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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49
votes
4answers
54k views

How can I measure the execution time of a terminal process?

I'm trying to measure the execution time of a process that I call via the command line (i.e., I want to find out how long it takes to for the process to finish). Is there any command that I can add to ...
0
votes
0answers
53 views

CPU frequency is always at minimum, even if CPU isage is 100%

I don't know when this issue began to happen, it might have been since the time I installed Ubuntu (16.04, fresh). I was observing that Ubuntu was unusually slow, environment was choppy and CPU usage ...
1
vote
0answers
25 views

ubuntu is slow after xrandr with 2x2 scale

I recently bought a Dell XPS which comes with HighDpi resolution (3200x1800). For some reason, when I extend my laptop screen to another monitor (1920x1800) all things on this second monitor get ...
2
votes
1answer
371 views

Gnome 3.18 Activities overview and application list very slow with Ubuntu 15.10

Ok, any help would be great: After updating to 15.10 and Gnome 3.18, the activities overview has become very unresponsive. Arranging windows from desktop to desktop is slow and when opening and ...
4
votes
0answers
49 views

Degraded performance when upgrading from 10.04 to 12.04 and 14.04 [closed]

Our issue is the difference in performance observed when upgrading from Ubuntu 10.04 to 12.04 and 14.04. We've done some simple reproducible tests that show that even Vanilla Ubuntu 10.04 instances ...
129
votes
6answers
150k views

How to empty swap if there is free RAM?

When I open a RAM-intensive app (VirtualBox set at 2GB of RAM), some swap space is generally used, depending on what else I have open at the time. However, when I quit that last application, the 2GB ...
1
vote
0answers
27 views

Ubuntu 12.04.5 LTS unbearably slow after entering passphrase for WiFi

I've installed Ubuntu 12.04.5 LTS on an (quite old) IBM ThinkPad T40. Connecting to the internet using LAN works perfectly fine, but as soon as I "Enable Wireless" in the Network Manager, choose a (...
1
vote
2answers
72 views

Which Ubuntu flavor? [closed]

I have a HP 255 G3 (specs can be found here) And I can't decide what Ubuntu flavor to install into it, vanilla, Gnome or Lubuntu, because I don't know the core differences in them. (The DE differences ...
0
votes
0answers
14 views

Ubuntu14.04 freezing up for no apparent reason

I'll be using my machine for anywhere from minutes to hours and eventually my computer will lock up. The interesting part is that my music keeps playing. I've tried every hotkey I can think of and I ...
21
votes
4answers
26k views

How do I monitor disk activity on a specific drive?

I'd like to watch disk activity on my USB external hard drive. I know that I can use iotop to monitor disk I/O for each running process, but is there a way to get a measure per filesystem?
50
votes
11answers
32k views

How can I strip down Ubuntu?

I'm trying to fix what I consider a bloated install of Ubuntu. When I install Ubuntu on a machine, I get things that I don't want - web browsers, office applications, media players, accessibility ...
2
votes
1answer
46 views

Fresh ubuntu is extremely laggy

I'm running a fresh install of Ubuntu 16.04 on my desktop. It's an i7 processor with 16gb ram and (two) GeForce GTX 560 Ti graphic cards. I'm also running it on a new 34" with 3440x1440. The whole ...
-1
votes
3answers
29 views

Is there a difference in performance between Ubuntu-only computer and Ubuntu installed on a Windows machine?

I mostly work with Ubuntu, but most computers available in my workplace come with Windows 7 or 8 or 10 already installed. I can either install Ubuntu in addition to Windows, or install Ubuntu after ...
3
votes
3answers
10k views

How to set cpufreq governor to performance?

I am on Ubuntu 13.04 64-bit. I have heard that setting the cpufreq governor to performance will, well, increase performance. Unfortunately, I am a bit of a newbie at this sort of thing, and I am not ...
1
vote
0answers
16 views

Unusual performance of libblas-dev on Unbuntu 14.04

The package libblas-dev seems to have unusual performance (much faster) in some cases in the following question. http://stackoverflow.com/questions/38042451/cblas-gemm-time-dependent-on-input-matrix-...
0
votes
1answer
57 views

Do I need to install Vulkan for better performance?

afaik Vulkan is like DirectX. Will installing it be "like a drivers upgrade" for my system? I mean will my gaming performance be better? Some say it wouldn't and it's just intended for developers. ......
0
votes
2answers
208 views

Ubuntu 16.04 running extremely slow, is my system just too old?

