed that the networking with wireless was performing poorly. To confirm that it was not the router or any other external source of the ...
2
votes
1answer
1k 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 ...
0
votes
2answers
539 views

Improve Ubuntu 14.04 LTS video performance

System info: $ lspci 01:00.0 VGA compatible controller: NVIDIA Corporation NV44 [GeForce 6500] (rev a1) $ free -m total used free shared buffers cached Mem: ...
0
votes
0answers
123 views

“not authorized to perform operation” message in Xfce remote desktop

On ubuntu 14.04 i installed Xfce to maker remote desktop working. when i rdp to the machine and while performing some tasks like mounting removable usb media I get "not authorized to perform ...
1
vote
0answers
39 views

How to fix System Settings window lag

I wanted to open System Settings window and I waited ~30s. Then the window was opened. My machine has an Intel Core i7 processor and 16GB RAM. What produces a lag in opening System Settings? How can ...
0
votes
0answers
78 views

Youtube is playing at the wrong speed - maybe soundcard related

In the last couple of days I noticed that videos on Youtube and the Artistworks music school were playing slower than they should. I've checked this in Firefox and Chrome. Chrome is using html5 on ...
0
votes
2answers
149 views

Slow performance while opening applications [closed]

I moved from Win 8.1 64bit to Ubuntu 14.04 64 bit with a fresh install from DVD. Everything is moving slow with performance. Graphics is fair, but when I say performance I mean, an average to open any ...
1
vote
1answer
249 views

Gradle compiling slows down my computer

The responsiveness is really bad on a newly installed Ubuntu 14.04 LTS. Here's the specs of my laptop: Quadcore Intel i7-4600U CPU @ 2.10GHz 12GB Ram 1TB Samsung EVO SSD And when gradle is ...
0
votes
0answers
68 views

surface pro/micro SD performance comparison question

I installed Ubuntu 14.04 on my microsd. I put / on 15 gig partition and /boot on 1 gig partition on the hard drive. Memory never gets past 2 gig but I created a swap just because. I can't figure ...
1
vote
0answers
23 views

Ubuntu won't finish booting

So I have a Windows 8 PC that also can run Ubuntu (my computer is a Dell Inspiron) but every time I try to run Ubuntu it takes about 2 minutes and then shuts off my computer. I don't understand why. ...
0
votes
1answer
71 views

can i install Ubuntu14.04 in my ideapad? [duplicate]

i'm using ubuntu 12.04 64 bit version in my Lenovo S100 ideapad. my ideapad is having 2GB RAM and Atom processor.Is there any performance and speed problems will occur if i change my OS to 14.04?
0
votes
0answers
358 views

Ubuntu 14.04 sluggish performance

I have a very recently build gaming rig and i installed ubuntu 14.04 on it because i hated windows 8. The problems that i am having are weird sluggish performance when dragging windows or selecting ...
1
vote
0answers
157 views

12.04 to 14.04 update slows down the system

I recently updated from 12.04 to 14.04 LTS. But the system is very slow. Everything works, but slowly. What could be the reason?. I have 4GB RAM, 10GB swap space and 300 GB of hard disk. Also the ...
1
vote
3answers
161 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 ...
0
votes
1answer
36 views

How does mounting (or unmounting) a partition affect the performance of the system?

Just curious to know: how does mounting (or unmounting) a partition affect the performance of the system? I have a fairly large partition where have stored backups, software and old files that I ...
-1
votes
1answer
62 views

Does Ubuntu 14.04 LTS work with only 736MB of RAM? [duplicate]

I want to install it on my old desktop PC. here is it's specs: CPU: Intel Pentium 4@2.4GHz RAM: 736 MB VRAM: 256MB HDD: 120GB I can install the following OSes on it: Windows Vista Home Basic ...
5
votes
1answer
511 views

Whole system freezes, even TTY does not work [closed]

I upgraded from 13.10 to 14.04 and now after a while the complete OS freezes. I can't even go into TTY1 - TTY6. I have to use REISUB to restart my machine. Most of the time, it freezes when I use ...
0
votes
0answers
48 views

Different performance graphics cards

I have installed Windows 8.1 update 1 and Ubuntu 14.04 on my laptop HP ProBook 450 (with i5 and AMD HD 8750). I'm playing Dota 2. With the same settings in Windows and in Ubuntu, I get different ...
1
vote
1answer
222 views

Virtual machine running painfully slow

I am running Ubuntu 14.04, and I've installed windows 8 on virtualbox. The problem is that it is too slow - even minimizing a windows takes 2-3 seconds. The reason I think this is a problem is ...
0
votes
0answers
96 views

intel_powerclamp: Start/Stop forced idle injection

I do not really knows when it started, i just upgraded from 13.10 to 14.04 and was about to do something about graphics performances (unity felt sluggish). That situation already lasted for 6 months I ...
0
votes
0answers
275 views

Video card Radeon HD 7770 bad performance using power point running presentation

my problem started after i installed ubunutu 14.04, when i was with ubuntu 13.10 i configured my video card with FGLRX working perfectly. But know when i install any of the both alternative of FGLRX ...
3
votes
1answer
2k views

Ubuntu 14.04 just update and very slow

So I just updated from Ubuntu 13.10 to 14.04, and I noticed that my system (specifically animations and videos) are very slow. I disabled the animations, which helped. But its still working very slow, ...
2
votes
1answer
38 views

Mouse slow proportionally to network usage

Under ANY network loading the Logitech mouse gets slow. At download speeds of as low as 50KB/s, clicks are "grabby," a click will pick up an object and any movement will move it around. At rates above ...
0
votes
3answers
151 views

ubuntu 13.10 performance for 1 GB machine

I installed Ubuntu 13.10 to my desktop which has 1 GB main memory and AMD 64 bits CPU. It happens that the system freeze, applications not response sometimes and crashes a few times. I just learn ...
0
votes
0answers
28 views

Possible Memory Leak on Ubuntu 10.04 LTS [duplicate]

I am having an memory issue with one of my Ubuntu servers which is running as a VM through VMware ESXi. The servers primary function is an email server, running Sendmail and Dovecot, with Squirrelmail ...
0
votes
1answer
61 views

Ubuntu 12.04 LTS Runs Slow

I am new ubuntu user. I am using ubuntu for web development. For that i have installed XAMPP for Linux,Ubuntu and Chromium Browser. But i dont know why it is too much slow. Help is needed. Thank ...
0
votes
0answers
60 views

OpenGl, Hot swap on and off to boost performance

So, I have and Amd Radeon Card 8xxx Series and runs games beautifully on my windows partition, If it weren't for the fact the my steam account wasn't mostly windows only games i would have done a ...