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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6
votes
1answer
2k views

Is it possible to use both SLI and two monitors at the same time on Ubuntu with Nvidia?

I'm completely and utterly baffled by my inability to use both SLI and a dual monitor setup, even with Nvidia's latest proprietary drivers. Now I have to choose between the ergonomic and productive ...
5
votes
1answer
605 views

Why does Lubuntu automatically reset my CPU into performance mode after a short time?

If I put the CPU mode into powersave or ondemand, it works for some time (5-10 minutes) but after that time Lubuntu automatically sets the CPU to performance mode. (I see it doing sudo cat ...
4
votes
1answer
466 views

Incredibly bad M.2 SSD performance (HP OMEN with Samsung XP941)

I have a new laptop (HP Omen) and have just, after great trials and tribulations, installed Kubuntu on it. The install is a dualboot install along with the factory Win8.1 installation using EFI mode. ...
4
votes
1answer
173 views

What processes should be ioniced for a responsive desktop?

My goal is to intelligently and permanently ionice the processes on my desktop for responsiveness under heavy disk and network load. By permanently, I mean that any changes made to the system will ...
3
votes
1answer
1k views

Why are all hard drives slow on my Ubuntu system?

On my computer, which dual-boots Ubuntu 12.04 LTS (kernel 3.5) and Windows 7, the hard drive speed is very fast on Windows but very slow on Ubuntu. The slowness remains when I boot on an Ubuntu Live ...
2
votes
1answer
85 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 ...
2
votes
1answer
113 views

Performance improvement of Ubuntu on soc board

I am trying to set up Ubuntu on soc board (Cubietruck) which has 8Gb flash, 2 Gb Ram, with external SSD - 128 GB. Currently I have installed the Ubuntu on hard drive. Its performance seems moderate ...
0
votes
0answers
30 views

Graphics Performance

My system specifications are Intel Core i5 2500; NVIDIA GeForce 520GT and I am running Windows and Ubuntu 14.04 as dual-boot . I prefer to use Ubuntu, but the Gaming Performance (Minecraft) is better ...
0
votes
0answers
34 views

Java algorithm performance difference between Linux and Windows

We observe a very significant performance difference of an algorithm in java between Linux (ubuntu) and Windows. The difference is 3x-4x in favor of Windows. Test machine is i3770 quad core (8 logical ...
0
votes
0answers
54 views

Ubuntu 14.04.2 is acting really glitchy and frequently has severe lags and has graphical bugs

Programs will dim and not respond after a while. Opening programs make the screen bug out. Is there a way to fix this without having to reinstall from USB/CD.
0
votes
0answers
33 views

Slow Chromebook Acer C710-2847 after 14.04 LTS upgrade

My Acer C710-2847 laptop is slow after upgrading to 14.04 LTS. I tried to watch a movie downloaded on it and it was just like a "Slow Motion" movie while it was fine before upgrading. I also usually ...
0
votes
0answers
24 views

After I installed UFW ssh login very slow

I'm wondering if I made a mistake or if this is the normal case. I turned off password based ssh login and changed it to RSA key exchange. After that I changed the ssh port and then I installed UFW. I ...
0
votes
0answers
49 views

VMware Performance Problems

I've installed Ubuntu 14.04.1 as a virtual machine (VMWare Player 6.0.5 build- 2443746), and it's performing terribly. My host machine is a Core2Duo (E6550) @ 2.33Ghz<br/> 4Gb RAM<br/> ...
0
votes
0answers
19 views

@reboot in crontab could increase the startup time?

I have a script that updates my ip address in the DNS server. Sometimes this script takes 3 or 4 secs to run. I want to know if the script execution time could increase the total startup time of my ...
0
votes
0answers
193 views

Performance Problem Nvidia GPU

I would like to understand why my Nvidia GTX 660M on Ubuntu 14.04 LTS 64X is running slow and eventually speed it up: So, I installed the NVidia proprietary driver: dpkg --get-selections | grep ...
0
votes
0answers
127 views

Why bumblebee is 5 times slower than nvidia driver?

I have a laptop with Intel Core i5 CPU and Nvidia GeForce GT 640M discrete graphic with optimus technology. I have managed to install bumblebee with nvidia-311 driver on my ubuntu 14.04. The problem ...
0
votes
0answers
113 views

ubuntu 14.04 working slow and hanging lenovo flex2 14

ive been using ubuntu since 7.04 and i've had it on many machines, i was always very happy with the responsivness of the OS compared to windows on the same machine. last week i got a new lenovo flex ...
0
votes
0answers
375 views

Stuttering and slow graphics in Ubuntu Gnome 14.10

I recently installed Ubuntu Gnome 14.10 and every time there are 2 or more applications windows open everything lags(especially the activity overview and when chrome or rhythmnox is open). It's a HP ...
0
votes
0answers
40 views

Slow performance on good hardware? 12.04

I am experiencing slow performance on good hardware, here are my specs: Ubuntu 14.04 LTS Memory: 8 GiG (7.7 Usable) Processor: IntelCore i5-3210M CPU @ 2.50GHz x 4 Graphics: Intel Ivybridge Mobile OS ...
0
votes
0answers
82 views

How to increase Graphics peformance in Ubuntu 14.04 running as a guest in VIirtual Box?