I am new to Linux, the main reason I am wanting to use it is to revitalize some older laptops I have. Mainly just for web browsing and some document creation. I installed Ubuntu 16.04 yesterday on an ...
3
votes
1answer
68 views

CPUs are overused with internet browsers, maybe Ubuntu+i5+JS don's work well

I'm having trouble with the Ubuntu 14.04 on PCs Intel NUC i5 8 GB RAM SSD HD. They are used mostly with Google Spreadhseets and are high usage of internet browsers and JS applications. PCs are quite ...
1
vote
1answer
67 views

How to use available RAM? [closed]

My computer running Ubuntu 16.04 has 32GB RAM, but even on heavy tasks, rarely over 8GB is consumed. I wonder if is possible to tell Ubuntu to use more RAM to speed up the process. Moreover, after a ...
2
votes
0answers
67 views

Ubuntu slow booting - 'sendmail.service' takes over a minute to load

My ubuntu is booting very slowly. I'll show here excerpts from dmesg where the difference in boot time is larger than one second. Which one of these entries is significant, and which is not? (In ...
0
votes
0answers
271 views

VMware workstation on Ubuntu 16.04 is slow

Before that my laptop had Windows 10 and VMware workstation 12 installed and it did run very well. But when I installed Ubuntu 16.04 and VMware in it, the performance is not good. VMware is lagging ...
0
votes
1answer
245 views

My Ubuntu 16.04 is running very slow

I am using Ubuntu 16.04-i386 and I've been facing this issue from last few hours, I was trying to install Valgrind (Memory check tool) in my Ubuntu, so I installed the package from the website. I ...
1
vote
0answers
26 views

Program stutters when mouse is still [closed]

The solution can be found on StackOverflow I'm trying to write a program in Java, using Eclipse. I'm on Ubuntu 16.04. The program runs smoothly while I'm moving the mouse cursor. As soon as I stop ...
10
votes
4answers
18k views

What SSD optimization are needed on latest Ubuntu version?

I have read of a lot of questions about SSD optimization (How do I optimize the OS for SSDs?, Installing Ubuntu on a SSD, I'm confused about SSD optimization, etc...). Most of those questions seem ...
2
votes
0answers
111 views

Ubuntu 16.04 kills session when resource usage is extremely high

I'm working on project in hadoop on my computer. When I start some job consuming most of the available resources (100% CPU, high RAM usage) 'something' kills my user's session and all its processes. ...
27
votes
8answers
29k views

Is it normal for compiz to consume 40% of my CPU with no other programs running?

When I have no other programs running, compiz takes up at least 40% of my CPU. Is this normal? If it is normal, is there anyway I could make this program take a smaller percentage?
3
votes
4answers
125 views

Is there a way to increase performance by reducing image quality?

I'm using Lubuntu on a reasonably OK notebook (Fujitsu Siemens w/ 2GB RAM). Still, browsing the INTERNET is a test of patience. Although there is no dedicated graphics card, I would've expected more. ...
1
vote
1answer
588 views

Ubuntu 16.04 is slow and lags

I am running Ubuntu 16.04 on my laptop HP Pavilion G6 2320tx. The specs are: i5 processor 4 GB RAM Radeon graphics 7670m After using it for 10-15 minutes, everything starts lagging. Clicking ...
0
votes
2answers
4k views

What services are safe to disable?

I'm configuring my own server, running Ubuntu 13.04. I'd like to speed up the OS a bit more by removing ‘unnecessary’ system services. Here is what I did: Install and start rcconf to check what ...
1
vote
1answer
44 views

Can Ubuntu utilize a i7(4 core)?

My pc has 8 Gb ram with a intel i7(4 core - logical 8) processor and NVIDIA GeForce GT 610 (2GB) graphics card. One of my friend told me that Ubuntu or any linux distribution can not utilize this ...
1
vote
3answers
38 views

Ubuntu acting slow. Does size of partition affect performance? If yes how do i make the partition bigger. If no then how do I make it less laggy [closed]

I just installed Ubuntu alongside Windows XP and it is acting really slow. Before I installed, I made the partition 20 gigabytes. Does the size of the partition affect the performance? If so, how do I ...
1
vote
0answers
80 views

14.04 to 16.04 upgrade : Huge slowdown, why?

I have an older laptop with 2GB RAM. I have been running Kubuntu 32-bit installations for a number of years. I decided to move from 14.04 to 16.04. I had the option of 32-bit or 64-bit. I do have the ...
0
votes
0answers
19 views

How can I improve my Z800 performance using Ubuntu?

