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
1k 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
569 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
1k views

What is the performance difference between booting Ubuntu from a USB v2 and USB v3?

I like the idea of booting from a usb drive. I probably have 50 USB 2.0 drives of various sizes, but I only have 2 USB 3.0 drives currently. If I boot from a USB 3.0, will the increased read/write ...
4
votes
1answer
159 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 ...
0
votes
0answers
124 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
83 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
330 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
191 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 ...
0
votes
0answers
169 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
69 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 ...
0
votes
0answers
64 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
60 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
284 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
46 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
76 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
199 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
50 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
176 views

Samba performance with NAS

My question is simple : how to get the maximum performance with Samba shares with NAS. Here is my smb.conf file : # # Sample configuration file for the Samba suite for Debian GNU/Linux. # # # This ...
0
votes
0answers
29 views

Does the installation of different OSs in the same machine reduce the performance of it?

I'm trying to install Ubuntu on my computer based on Windows 7 SP1. Does the installation of different OSs in the same machine reduce the performance of it? What about of my case? Thanks a lot!
0
votes
0answers
32 views

Ubuntu 13.10 ultra sluggish

I installed Ubuntu 13.10 a week ago, and have installed it three times since. The reason: Every time I installed it. With all updates. Just restricted extras. 3.Nothing but the system, I got a ...
0
votes
0answers
75 views

IPSec Offload support in 82576GB controller for Linux

Due to migration of servers to cloud computing, we bought several NICs that support mechanisms like SRIOV and VMDQ. Furthermore, as security risk was also a concern and we did not want to create more ...
0
votes
0answers
60 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
91 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
117 views

Very Slow SDXC Card Read/Writes

Recently took my laptop which had Windows 7 on it and did a fresh install of Ubuntu 12.04.4 64 Bit. The laptop has a 128GB Class 10 Kingston SDXC card installed. I used the card in Windows without any ...
0
votes
0answers
122 views

Ubuntu 12.04 Sever is running slow and not using full ram

I have a ubuntu VM of 12.04 server virsion and it is running on centos. VM have 8GB of RAM and 1 core processor for it. I amd running following application on it hadoop 1.0.4 hbase-0.94.12 ...
0
votes
0answers
20 views

Laptop is very slow if its not using power cable

So if I only use laptops battery my laptop is very very slow. And when I use power cable there is no problems. Is there a some powersaving or something and how can I fix it?
0
votes
0answers
95 views

Numerical performance of Intel's 4th generation vs 3rd generation cpu's on ThinkPad

Maybe a stupid question, but any feedback would be appreciated! I just purchased a new pc in order to run the latest Haswell cpu on some numerical benchmarks. To my surprise, I found that the exact ...
0
votes
0answers
127 views

Fix Slow Graphics Performance on Ubuntu 13.04

I'm using Ubuntu 13.04 slow performance. Then I upgraded the OS but graphics card was not starting at low level. my system config.... Memory 2.0Gib Processor AMD Athlon(tm) 64 X2 Dual Core ...
0
votes
0answers
65 views

Ubuntu Touch phones/tablets as a desktop/laptop replacement

I read that Ubuntu Touch in docking mode will share the phone usb port to transfer video and audio to an HDMI monitor, usb devices data like keyboards, mouse and maybe external hard drives and ...
0
votes
0answers
12 views

stop ubuntu polling during suspension

Problem is Ubuntu is continually polling for devices during suspension. These polling's take place on pcie devices my laptop doesn't connect devices to possibly. They are on a cpu which could have ...
0
votes
0answers
263 views

Ubuntu 13.10 extremely slow and laggy

i recently installed ubuntu 13.10 and its been extremely slow ever since. The annimation that appears when you open or close an application takes about 15-20 seconds to complete. I have searches the ...
0
votes
0answers
76 views

High Memeory usage on 12.04

System : Ubuntu 12.04.3 LTS (GNU/Linux 3.8.0-34-generic x86_64) I am using webmin to see the system since i am not a Linux Expert. Since last week there is an unusual memory usage in my system. Is ...
0
votes
0answers
48 views

ZFS ARC with zcache?

I installed Ububtu server as home NAS. NAS is using ZFS as filesystem on main data storage. MY understanding that ZFS uses plenty of memory for ARC. But I'm not sure if ARC acts as linux cache, and ...
0
votes
0answers
263 views

why firefox 25.0.1 tack high cpu usage?

