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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1answer
4k views

zram vs zswap vs zcache Ultimate guide: when to use which one

What the hell are they? how are they different (I've written my understanding in an answer below) In the Zswap system, when a page is evicted from the zswap to the actual swap is it stored in a ...
4
votes
2answers
115 views

Many games stuttery - nvidia

Many games I play are stuttery, (run at a fine fps, but pause randomly every second or so). This happens both when running a native game such as Amnesia, and a game through wine like LoL or WoW. ...
4
votes
2answers
2k views

Does Ubuntu run well on an USB HDD?

I have here a company notebook, and because the HDD is full encrypted, I cannot install an extra partition for another system that I would like to use in my free time. And I really need another ...
4
votes
1answer
916 views

SD Card Transfer very slow

I copied some MySQL-DB stuff to my Class 6 SD card. It needed 45 min. for the transfer. Same machine with XP it does it in a few minutes, with Win7 on another machine transfer is also fine. Checked ...
4
votes
2answers
7k views

How to reduce TCP latency for gaming?

I use Ubuntu for gaming. In competitive gaming every millisecond matters. I know that many people who use Windows use something called Leatrix Latency Fix which is basically a script that modify ...
4
votes
2answers
770 views

Will 7000+ fonts slow down my system?

I've just recently download the whole collection of open source fonts hosted by Google, and was wondering if installing them on my computer would cause performance issues. The aforementioned computer ...
4
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2answers
2k views

RAID slow on all levels

I am getting very slow write speeds (<1MB) with RAID 1 and RAID 0 (striping and mirroring). The read speeds are sufficiently fast but writing is very slow. At first I thought it was just poor ...
4
votes
3answers
6k views

Recommended testing tools to test MySQL performance?

What is the recommended tool(s) for testing the performance of MySQL 5.5 (innodb) under Ubuntu 12.04? We have purchased a new multi-cpu multi-core server to replace our current MySQL dual-core ...
4
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1answer
1k views

Can I lower the graphical strain of GNOME Shell?

Is there some way of configuring "No Effects" in the backend of GNOME Shell to get less memory/CPU overhead from graphical applications? I don't dare to turn on Metacity compositing due to this: ...
4
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0answers
135 views

KVM guest performance impacted by very long virtblk disk wait times

I have several KVM guests running on Ubuntu 14.04 using libvirt. Their performance is very poor. The intermittent nature of the poor performance with an order of magnitude variability in simple ...
4
votes
0answers
14k views

Details window showing “unknown” driver for Graphics [duplicate]

Possible Duplicate: How can I get my graphics card to be recognized in System Info? I have Intel Graphics Card, which have model number GM965. It is on a Notebook, (Lenovo 3000 Y410). My ...
4
votes
1answer
169 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 ...
4
votes
0answers
2k views

How do I improve boot time? [duplicate]

Possible Duplicate: How do I improve boot speed? I Have read many question on this but It is all about disabling startup daemons/programs. Since then I have installed a lot of programs and ...
4
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5answers
9k views

Why is Ubuntu running slowly on this computer?

I'm running ubuntu lucid lynx on the following config: 2GB DDR2 Ram 1.50Ghz Core2Duo Nvidia 128MB 8400GS GFX Card Due to some reason the entire operating system feels laggy. The window manager, ...
3
votes
6answers
3k views

How to tweak Ubuntu running on an old PC?

After getting some old, but fancy hardware from my friends, I want to setup a second PC running ubuntu. Due to the fact that the hardware is more than five years old, I'll have to tweak some things to ...
3
votes
3answers
773 views

defragmentation of ext2

Is it worth it? there is e2defrag. How long will it takes for 120GB? 8h will be enough? I would like to improve read/write on the hard disc. hard disc seems to be new(9 months old). its in my work ...
3
votes
3answers
5k views

What alternatives to Nautilus exist which are more responsive? [duplicate]

I like Nautilus, but it suffers from lag when navigating between folders. I estimate the delay at somewhere between 300ms-800ms. Not much, but enough to notice and feel sluggish compared to Windows ...
3
votes
2answers
3k views

Unable to start netperf server

I am working on Ubuntu 12.10 and I just installed netperf by apt-get install netperf. Then I tried to start netperf server by running netserver and I got Unable to start netserver with 'IN(6)ADDR_ANY' ...
3
votes
3answers
1k views

Unity or Unity2D, which will be fastest on a high spec computer?

