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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10
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1answer
3k views

How do I improve my server disk performance

I have an HP Microserver running Ubuntu 10.04 LTS. It's a low power server with 5 internal drive bays. I use it to backup my remote servers, VPSs and local laptops over the network. I want to get the ...
10
votes
1answer
2k views

Measure FPS of the game

I'd like to find an analogue of Fraps or any other fps counter on Ubuntu 12.10. After some googling I found 2 solutions: To use Mumble (I found it from this discussion). This solution didn't work ...
9
votes
5answers
52k views

Why is Ubuntu 14.04 so slow on my laptop? [closed]

I just installed Ubuntu 14.04 on a Dell laptop with 1.7Ghz Pentium M and 1Gbyte memory. Graphics are Intel® 852GM/855GM x86/MMX/SSE2, OS type is 32bit. The whole system is VERY slow. When I launch ...
9
votes
4answers
11k views

high performance with xen, vmware or virtualbox

I was wondering which is the best method to go about if I want to play win based games. I do not want to go with the dual boot method as this will cost me time to restart, login and run a os to do my ...
9
votes
1answer
9k 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 ...
9
votes
1answer
12k views

Slow USB 3.0 speeds

Long time forum forager, first time poster. I bought a Toshiba 500 GB usb 3.0 hard drive last week and instantly ran home to see how fast I could push it. On my desktop (that I built) I was able to ...
9
votes
1answer
31k views

What is IOMMU and will it improve my VM performance?

My Motherboard's chipset supports this feature IOMMU, i've read (but not really understand) that it improves the VM performance by letting the VM make use of the actual physical hardware instead of ...
9
votes
2answers
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 ...
9
votes
3answers
3k views

Computer running very slowly under 13.04

After having some bouts with windows 8 I decided to throw it out and run Ubuntu as the main operating system. Currently I am having some problems with performance: Even when running the simplest ...
8
votes
7answers
9k views

Will installing Ubuntu to dual boot with windows 8 slow down Windows?

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 ...
8
votes
9answers
2k views

Can I simulate a slow hard drive?

I have hunch that a certain intermittent bug might only manifest itself when there is a slow disk read rate. Troubleshooting is difficult because I can't reliably reproduce it. Short of simply ...
8
votes
2answers
4k views

Performance cost of running Ubuntu from external hard drive

A friend just complained to me about Ubuntu being slow. Although I've noticed a certain lack of snappiness with Linux vs Windows in the past, I really can't say I've had much to grumble about with ...
8
votes
3answers
10k views

How to run Ubuntu without GUI in Virtual Box?

I have a Windows XP laptop, in which I run VirtualBox with the latest Ubuntu, my hardware is little old, so running the latest version of Ubuntu inside Virtual box is kind of a hassle, very slow ...
8
votes
4answers
8k views

Does compiling a linux kernel make the OS faster?

Does compiling a downloaded linux kernel (e.g 3.2) make the OS (e.g ubuntu) faster on that specific machine?
8
votes
5answers
1k views

How to make dash load faster in unity-2d

My dash always takes 10-15 seconds to show up. Is there a way to make it stay permanently loaded in the RAM or something so that it shows up faster?
8
votes
1answer
1k views

What would be the recommended kernel configuration for a gaming machine?

I have read a lot of talk about how OpenSUSE is using a "Desktop" kernel. This kernel utilizes a 1000hz timer and full preemption among other things. The feature request here goes into more detail ...
8
votes
6answers
3k 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 ...
8
votes
1answer
2k views

Why does Chrome video performance substantially degrade after waking from suspend in 10.10?