I'm relatively new to Linux, I have played around with Ubuntu for 6 months but not a Linux Expert so please try helping in newbie terms I have Ubuntu 14.04 Running as a Guest in a Windows8.1 Host ...
0
votes
0answers
90 views

Lagging performance on Lenovo E530 running 14.04

I'm having persistent lagging problems on a Lenovo Thinkpad E530 currently running 14.04 but have also had them with 13.10. The system has a an i3 processor, 4GB RAM, 500GB Toshiba SATA-3 HDD and an ...
0
votes
0answers
81 views

Why is my read speed limited to 40 MB/s (< 25 %) reading from ext4 when compress-force is zlib and there's no CPU usage?

I'm moving data from an ext4 filesystem on a HDD connected with USB 3.0 which usually reads and writes with 170 MB/s to a btrfs subvolume on a SSD which usually reads and writes with 360 MB/s with ...
0
votes
0answers
58 views

Kernel Tuning Tools?

How to improve performance of a Kernel ? Are there any tuning tools to improve Kernel performance ? Thank you.
0
votes
0answers
97 views

Ubuntu running slowly after accidentally filling hard disk

Ubuntu 14.04 Several days ago, I was running a program which creates large text files and accidentally filled the hard drive. Ubuntu seemed to be doing just fine. The process was still running, and ...
0
votes
0answers
34 views

Sudden sluggish performance of ubuntu system

since 3 days a very important system at my workplace started a most peculiar behavior. There is no internet connection on that PC and no updates have been made. When I started the PC 3 days ago after ...
0
votes
0answers
26 views

How to: autocreation of system performance / health log?

I want my system to create file with a history entries filled by: exact time CPU, GPU, HDD temperatures network total up/down bytes RAM and swap % usage Less important: CPU, GPU, HDD loads ...
0
votes
0answers
92 views

ATI Graphics Card Problem

I have some problems with my graphics card. I am using Ubuntu 14.04.1 64-bit and I installed my graphics card without any problem, but when I open the ATI Control Panel, it always shows it's in the ...
0
votes
0answers
50 views

Shutter very slow and laggy?

Shutter is very slow and laggy and I'm not sure why. I've tried to change settings to "Do not save file automatically" and "Do not copy anything to clipboard" but it's still incredibly slow. I have it ...
0
votes
0answers
40 views

Very poor performance after regular updates

Recently my install of 13.10 decided to go all wonky on me. It did some kind of system update and then I got that lovely black screen after on boot. After many efforts to fix it I did a dirty upgrade ...
0
votes
0answers
20 views

How can I log per-process resource usage?

I am encountering a reproducible system slowdown when I perform a given action on the desktop. I have observed some odd behaviour running top and iotop in separate TTYs. How can I log resource usage ...
0
votes
0answers
59 views

Can't install Ubuntu 12.04 32bits on a modern PC - So slow!

I'm working on a project that only works on Ubuntu 12.04 32 bits. I've been given a modern computer to work with but the installation of Ubuntu is driving me nuts. The machine specs are: MoBo: ...
0
votes
0answers
131 views

Ubuntu 14.04 Not recognizing GPU, EXTREMELY slow performance

I recently installed Ubuntu 14,04 on my Compaq Presario CQ62 laptop. Specs: 4GB 1600 MhZ DDR3 RAM Ati Mobility Radeon HD 4250 GPU AMD V120 CPU, 1 Core, 2200 MhZ I have installed Ubuntu using the ...
0
votes
0answers
95 views

Kubuntu is significantly slow to start some of the programs in X window

I have Kubuntu 14.04. There is no performance problems other than this. Since the installation of the OS some programs like Dolphin, Gweview, Dragon Player and Muon Discover take a couple of minutes ...
0
votes
0answers
204 views

LibreOffice (Calc) consumes all of the available RAM memory

I am having problems with LibreOffice's memory consumption. It didn't change much since 12.04 - I have tested it in Ubuntu 12.04, 13.04, 13.10 and 14.04 and didn't notice any significant differences. ...
0
votes
0answers
307 views

Ubuntu behaving very slowly: 2 hr boot time (ata1 hard resetting link / device reported invalid CHS sector 0)

I have a fresh install of ubuntu 14.04 as a dual boot with windows 8.1 on my HP Pavillion laptop. The windows 8 partition works fine (i.e. boots quickly, performs well etc). The Ubuntu partition is a ...
0
votes
0answers
164 views

Configure samba to fully use a gigabit connection

Is there a way to configure Samba in a way so that it can actually fully use a gigabit LAN connection when only performing a single big (>10GB) file transfer? On several Ubuntu servers in several ...
0
votes
0answers
56 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 ...
0
votes
0answers
336 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 ...
0
votes
0answers
123 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
942 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
0answers
362 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 ...
0
votes
0answers
225 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
0answers
77 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 ...
0
votes
0answers
558 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 ...
0
votes
0answers
60 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 ...
0
votes
0answers
331 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 ...
0
votes
0answers
99 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 ...
0
votes
0answers
97 views

Improve performance etc for full-disk-encrypted drives

I have an old laptop (AMD A6-3420M APU) running Ubuntu 13.10 in wubi. On this laptop I use VirtualBox to run an an Ubuntu 12.04 VM. The Ubuntu 12.04 image has full disk encryption and home folder ...
0
votes
0answers
139 views

Sometimes my Ubuntu 13.10 is slow and the mouse leaves a trail, on a high end PC

I'm using a gaming PC but Ubuntu randomly boots slow. I mean if it's slow, it's slow all the time until I restart. If it's fast, it's fast all the time until I restart. I have tried installing the ...
0
votes
0answers
243 views

More than FOUR minutes to boot up my Ubuntu 12.04. What could be the problem?

I cannot tell exactly when this happened, but surely after upgrading to Ubuntu 12.04, but on my last bootup it lasted from selecting the distro on the GRUB menu to full usability 4 minutes 22 seconds ...