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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What are the consequences of disabling nmi_watchdog?

My aim was to improve battery life for my laptop. I have already applied advised modifications like enabling ALPM, and adding pcie_aspm=force drm.vblankoffdelay=1 i915.semaphores=1 at grub startup of ...
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25 views

Ubuntu very slow startup

My new laptop is taking very long (a few minutes) until it reaches the log-in screen. Here is the output of dmesg: http://pastebin.com/MuW79kVd I think the important part is the following gap in ...
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1answer
30 views

ubuntu 14.10 too slow to open VLC player

my ubuntu 14.10 is too slow .It takes about a min to open a video in VLC media player. Even other software are too slow to open. My Laptop is new & has high end specifications.
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1answer
21 views

Ubuntu 12.04 lags very bad at my laptop

So I recently decided to change from Windows XP to Ubuntu 12.04 on my crappy 1gb RAM & 1.6GHz laptop. The problem is that it lags A LOT. Like first 5 minutes I can use it fine but then it just ...
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1answer
23 views

Home Computer Build Designed For Optimized Performance With Ubuntu

Perhaps this is not a question for this forum, but I hope I can get some good info here. I currently dual-boot Ubuntu on a MacBook Pro. The OS performance is unreliable on my laptop, so I am hesitant ...
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2answers
41 views

Can I really experience performance in a LiveCD context?

I don't know exactly how LiveCD works, but I know that everything is happening on the RAM memory, so a great part of the RAM would be used by the OS itself. Can I really experience performance in a ...
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1answer
72 views

Slow/laggy system on a mid-end PC

I just moved from Windows 8.1 3 days ago (which was running very good in terms of performance and multi-tasking). I'm using Ubuntu 15.04 with KDE Plasma 5.3 installed and the system isn't fast as it ...
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2answers
74 views

Ubuntu 15.04 intalled on older computer is running slow [duplicate]

I just installed Ubuntu 15.04 on an older computer because it could not handle many of the features included with Windows Vista. I thought I would try Ubuntu to improve performance. However it isn't ...
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1answer
26 views

How can I improve my system performance?? As it is working very slow [duplicate]

I have Dell Inspiron N4050 i5 2gb. Am running dual boot (Ubuntu 14.04 along with Win7). As I am a new user (more specifically learner). In Ubuntu am facing several issue regarding the performance. ...
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14 views

Loading of applications in ubuntu freeze my system for a while

I have a very powerful ubuntu system with core i3 4370 processor and it works very fast, but it seems it's bottleneck is in harddrive. This log review loading of my hard drive when I try to open ...
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107 views

Ubuntu Host in VirtualBox has long delays before startup

I run Ubuntu in virtualbox on a windows 8.1 host. After some updates of the guest, it started to have lags/delays before it starts. It also shows some warnings. After it starts, everything is fast. ...
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110 views

Vivid / Poor performance on Football Manager 2014

When I launch a new game, I only have one star for performance, even for 1 league only, despite a good configuration for this (i don't want 3D view of matches): Xubuntu Vivid x64 / Intel Celeron ...
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1answer
20 views

My Ubuntu on AWS is very slow

I have Ubuntu 14.04.1 install on AWS and it was getting slower and slower Not knowing what to do I updated and upgraded my system It did not help Testing disk usage (df -h) I get Filesystem ...
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17 views

Percona deb download via cloud init very slow

I'm trying to set up a Trusty instance via a cloud init file and the install process is stalling for a few minutes. When I tail the install output with tail -f /var/log/cloud-init-output.log, I see it ...
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1answer
34 views

Slow raid5 resync with WD Green drives [closed]

The Question Why is my initial resync so slow? Initially cat /proc/mdstat reported ~ 30000K/sec. I then increased /sys/block/md0/md/stripe_cache_size from 256 to 16384. That increased the speed to ...
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1answer
84 views

Automatic switching between performance and powersave mode on plugging in/out the power supply

Recently I've been trying to investigate why my laptop is so slow. I found out that it runs at ~600Mhz, regardless of the power supply being plugged in or not. Note that it's Intel i5-2540M nominally ...
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0answers
59 views