Note: For some more details, some of which may not be true given what I've figured out, see this post. When I first boot my computer, video performance (both native H.264 HTML5 in YouTube and Vimeo, ...
8
votes
3answers
3k views

Upgraded to Ubuntu 14.10 and *everything* lags

Yesterday, I upgraded my Lenovo Thinkpad X1 Carbon (2013) from Ubuntu 14.04 to Ubuntu 14.10. Since then, everything lags, from applications when opened (or 'drawn back in the background' for an ...
7
votes
6answers
34k views

My system is very slow running Ubuntu [duplicate]

Possible Duplicate: How can I improve overall system performance? I recently installed Ubuntu. I was using Windows XP for years, then I decided to try Linux. This is my computer: 2.40 Ghz, ...
7
votes
4answers
7k views

How does ecryptfs impact harddisk performance?

I have my home directy encrypted with ecryptfs. Does ecryptfs lead to fragmentation? I have the feeling that reading files, displaying folders and login became continuously slower and slower ...
7
votes
2answers
5k views

Slow SSD + dm-crypt with Luks encryption in Ubuntu 12.10

I have an 128 GB SSD installed in my laptop (Samsung 840 Pro) on a Sata 3 interface. This laptop also has an i5 3210m Ivy Bridge Intel processor and 8 GB of RAM. I installed Ubuntu 12.10, using the ...
7
votes
4answers
4k views

What to do against game performance drop in 12.04 when using unity (3D)?

I experience a huge drop in game performance since my fresh install of ubuntu 12.04 My PC consists of an Nvidia Geforce GTX 460, AMD Phenom II X4 965 CPU and 4GB of RAM and I use nvidias proprietary ...
7
votes
3answers
5k views

Tips for debugging Samba performance?

Samba gives me 24 MB/s read and 44 MB/s write, while ftp gives 97 and 112 MB/s under the same circumstances. The documentation says that Generally, you should find that Samba performs ...
7
votes
3answers
8k views

Ubuntu slows down over time?

About a few months ago I was using Ubuntu (doing something in the command line) when it started lagging really bad. I would hit S (or any other key) and like 20 seconds later it would show up in my ...
7
votes
1answer
1k views

Does installing to an extended partition reduce disk performance?

I was reading the latest issue of Full Circle (issue 63) and there was an article comparing boot times under various configurations. One of the comparisons was with an installation in a primary ...
7
votes
2answers
1k views

Is my boot process normal? It takes 50 seconds boot

Here's my boot.log resume: libgcrypt version: 1.5.0 fsck from util-linux 2.19.1 fsck from util-linux 2.19.1 fsck from util-linux 2.19.1 /dev/sda5: clean, 668102/3276800 files, 4449436/13107200 blocks ...
7
votes
2answers
3k views

How to restore/change Alt+Tab behaviour/ram usage and a few other things after Ubuntu upgrade from 11.04 to 11.10? [closed]

I use Ubuntu for programming. I recently updated it from 11.04 to 11.10. There are some things I don't like in the new version of Unity desktop interface. I don't actually know if it is hard to ...
7
votes
2answers
833 views

Get flash drive to cache disk reads to primary partition

Basically I'm looking for a way to mimic Windows' ReadyBoost. I asked this question on Unix.SE to get an idea of whether this was even possible and it seems like it is. Appparently there is a cachefs ...
6
votes
1answer
2k views

Assign more than 1 CPU/core to a process

I lost the password to open a PDF file I need to access, so I installed pdfcrack with the hope to recover my password. Actually it's one month that pdfcrack is running but I still am waiting for the ...
6
votes
3answers
476 views

Will a package I compile myself perform better than installing from the repositories?

Does a package performance is different when it's compiled from sources, or installed from repository ? Is it possible, what during the compilation, the package will be "more adapted" (performance, ...
6
votes
6answers
3k views

What's a good cheap video card?

Can anyone recommend a good, cheap video card that can handle modern desktop requirements? Cheap is somewhere under $50. I'm talking about decent 3d effects for Unity and friends, as well as playing ...
6
votes
3answers
4k views

How to speed up rsync/tar of large Maildir?

