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

2
votes
1answer
148 views

Laggy file manipulations with Unity

I just upgraded to Ubuntu 11.04/Unity, and every file manipulations just feel very laggy (at least one second): Selection Drag and drop Even folder browsing My hard drive is OK, I'm using the ...
3
votes
1answer
7k 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 ...
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 ...
2
votes
3answers
768 views

Graphics very jerky on Natty Narwal

I just got a new laptop, and installed narwal on it. Things like youtube videso play fine, however "system graphics" (for lack of a better term) are extremely jerky, for example closing a tab will ...
2
votes
4answers
2k views

Would I benefit from reducing, or increasing swappiness?

I've read a few articles now about changing the swappiness level on Ubuntu to possibly increase performance. But I'm very unfamiliar with how swappiness works, would I benefit from increasing, or ...
1
vote
2answers
402 views

What's the best, most compatible sub-$100 graphics card for Natty?

Since upgrading to Natty graphic performance has been absolutely terrible despite having decent system specs. I'm willing to buy a new card if it will make the interface fast again. Can someone ...
3
votes
2answers
2k views

Video performance on a Lenovo T520 is slow

I have a new Lenovo t520 with 8gb memory and a i7 cpu. It's the first time I 'really' install Ubuntu on a pc. I have about six months of experience with Ubuntu as a guest OS on Windows in a VM. Now ...
0
votes
1answer
486 views

Ubuntu server unstable performance

I am experiencing frequent drops in performance of my server (affects both webserver performace and ssh). It may work fine all day and then suddenly pages load 10 times slower. After awhile it comes ...
27
votes
5answers
64k views

How to perform a detailed and quick 3D performance test

I am wondering how to quickly test performance of my 3D graphics. Since glxgears is not benchmark what should I use. Also glxgears sometimes stuck at 60FPS, you cannot even compare before/after driver ...
3
votes
2answers
2k views

Graphics performance of 945GME

Edit: Since setting Appearance -> Visual Effects up to a stunning "Normal", I now get ~35 FPS in glxgears right after login, with nothing else running :( I'm getting terrible graphics performance in ...
7
votes
2answers
826 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
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 ...
1
vote
2answers
1k views

Thunderbird compact is taking forever

The other day I came in to work and found that our development server - a Ubuntu box - had a full hard disk. I did a bit of investigation and it seems like mozilla thunderbird is the major culprit. ...
3
votes
2answers
1k views

Slow Ubuntu 10.04 after long time unused

I'm at spring break so I'm back at my parent's house. I've turned my computer on which has been off since January and its unusably slow. This was not the case when I last used the computer in January. ...
4
votes
4answers
802 views

MacBook Pro: should I virtualize Ubuntu or use Boot Camp?

I'm looking to run Ubuntu on a 2008 MacBook Pro 2.4Ghz C2D, 2GB GDDR3. Will it be okay performance wise through virtualization such as VMWARE or should I use BootCamp? Thanks.
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 ...
5
votes
4answers
23k views

How to check system performance?

Is there a way to measure the performance of 3D acceleration, java applets, firefox scrolling etc. with a tool and compare it with lets say a windows OS or other users having almost the same hardware? ...
4
votes
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 ...
1
vote
2answers
2k views

Tuning my Ubuntu installation [closed]

I'm using Ubuntu 10.10 and i'm interested in hearing a few tips on how to improve performance and tune my system to be faster. Any articles or links on this? Thanks in advance!
2
votes
1answer
188 views

Should I reorder partitions regarding performance

I have in principal 3 big partitions on my Netbook. One Windows, one for shared files, one for Ubuntu. I recently find out (using hdparm) the the hardisk seems to have much better perfomance on the ...
7
votes
3answers
7k 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 ...
21
votes
4answers
11k views

What is the performance overhead of encrypted /home?

I have a netbook with Windows on the second partition and Xubuntu (/ and /home) on the third partition. I selected to encrypt my home folder during installation. The performance of the netbook is ...
11
votes
6answers
31k views

Best way to set up DNS caching?