While i update my firefox to 25.0.1 in my ubuntu 12.04, It tack a high usage of the cpu, and i have to close it and reopen it to solve it. this problem happened as when i update my firefox. In last ...
0
votes
0answers
299 views

I can't get Ubuntu Server 12.04/NginX to outperform Windows 2008 Server/IIS 7.5

I am determined to get NginX on Ubuntu Server 12.04 LTS to outperform IIS 7.5 on Windows 2008 Server. For comparison, I am using a Apache Bench and a simple (231 byte) html file. The Ubuntu server and ...
0
votes
0answers
205 views

Slow download rate hogging up the WiFi

tl;dr: On one computer, slow network connection consumes the entire bandwidth, affecting both internal wifi adapter and when browsing through a phone modem. comment: I posted this issue on Super ...
0
votes
0answers
77 views

Dmesg - mounting takes longer in Lubuntu than in Debian

As an optimization freak, I have noticed for a long time (and many different kernel versions 3.8-3.12) that booting Lubuntu seems to delay 5 seconds when mounting the system partition. [ 4.993151] ...
0
votes
0answers
126 views

Disable CPU rendering

I have a problem with the 3D Functions of Unity after the Upgrade to 13.10. I've got a ThinkPad R60 with Intel GMA950 Graphics. Low 3D performance, i know. But Unity worked well since 11.10. My ...
0
votes
0answers
29 views

Does kernel influences the performance greatly?

I'm now testing performance of an armel filesystem and armhf filesystem, which are of the same distribution, but different kernels. The performance of the memory of the two filesystems differs a lot. ...
0
votes
0answers
160 views

HP Pavilltion dv6-6051er ubuntu 13.10 (and previous versions) black screen after installing amd drivers

I have intel-amd hybrid graphics. Every time after trying to update to fglrx I'm getting black screen or some "low graphics mode", that hangs at some point. Is that even possible to get this working? ...
0
votes
0answers
48 views

A lot of lag on Ubuntu 12.10

So just recently I had to update to 12.10 because I had a problem with there being no dashboard only wallpaper when I would log in, so my question was answered and it was fixed. Now my computer has ...
0
votes
0answers
49 views

Software Center seems opened correctly, but disappeared suddenly after a second or two

I am trying to access Ubuntu software center to remove some app from my pc, but each time I tried to initiate Ubuntu Software Center, it appeared on the screen for 2 seconds then it disappeared ...
0
votes
0answers
41 views

mini.iso build up or break down from full OS?

I have an old portable computer that's only used as a 'music server' Rhythmbox. It was slow with 11.10, but I updated it to 12.04 anyhow. Then, I eliminated a number of things with Synaptic, leaving ...
0
votes
0answers
26 views

how to install linux-tools-3.5.0-030500

I installed kernel 3.5 from mainline using the procedure avaliable at http://ubuntuforums.org/showthread.php?p=11391743#post11391743 but when i tried to install perf, its asking for ...
0
votes
0answers
53 views

Installed ubuntu 12.10 will not access HD, extreemly slow, keyboard not working properly or mouse

I've just loaded Ubuntu onto my laptop, it had windows XP or 7 before.. It stopped working so I decided to re-install the OS and I went for Ubuntu to give Linux a go and maybe learn about programming ...
0
votes
0answers
173 views

NVIDIA driver fails after update on 12.04 using lenovo w520 laptop w/ quadro 1000m display driver

Im new to ubuntu and I am excited to start using it. I have been using it for a day now and am noticing that the OS is hanging a lot. I think this may be due to my display driver not being installed ...
0
votes
0answers
208 views

Ubuntu compatibility with new Apple Mac Pro hardware

Apple's new Mac Pro is being released this Fall. The hardware specs look great, but I also don't have enough understanding of hardware, hardware drivers, and linux kernel to make an educated guess as ...
0
votes
0answers
193 views

findout if my filesystem write operations are really deals with tmpfs or ssd on ubuntu

I bought a notebook with SSD drive and mounted all common system and user temp dirs to memory (to RAM) with tmpfs. This is the list of which dirs are placed in memory exactly (from fstab): none on ...
0
votes
0answers
92 views

Poor perfomance using 12.04

I installed Ubuntu 12.04 with all the updates needed from additional hardware and system in dual boot with Windows 7 to raise a little the performance of my PC. After installation, Ubuntu was slower ...