Why ubuntu runs so slow on my laptop? [duplicate]

I am running Ubuntu 15.04 but it is running very slow, a lot slower than windows 8.1. When I open a browser or file manager it takes 5-10 seconds before it opens, the system settings take 6 seconds to ...
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16 views

Why interface lags a lot when writing to disk and try play games

Ubuntu 14.10 with open drivers (not tested with catalyst) lag when I write data to external USB disk. And if I run Team Fortress 2 the interface lag hard - some mouse movements ignored, keyboard ...
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50 views

Slow performance Xubuntu 14.04 - Radeon HD6950

Im having slow video performance on my i5 with 16gb of Ram with a Radeon HD6950. Just installed the xubuntu, updated the system and when i open for example the Firefox or chrome, the video appears to ...
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1answer
60 views

Lubuntu on ASUS 1215

I have a ASUS Eee PC 1215P netbook (Seashell series) and liked to migrate from it's original MS-Windows 7 to Ubuntu/Lubuntu. There are documents on Ubuntu official website website which certifies that ...
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2answers
66 views

cpu is always at high consumption 50% - 90%, what can be checked for solving?

My platform: Host: Ubuntu 14.04.2 Virtualbox ubuntu 14.10. The cpu of the client 14.10 is always reach at high consumption, although no app running. After a start up, I launch nothing, the cpu is ...
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29 views

Ubuntu touch HTML5 performance

I made a simple cordova bootstrap HTML5 app and deployed it on a bq phone. When I open the top right page navigation menu it appears that the slide animation is very slow. The animation is rendered in ...
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39 views

How much use of swap space means that I should add more memory?

My system is slow and I am trying to figure out if I need more memory or a better system. I am using Ubuntu with 32 GB RAM. $ free total used free shared buffers ...
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18 views

Ubuntu Sometimes with slow graphics and locking

long time since I installed Ubuntu x64 on my machine (Del Inspiron 3421 with Intel graphics) always realized that the graphics were not working as well as they should, I used Ubuntu 4.12 LTS x64 and ...
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1answer
102 views

Worse compiz performance in Ubuntu 14.04LTS

I know this question has been asked multiple times before, but they seem to be like 3-4 years old now and I could not find any associated with Ubuntu 14.04. Also, solutions mentioned there do not ...
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27 views

Allocate disk space to partitions in a fresh install

I'm planing to do a fresh xubuntu install and am wondering about how I would best partition my hard drives, which are as follows: SSD - 128 GB HDD - 2 TB Right now, running ubuntu, I have the ...
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32 views

Performance of KVM on 32 Bit Ubuntu compared to 64 Bit?

Due to hardware failure, I recently grabbed a harddisk out of an old 32 bit machine and plugged it into a new 64 bit system - powered on, everything good, services outage minimised. Now I am planning ...
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19 views

Why is Ubuntu so slow? (I'm a new user) [duplicate]

I am new to Linux. It seems to be that Ubuntu is much slower than other Windows OS. Please show me how I can improve my computer's performance. Thank you very much in advance. Theo
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1answer
43 views

Setting to High Performance

When I had Windows 8.1, there was a power option for "High Performance" which allowed higher performance at the cost of power supply. Is there a way to set my power option to "High Performance" on ...
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1answer
31 views

how to check if zfs is using the kernel module

I am having perfomance troubles (transfer rates only about 50MB/s using 6 2TB server hdds WDC WD2003FYYS, each doing app 150 MB/s) with my raidz and was hoping to increase it with the ZFS on Linux ...
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31 views

Why is my system unbearably slow?

I have a Thinkpad Edge E430, Core i5 dual core, 4GB RAM, Ubuntu 14.04 64-bit. It is pretty common for my system to freeze in such a way that the mouse cursor still reacts, slowly, lagging - but ...
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39 views

Severe lag in Ubuntu 14.10

I am currently having a serious problem in Ubuntu 14.10. This morning when I booted into my computer, The UI of Ubuntu started to give me some serious lag. Normally the OS is perfectly fine, but every ...
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1answer
28 views

Any benefit to uninstalling unused applications?