I have a decent laptop. i7 quad 2.8, 8gb ram, and Nvidia nvs3100m. I wonder which of unity 3d and 2d that would be fastest on my system. Sure its hard to tell. And the question I'm seeking answer ...
3
votes
5answers
2k views

Anti virus / Anti malware software [duplicate]

Possible Duplicate: Is scanning VIRUS needed on Linux Distros? Do I need anti virus / anti malware software? Which sw do you recomend? Where do I get it? Im new to Ubuntu.
3
votes
2answers
2k views

Will unity performance improve in natty or remain slow?

There are some apps developed by canonical that are way too slow. This are USC and Unity. Unity in 10.10 is insanely slow (compared to GNOME which isn't actually a very fast DE) and totally unusable ...
3
votes
2answers
9k views

The performance governor for cpufreq doesn't seem to behave as advertised

The kernel in use: 3.2.0-23-generic on Ubuntu 12.04LTS For example, I issue the following command: sudo cpufreq-set -c 0 -g performance Then I go to /sys/devices/system/cpu/cpu0/cpufreq and type ...
3
votes
1answer
308 views

What programs can I use to improve network performance? [closed]

What programs are available to see the performance of my pc? My internet seems to be loading very slow and I have a business internet connection. I ran the command lshw -C network and this is what I ...
3
votes
2answers
2k views

Ubuntu SSD performance issue

I have installed Ubuntu 12.04 on a 55GB Adata S599 SSD. I have a Asus M4N68T motherboard that does not support AHCI. Bootup takes a lot longer than expected and working in the system is not even close ...
3
votes
2answers
2k views

Does VirtualBox permanently affect performance?

I would like to install VirtualBox as an Ubuntu testing environment. Must I permanently sacrifice system resources such as RAM? Or only when the environment is running?
3
votes
2answers
1k views

Why I'm seeing 7 users, a abnormal usage of Virtual Memory, lots of stream connections and all process sleeping?

Using a Toshiba Satellite l645d s4025 amd dual core p320 2.1ghz 3gb ddr3 ram 250 gb hdd Below is the incomplete top report(don't know how to select all to copy) Using an Ubuntu 12.04 amd64 ...
3
votes
1answer
204 views

Is there any difference in using switch user and login?

I have configured my Ubuntu Oneiric to automatically login to a standard user account. This setup is for my parents who don't know much about computers. But when I use it I need to login as an ...
3
votes
1answer
140 views

How do I enable submission of performance data in Firefox 7?

One item in the release notes of Firefox 7 reads Added an opt-in system for users to send performance data back to Mozilla to improve future versions of Firefox This is feature is also called ...
3
votes
2answers
3k views

How I can disable CPU frequency scaling and set the system to performance?

My processor is running at 40% of its maximum speed, I want it to use 100% of the speed, all the time. I searched on Google but the tutorials are very old and they all differ. So, how can I ...
3
votes
2answers
494 views

ls on home directory very slow

A while ago, I accidentally created hundreds of thousands of files in my home directory which I subsequently deleted. Since then however, running ls in my home directory has been extremely slow ...
3
votes
2answers
2k views

No Unity, launcher and dash on Ubuntu 13.04 within VirtualBox4.2.12 after enabel 3D Acceleration

I was using Ubuntu 12.10 in my VirtualBox4.2.12 on my Windows7 Host. They worked good. But when I install Ubuntu 13.04 in VirtualBox 4.2.12, the screen and display are very slow. I have followed this ...
3
votes
1answer
1k views

SSD tweaks for Ubuntu 12.04 cause Texmaker to compile a lot slower

I added these tweaks from Ubuntu SSD Tweak and Ubuntu Tweaks but now Texmaker is compiling slowly. Does someone know what tweak would be causing this? Or could I edit something unrelated to the ...
3
votes
1answer
7k views

ATI Radeon HD 3200 very slow performance

I used ATI fglrx driver for 12.04 with ATI Radeon HD 3200. After upgrade to 12.10 - there is no fglrx and the system uses standard opensource ATI driver. The driver is very slow especially on playing ...
3
votes
2answers
937 views

How do I know if I'm getting the most out of my video card?

