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
votes
9answers
3k 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 ...
10
votes
6answers
14k views

Will running dual monitors have any significant impact on system speed?

Will setting up dual monitors on a decent-but-not-too-powerful machine significantly slow down my system? For specifics to my system, this is a 2GHz Intel Dual-core laptop with 4GB RAM and a decent ...
10
votes
9answers
7k views

Is 1GB RAM with integrated graphics sufficient for Unity 3D on 12.04?

I have been using Ubuntu since Hardy Heron (8.04). I used Natty, Oneiric with Unity. But When I recently (more than 1 month now) upgraded My Ubuntu to Precise (12.04), the performance of my laptop is ...
10
votes
3answers
734 views

How can I log my SSD's read performance over time?

I'd like to keep a log over time, perhaps weekly, of my solid state drive's read rate as determined by a tool like System -> Administration -> Disk Utility -> Benchmark: Is there a way to archive ...
10
votes
1answer
14k 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 ...
10
votes
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
3k 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
4answers
12k 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
3answers
13k 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 ...
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
4k 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
13k 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
4answers
8k 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 ...
8
votes
2answers
5k 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
4answers
10k 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
2answers
7k views

How to monitor disk activity?

How do I view my Disk Activity on Ubuntu? For example, How can I monitor what is being written and read from disk as well as the percentage of disk usage? I am looking for an application similar to ...
8
votes
1answer
2k 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
4answers
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
3answers
32k 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 ...
7
votes
6answers
37k 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
3answers
12k views

GUI Performance Monitor Tool

I need to monitor the performance of an Ubuntu 12.04 machine. I am looking for a tool similar to PerfMon on Windows. I need something more interactive that using top from a terminal ; I am looking ...
7
votes
1answer
281 views

System locks up when disk I/O is saturated

When I do a large file transfer from my external USB3 hard drive to my internal hard drive (or vice versa), be it via Nautilus or via terminal, Ubuntu (Unity) will almost completely lock up. Things ...
7
votes
2answers
8k views

How do I measure performance of a virtual server?

I've got a VPS running Ubuntu. Being a virtual server, I understand that it shares resources with unknown number of other servers, and I'm noticing that it's considerably slower than my desktop ...
7
votes
2answers
9k 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, ...
7
votes
1answer
6k 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 ...
7
votes
1answer
766 views

Show files being accessed most in a short time period

So I've got a server that's struggling under the weight of several Wordpress installs. Things are relatively well cached (I am planning to improve things anyway) but I can quickly see that disk IO is ...
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
9k 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
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
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
2k 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, ...
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
858 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
2answers
2k views

Why to use ordinary kernel if there's realtime one?

What are benefits of an ordinary Ubuntu kernel compared to realtime one? What are realtime kernel's tradeoffs?
6
votes
2answers
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
567 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
4k 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
6k views

Firefox use lot of cpu

I have a notebook nb510 Toshiba with Ubuntu 12.04 and firefox 22.0 with extensions like addock-plus, x-notifier, download helper, xmarks. Sometimes it's take more cpu than 100% This information of ...
6
votes
3answers
4k 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 ...
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
2answers
7k views

How can I enable zswap?

Ubuntu 13.10's release notes mention that it includes Linux 3.11, which supports something called zswap: Zswap is a lightweight, write-behind compressed cache for swap pages. It takes pages that ...
6
votes
1answer
896 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
11answers
3k 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
11k 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
106 views

Got a new SSD, don't want to wear it out but I still want to use some of it to store data files together with the old HDD

I've bought a brand new 250GB Samsung 850 EVO for my laptop, that I want to use as primary storage device, together with the old - but still pretty functioning - 250GB 7500 RPM HDD that I put in the ...