I am a newcomer to Linux and after a few months of trying out different distros I have now settled on Ubuntu 14.10 on my aging HP TX2000 Notebook. One thing I am unsure of is if there is any benefit ...
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68 views

Speed up first launch time of some applications (in this case: filemanager, xfce panel addon)

I installed xubuntu-desktop on my Ubuntu 14.10 and now use its file manager Thunar and its panel addon application menu (link to its docs.xfce.org site). Both programs take extremely long to launch ...
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1answer
54 views

Recommanded step for Apache and mysql Performance tuning

I googling lots of sites and forums to solve issue but i didn't get result as my expectation. I installed successfully Ubuntu 14.04 LTS on ProLiant DL360 hardware with LAMP environment. Hardware ...
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1answer
45 views

Ubuntu performance drop

I upgraded to Ubuntu 14 and it seems im lagging. I started playing a 2d rpg game on steam and my whole pc is a bit sluggish. I read that I should use xubuntu or something. I'm on an intel HD processor ...
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1answer
83 views

Very slow Chromium browser

On my machine Chromium is very slow, I had to switch to Firefox where everything works fine. Looks like this is a kind of JavaScript problem (eg. slowed down typing on Facebook), pages loading slower, ...
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1answer
59 views

What can I do to restore disk performance on slower Ubuntu VM

I have Ubuntu 12.04 (x86) running under VMware Workstation 10.0.5 on a Windows 7 x64 host. Disk access in this VM is noticeably slow - it takes ages just to start Firefox, for example, and the disk ...
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63 views

Extremely poor performance in Ubuntu Server 12.04.5 LTS

I am trying to host a Minecraft server in Ubuntu Server 12.04.5 LTS. For some reason, my computer responds extremely slowly to any executed command or process. When starting up, it can take anywhere ...
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1answer
40 views

What is throttling multithreaded performance? [duplicate]

I installed Ubuntu 12.04.5 (64 bit) on a Dell T5500 with two Xeon 5650 6-core processors specifically to run the free DCP-o-matic software (http://dcpomatic.com/). The same machine used all 24 virtual ...
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35 views

Sandybridge irregular performance with GPU-intensive game

My laptop has a Sandybridge i3, specifically Intel® Core™ i3-2310M. The following condition occurs playing League of Legends using vanilla Wine from the PPA. I do not have a native game to compare, so ...
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1answer
54 views

Which subdirectories of / should have compression disabled in btrfs root filesystem?

Imagine you set up your root filesystem to be btrfs with Ubuntu 14.10 defaults (one subvolume for / and one for /home) and you want to compress and deduplicate as much as possible. Which directories ...
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1answer
62 views

Opening programs very slow on Ubuntu 14.10

When I open any program for first time after boot on my Ubuntu 14.10 it takes 8 second and more ! i think i have powerfull laptop with Intel® Core™ i7-3630QM CPU @ 2.40GHz & nvidia gt630M & ...
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1answer
95 views

Accessing tty1 through 6 takes unreasonably long

When I try to switch from the X session (tty7), it takes very long. Once in tty1-6, going to tty1-7 is instant. It feels as if the time a tty7 -> ttyX switch takes was a function: tty7 -> ttyX ...
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2answers
284 views

Enable full performance on Sandy Bridge laptop

I have 2nd gen Intel i7 laptop. I use Thermald and tlp for managing battery life (they are great!). However, sometimes I don't care about noise and power consumption, and want the CPU to run at full ...
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55 views

Samba performance on ubuntu server 14.10

I have a desktop machine with ubuntu server installed which I am converting to a docker repo + media server(using samba -no amahi/firefly etc bloatware). Earlier I was using windows 8.1 and while ...
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33 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 ...
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2answers
610 views

Ubuntu is very slow when Intel SpeedStep is enabled (CPU is not used in full speed)

I have a Dell notebook with i7 processor and Ubuntu 14.10. When i disable SpeedStep in my BIOS my computer is very fast but the fan runs very often and the battery gets empty fast. When I activate ...
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79 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 ...
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72 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.