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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-1
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0answers
46 views

Gnome Shell is slower than Unity? [on hold]

I've installed Ubuntu on my Asus F5SL laptop (T5750 Dual Core Processor 2.0Ghz, AMD HD 3470, 4GB RAM) with unity. I was curious about gnome and I've just purged everthing about unity like; sudo apt ...
0
votes
0answers
36 views

poor performance Ubuntu 14.04 [on hold]

I have the same hardware as my friend and we both run Ubuntu 14.04, however my computer is significantly slower than his. We did a bench mark on MATLAB to see how slow and it turns out mine is 10 ...
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
28 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
72 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
55 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
37 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
45 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
105 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
125 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
21 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 ...
9
votes
4answers
15k 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
44 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
106 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
296 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
39 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
36 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
76 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
17 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 ...
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 ...
0
votes
0answers
39 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
24 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
456 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
67 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
27 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
25 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
113 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 ...
2
votes
3answers
5k 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
59 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
37 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
224 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
15k 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 ...
132
votes
7answers
313k views

How to check hard disk performance

How to check the performance of a hard drive (Either via terminal or GUI). The write speed. The read speed. Cache size and speed. Random speed.
0
votes
0answers
42 views

Ubuntu 14.4 running slow

I just bought the new Dell XPS 13 Developer edition which came preinstalled with ubuntu 14.04. After the initial boot it seemed a bit slow, but then it updated and worked fine, then later the same ...
0
votes
1answer
37 views

How to put ubuntu 14.04 LTS into Performance mode

I've tried the indicator-cpufreq but look at this: Screenshot of the indicator Rendimiento means High Performance and Ahorro de energía means Powersave. Seems like the indicator is obsolete, is ...
6
votes
1answer
4k views

Slow Response and System Lag

Recently my computer has been responding slowly. It was fine few days ago, but now it always lags. I need to find the cause. Thanks.
3
votes
1answer
5k views

How to take advantage of VirtualBox paravirtualization in an Ubuntu guest?

I have an Ubuntu 14.04.3 (with linux-generic-lts-vivid (3.19) kernel) 64-bit host, and a VirtualBox guest with the same OS and configuration. The host has an AMD A10-7800 CPU. If I enable the KVM ...
31
votes
6answers
37k views

Why most people recommend to reduce swappiness to 10-20?

I have seen in several site which recommend to reduce swappiness to 10-20 for better performance. http://community.linuxmint.com/tutorial/view/998 https://sites.google.com/site/easylinuxtipsproject/...
0
votes
1answer
82 views

Ubuntu is fast at one moment, but slow at the other moment

I am using Ubuntu 14.04 on my computer that acts as a server. Short pc spec list (lshw): http://pastebin.com/7ud6rpxX The average number of procs is 500 (I have got a little widget that I forgot the ...
1
vote
0answers
76 views

Windows flickering, lag on window resize

I have a 3 Years old PC (GeForce GTX570, i7, 16GB RAM, SSD, 2x 24'' LCD monitors) and I installed Ubuntu 15.10 (I also tried with Mint). Depending on the graphic driver I installed, I got various ...
0
votes
0answers
35 views

Ubuntu running extremely slow on P4 1GB RAM. New Install. Used to run well previously

i am currently running Ubuntu 14.04 64 bit on a Pentium 4 with 1 GB DDR2 RAM. It used to run butter smooth on 2 GB RAM. Unfortunately I had to remove 1 RAM card to use in another old PC. And now, in ...
0
votes
0answers
34 views

How to make dragging windows not lagging behind?

I am new to Ubuntu and I feel my window manager (I've tried Unity and Cinnamon so far) is not fully responsive. In fact when I take a window by holding its title bar and moving it around, the window ...
9
votes
3answers
13k views

Ubuntu 13.04 CPU frequency scaling 'stuck' on lowest frequency

I've just installed Ubuntu 13.04 on my MacBook Air, after toying around for awhile the machine felt really slow, so I checked out the CPU frequency. cpufreq-info, it reports 800MHz on all 4 cores (...