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.

learn more… | top users | synonyms

7
votes
6answers
23k 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
2answers
9k 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 ...
7
votes
2answers
3k 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 ...
7
votes
4answers
5k 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
5answers
890 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?
7
votes
4answers
3k 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
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

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
697 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
1k 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
262 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
3k 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
4k 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 ...
6
votes
4answers
4k 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?
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
1answer
599 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
4answers
9k 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
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
2answers
7k 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 ...
6
votes
1answer
1k 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
3answers
4k 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 ...
6
votes
2answers
524 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
2answers
5k 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 ...
6
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 ...
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
374 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 ...
6
votes
1answer
980 views

Unity is slow and laggy on my PC

I love Unity but its performance is slow and it always lags when I multi task. I have 512 MB of RAM. Please help me, I want to do my work smoothly with Unity.
6
votes
1answer
602 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 ...
6
votes
3answers
2k views

Bad performance with ATI Radeon X1300?

i'm having problem with Ubuntu 10.04 and my Ati radeon X1300. In particular i can't enable effect (compiz) because they are SLOW, and, for example, the same game (hedgewars) on the same pc run very ...
6
votes
1answer
2k views

Opening programs very slow on ubuntu 12.10

When I open any program for first time after boot, it loads VERY slowly (Doesn't matter how long after boot). For example, terminal takes 2-3 seconds, skype and firefox often take much longer. If I ...
5
votes
6answers
1k views

Is there a WINE version of Flash as a plugin to Firefox or Chrome?

I've seen complaints about flash performance. Would it be possible to use WINE as a plugin to firefox in order to get better performance out of flash? (Hopefully WINE would utilize some sort of ...
5
votes
6answers
221 views

I am using Edgy Eft (6.10). If I switch to 10.04, how will it affect performance?

On my laptop (hw info below) I currently run Ubuntu 6.10 (Edgy Eft). The computer has been my work computer since 2006. I am considering doing a reinstall to get something more recent. What can I ...
5
votes
4answers
645 views

How can I empty the trash without first opening it?

The only way I've seen how to empty the trash is to use the Empty Trash button that is displayed after choosing Go | Trash in Nautilus. If there are too many items in the trash it can take a long time ...
5
votes
2answers
998 views

16GB SSD booster on ubuntu

I've bought a Lenovo Thinkpad Edge laptop which has a hybrid 320GB HDD + 16GB SSD, then I've installed Ubuntu 12.04, so now I have dual boot - Ubuntu/Windows7. Everything is fine but the question is ...
5
votes
1answer
966 views

Removing Annoying Delay in optirun

Can I somehow remove the ~4 seconds delay present in calls to optirun? I need my compiler-run iterations to run faster. Does bumblebeed play a role in this? I'm sitting on Ubuntu 12.04 on an ASUS ...
5
votes
2answers
7k 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 ...
5
votes
1answer
4k views

How will 12.10 disk encryption affect performance?

As the title suggests. Massive performance degradation? And what technology does it use?
5
votes
2answers
4k views

Why is there no oprofile in 12.04?

I've upgraded a ubuntu server from 11.10 to 12.04. The oprofile package i installed is missed. As shown in https://launchpad.net/ubuntu/precise/+source/oprofile/0.9.6-1.3ubuntu1, oprofile seems to ...
5
votes
4answers
2k views

ATI proprietary driver performance?

I'm about to (at least, want to..) buy a laptop with an ATI Radeon HD 4250, and I haven't a good opinion on ATI's drivers. How is the actual performance of the open/proprietary driver (currently I ...
5
votes
1answer
346 views

Is there a way to force a specific file to exist in RAM only?

I like this suggestion of mounting a tmpfs at /var/log in order to reduce disk writes. Is there any way to do something similar for just a single file such as ~/.xsession-errors? My incentive for ...
5
votes
2answers
705 views

Optimizing Unity 3D launcher

I had been using Synapse and Docky for launching application and finding files. I really love unity but I am seriously facing problem when I want it to appear quickly and search quickly application ...
5
votes
1answer
15k 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 ...
5
votes
1answer
4k views

Better drivers for SiS 650/740 integrated video?

I installed Xubuntu 10.10 on an old box today and the graphical performance is horrid. According to lspci, the video card is this: 01:00.0 VGA compatible controller: Silicon Integrated Systems [SiS] ...
5
votes
2answers
8k 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 ...
5
votes
2answers
2k views

How can I turn off “eye candy” and make Ubuntu run as fast as possible?

For example in Windows XP (and onwards), you can Right Click My PC -> Properties -> Advanced System Settings and disable a whole slew of features that turn off eye candy and make the computer ...
5
votes
1answer
993 views

Laptop's hard drive doesn't really spin down

I have a new laptop with dual boot to both windows 7 and ubuntu 11.04. While in ubuntu, the laptop gets significantly warmer than in windows. My suspect is the hard drive, because I feel it's ...
5
votes
1answer
4k views

gvfs-afc-volume-monitor uses a lot of CPU

In my Ubuntu 9.10 installation, I notice that the process gvfs-afc-volume-monitor causes my CPU core to go to 100% (that means for my dual-core machine to 50%). Killing this process helps, but I see ...
5
votes
1answer
930 views

How to speed up Evolution

I have a moderately big Inbox file (around 2.3Gb) and Evolution takes a lot to start (it takes over 2.5 mins until I can perform any action -read or compose mail, for instance-). During that time, the ...