I have been a Mac user until very recently when I decided to buy a new Desktop computer. Since I am mostly interested in bioinformatic work such as genomes and transcriptome analysis, the computer I ...
0
votes
0answers
63 views

Slow Ubuntu 14.04 LTS on Dell PowerEdge R220

We installed Ubuntu 14.04 LTS 64-bit on Dell PowerEdge R220 server but the system is really slow. Do you know whether this is because of a missing driver or it is something else ? Memory: 3.7 GiB ...
0
votes
0answers
25 views

I/O Performance on my mounted drive is extremely poor

I have a windows 7 machine. I have installed Oracle Sun Virtual Box here. On this Virtual Box I have Ubuntu 14.04.2 LTS installed. I have mounted a remote windows network share in my ubuntu using ...
1
vote
2answers
460 views

Why does my computer run slower on ubuntu than on Windows?

I recently installed Ubuntu and am multi-booting with Windows 7, but I would like to switch over to Linux full time. Now I am seeing that it runs a lot slower; I have a few examples: I've tried ...
0
votes
3answers
71 views

Do I need to clear out swap to make my computer fast again?

I ran a process which used up mostly all my RAM and Swap... I was forced to kill the process, but now I see something strange, my Swap usage has decreased a little bit, but it is still half used while ...
9
votes
7answers
4k views

Firefox Slow Performance

I have to say, firefox on ubuntu's performance is attrocious. Very quickly it gets into 100% cpu use (thank god I have multiple cores) and hundreds of megs of ram. Even closing tabs does not help the ...
0
votes
1answer
198 views

Ubuntu with KDE and kernel 3.6.2 - performance issues

I have recently swiched to Ubuntu and installed KDE on it. I like software included in Ubuntu but interface from Kubuntu. My problem is, that after installation of Linux kernel 3.6.2 (default Ubuntu ...
0
votes
0answers
36 views

Java based application is really slow

I am using Ubuntu 16.04. I have a big problem with java based application. When I use java based application, the application always become really slow. The application I used are Cytoscape and ...
0
votes
0answers
32 views

How much will installing Macbuntu affect the performance of a low-spec system running Lubuntu?

How much will this theme affect performance on Lubuntu 16.04? The system in question has limited hardware. Intel Atom 1.66 GHz dual core, 1GB RAM. Will the performance impact be so small as to be ...
1
vote
3answers
172 views

Only 1 GB of RAM. Should I go for 32-bit Lubuntu, or 64-bit?

I know this has been explained very well in general, but I want to ask for advice on this particular situation. I hope it's not considered a duplicate. My friend has this old netbook with only 1 GB ...
3
votes
3answers
6k views

Poor IO performance - PCIe NVMe Samsung 950 pro

I just finished a hardware build expecting a big gain from the new NVMe drive. My prior performance was lower than expected (~3gb transferred), so I've replaced the motherboard/cpu/memory/hdd. While ...
16
votes
4answers
8k views

How to diagnose Ubuntu CPU spikes / IO wait?

I'm using Ubuntu and every couple minutes it goes unresponsive for a half second to a full second, which isn't normally a problem but makes trying to code extremely frustrating when your trying to hit ...
1
vote
0answers
122 views

Slow Performance 16.04LTS

Today I installed ubuntu 16.04 LTS in my laptop. I realized that even without having anything installed and my apt already updated, it features slow and loud noise coming from the hard drive, like ...
0
votes
0answers
43 views

Terrible performance

The pc is very slow when I turn it on, but when I restart it then it works normally without bad performance. I tried many distributions and all have this problem. I have a Toshiba C855D-S5307 with ...
0
votes
0answers
16 views

Regarding TTFB and CPU utilization relation

I have quick question regarding TTFB and CPU utilization time in waterfall chart. Is there any way to reduce TTFB in front end side? And would CPU utilization will affect rendering or any performance ...
-1
votes
1answer
258 views

Virtual GPU for Ubuntu 16.04 Clients on VirtualBox

Assuming the host OS has a GPU, can anybody tell me if Ubuntu 16.04 clients run using VirtualBox will be able to make use of the GPU through virtualization? I read that GPU virtualization is only ...
8
votes
7answers
16k views

Will installing Ubuntu to dual boot with Windows slow down any OS or my laptop?

I am going to install Ubuntu to dual boot with Windows 8 soon, but one of my friends warned me that partitioning my hard drive will slow my computer down. I run on a 500GB HDD and 8GB of ram if that ...
12
votes
2answers
21k views

VNC session very slow in 12.04 compared to older versions

I have a 12.04 X64 Desktop install on a machine where I previously had 10.10. Previously I've used both the built-in vino and tightvncserver to provide the VNC session. I connect to them using Chicken ...