In order to speed up DNS lookups, I want to install a DNS cache or proxy. I can see at least three programs I think will do the job: bind9, pdnsd, or dnsmasq. I would like to make sure that if I ...
2
votes
1answer
966 views

System has gotten very slow of late. How to unearth the problem?

I have been running processor and memory intensive tasks past 2 weeks. But, even after i stop the run, the system is pathetically slow. A simple operation like opening the terminal by clicking on the ...
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 ...
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.
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 ...
12
votes
4answers
3k views

Can I limit the CPU usage of a single application?

Is there a way to stop ClamScan eating my server CPU?
5
votes
1answer
5k 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 ...
4
votes
3answers
904 views

Mutter slows down my system

My Ubuntu (10.10, netbook remix, unity) almost freezes from time to time. As far as I've investigated, the problem is with mutter. Then I run pkill mutter it restarts window manager and system ...
1
vote
2answers
2k views

How can I speed up the graphic display on an HP Mini 110 series?

I have an HP Mini 110 series, and I see that anything that involves grahics or window management is getting very slow. I have the usual 1GB of RAM and the Atom N450 processor. Is there any special ...
6
votes
1answer
810 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 ...
4
votes
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
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.
2
votes
2answers
1k views

Poor compiz performance on NVidia 9500 GT

I have just installed Ubuntu on both my laptop and my workstation. My laptop is a somewhat older one, with a 2Ghz centrino Core 2 Duo processor, an NVidia GeForce Go 7300 graphics card, and 2 ...
2
votes
1answer
597 views

Very long Gnome login time

My machine is taking ages to get from the login screen after booting to actually showing the gnome desktop (as in, over a minute). It seems as though it is just waiting for a long period of that time ...
4
votes
6answers
1k views

Apple G4 733Mhz and 512Mb Ram… Any suggestions on what to use for good performance?

I'd like to install Ubuntu on this little g4 I've found... I hope to get a better performance than Os X 10.4, is it possible? I thought about using a server minimal install and then put on it gnome, ...
5
votes
2answers
5k 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] ...
4
votes
2answers
271 views

How to manually trigger fsync()?

I've used libeatmydata to quickly perform apt-get update. Now I want to run standard fsync to make sure that everything is written to disk. How can I do it? Preferably a small script / binary, and for ...
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 ...
62
votes
6answers
10k views

How do we get this magic performance-boosting 200 line patch?

I read today on Phoronix that there is a 200 line patch to the Linux Kernel which dramatically improves desktop responsiveness. How can Ubuntu users get this in a way that's supported?
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 ...
19
votes
5answers
829 views

Do you ever have to do any regular maintenance?

For example, de-fragmenting, disc cleanup, or stuff like that?
10
votes
4answers
6k views

Is there a tool to measure speed of your pc/laptop?

In Windows 7 there is a tool that calculates some kind of index of your machine: the performance index. I am not sure how it is done, but it is nice to know, to be able to compare machines. Does ...
15
votes
10answers
7k views

Long wait time on login

When I log in on my server I get this: No mail. Last login: Fri Nov 5 14:22:45 2010... then I must wait for 5 sec and then is ready... wolfy@ubuntu-server:~$ Is this wait time normal or should ...
8
votes
1answer
1k 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, ...
3
votes
1answer
3k views

Why four tasks named kslowd eat CPU time?

I installed Unity on my Belinea o.book 13011. Now there are four Tasks named kslowd000 to kslowd003. Each task uses 10-15% CPU, expect there is another Task that needs more. So the CPU Fan is ...
35
votes
11answers
38k views

How do I improve boot speed?

I have seen many videos that make Ubuntu faster, but only makes the desktop faster. I am looking to make my computer boot faster. Is their anything i can do to make Ubuntu boot significantly faster?
2
votes
3answers
1k views

Performance of 3D applications on Unity/Compiz comparison with other configurations

In the past I have had three important applications having problems with compiz and the proprietary Nvidia graphics driver, they are; Googleearth, The Secondlife client and Blender, compiz and the ...
4
votes
1answer
772 views

i3 core performance problems

I just tried to play Quake3 (QuakeLive) on a new laptop with an i3 core integrated gpu, running Ubuntu 10.10. Strangely, the performance was terrible. I'm running on intel driver, which seems to load ...