I have a very large Maildir I am copying to a new machine (over 100BASE-T) with rsync. The progress is slow. VERY SLOW. Like 1 MB/s slow. I think this is because it is a lot of small files that ...
6
votes
3answers
17k 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 ...
6
votes
1answer
822 views

Is My Filesystem Corrupt or Something?

OK, so for the past 2 days my Ubuntu Install (10.10) has been acting in a very strange manner. Just after the login process is done, and the desktop is loading everything seems to be fine, it is fast ...
6
votes
2answers
7k views

What is process “/usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none”?

I am experiencing some serious performance issues with my Ubuntu 12.04 setup and thus looking for the culprit by running htop alongside my usual tasks. Aside from the usual suspects like chromium, ...
6
votes
11answers
2k views

Desktop runs very slick, animations are all fast and flawless. Moving windows around, however, is very laggy. Why?

This isn't a question about Ubuntu being laggy in general - not at all, in fact, it's very slick and fast for me. Clicking the "Workspace Switcher" in the dock performs the animation immediately and ...
6
votes
2answers
1k views

Slow installation of applications in Ubuntu Software Center?

I have installed Ubuntu 11.04 desktop and I am in the process of learning. I want to install some applications from the Ubuntu Software Center, but the installation process is quite long and slow. ...
6
votes
2answers
10k views

Switching mdadm to an external bitmap

I've just read this in another post about improving RAID5/6 write speeds: After increasing stripe cache & switching to external bitmap, my speeds are 160 Mb/s writes, 260 Mb/s reads. :-D ...
6
votes
1answer
4k views

`indicator-cpufreq` doesn't seem to work on 14.10

I have a Dell XPS 12 and just installed Ubuntu 14.10 (by completely wiping out the old 14.04 installation). The indicator menu has 2 options, Performance and Powersave, from which I choose ...
6
votes
1answer
6k views

How will 12.10 disk encryption affect performance?

As the title suggests. Massive performance degradation? And what technology does it use?
6
votes
2answers
777 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 ...
6
votes
3answers
3k views

Ubuntu feels slow after 11.10 update

I recently updated Ubuntu to the latest 11.10 version. For some reason since the update Ubuntu reacts slowly. For example, when I drag a window there is a delay in the movement, when I write text it ...
6
votes
1answer
2k 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.
6
votes
2answers
9k views

Do SSD/HD hybrids increase performance in Ubuntu?

There are mass storage drives that consist of a large HDD and a smaller part of flash memory. From the computer's point of view they act just as a normal hard drive, but internally the disk internally ...
6
votes
3answers
11k views

Very slow system after installing 13.10?

Just "upgraded" from 13.04 to 13.10 on my Acer C7 Ubuntu'd Chromebook and first thing I noticed is that everything is very slow and unresponsive. Hardly had this on 13.04. Opened system monitor to ...
6
votes
3answers
2k views

Ubuntu sometimes starts swapping like crazy for no reason

Every once in a while, my Ubuntu starts using the hard disk like crazy, and for 3 minutes I can't move the mouse nor access any console, even CTRL-ALT-BACKSPACE and CTRL-ALT-F1 do nothing. It is ...
6
votes
2answers
641 views

Tell the kernel to strongly cache a particular directory

This question is a rephrasing of Optimizing EXT4 performance. I have a directory that contains build files, most very small, but totaling 5.6G. I usually access the same subset of files (some ...
6
votes
7answers
2k views

Will Ubuntu go faster with Ubuntu 2D instead of Ubuntu 3D?

I tried both Ubuntu 3D and 2D, and it looks as if it goes fast in both, except when I open the dash menu (in 3D), it goes too slow. If I resize the Dash, it goes a little slowly, but not too much. Is ...
6
votes
1answer
398 views

Is Firefox 6 performance worse in Ubuntu than upstream?

It has been said that Firefox 6 will perform better than previous version because it compiles with a newer version of GCC, version 4.5, and aggressive optimization. When I updated to Firefox 6 in ...