My computer at home is a bit lacking, so I want to make sure I'm getting the most out of it while I can. Generally speaking, here are the specs: 4GB Memory AMD Athlon(tm) 64 X2 Dual Core Processor ...
3
votes
2answers
2k views

Performance while on battery - Ubuntu 11.10

First time on battery after installing Ubuntu 11.10. What I immediately notice is poor graphics performance and overall poor system responsiveness. If I plug in the power chord, it's all good. I am ...
3
votes
1answer
485 views

How do I get Perfmon support for my kernel?

I would like to install perfmon for using performance monitoring events on my Ubuntu 10.04 LTS server machine. I have read that Ubuntu kernel 2.6 comes with perfmon support. However, as we can see ...
3
votes
2answers
3k views

Slow and Laggy Animations

Why are my animations laggy and slow on my laptop? AMD Turion tl-56 and HD 3200 with 2 Gig Ram.
3
votes
1answer
2k views

Install to SD Card

I've been wondering about improving the performance and battery life of my netbook by installing my root partition to an SD card. Will there be any performance benefits (or drawbacks)? Are there any ...
3
votes
1answer
82 views

VMware Player 7 performance on Ubuntu 14.0.4

My dual-boot laptop (Windows 8.1 + Ubuntu 14.04) I installed, on both Windows and Ubuntu, VMware Player 7.0.0. In other words: Same exact hardware (16GB RAM!) Same VMware Player version (7.0.0) ...
3
votes
1answer
6k views

Extremely slow network transfers in one direction

File transfers from my home server (running Ubuntu 12.04 Server) to any other PC on my LAN (all running Windows 7) are extremely slow, but file transfers in the other direction (uploading to the ...
3
votes
2answers
453 views

Can I enhance the performance of ubuntu using a sd card by in anyways?

I'm just curious if it is possible do it. I have a spare 4gb sd card.
3
votes
1answer
2k views

Mir the X Server replacement [closed]

I read much about the X Server replacement Mir, but I am not quite sure which benefits it will have. Ok it is a newer technologie, the currently used X server uses code that is twenty years old or ...
3
votes
2answers
7k views

How do you apply performance tuning settings for Native zfs?

I am currently running an Ubuntu 12.10 Desktop with some zfs pools. I have installed ZFS using the following instructions and from the PPA it contains: https://wiki.ubuntu.com/ZFS I have a ...
3
votes
1answer
3k views

Compiz taking 40-30% of CPU resources, is it ok ?

On normal working with nothing opened, compiz fires up to 50% CPU usage on my machine. Which is abnormal I think. Is this a bug or is this behavior ok? I am running Ubuntu 12.04 on Intel i5 ...
3
votes
1answer
2k views

Choices of tools for graphical performance indications?

On Windows I had some choices for tools that could display how hard my CPU or disk was working, in a graphical form so I could get a quick view of what's going on. Is there some analogous set of ...
3
votes
3answers
12k views

Ubuntu 12.04 slow performance [duplicate]

Just installed Ubuntu 12.04 64-bit on my ACER 5742 laptop. The performance is really slow. While browsing pictures in Google, occasionally my system just freezes for about 5 seconds. Also, ...
3
votes
1answer
2k views

How to speedup Ubuntu when user home directory on NIS/NFS?

I discovered that Ubuntu 11.04 is kinda slow when you have your home directory on NFS, even when NIS itself doesn't have any performence issues. Still it seems that many applications including ...
3
votes
1answer
387 views

Slow flash on certain web pages

When trying to use www.songsterr.com for listening guitar tablatures i get a few second lag between diplay and audio. Also, while playing on chesscube.com, moving the pieces is quite horrible because ...
3
votes
5answers
1k views

How can I improve performance and user experience in 11.10 (boot + shutdown time, graphics, …)

I've been dual-booting with Ubuntu and Windows since Ubuntu 9.04. This was the first time I used Ubuntu and was really happy with it. The boot and shutdown time was very nice and much shorter than on ...
3
votes
1answer
6k views

How do I disable TCP Window Scaling?

TCP Window Scaling is part of RFC1323 - TCP Extensions for High Performance I'm on Ubuntu 10.10 at the moment. For an immediate effect I have run the following: sudo sysctl -w ...