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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0
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0answers
6 views

Ubuntu 15.04 running slow

I used to have a Ubuntu 15.04 portable install on my flash drive - SanDisk Cruzer Edge 8GB. I was fairly satisfied with the performance and usability, but I ran out of space very quickly. I grabbed a ...
1
vote
3answers
2k views

Getting URL of YouTube video with `youtube-dl` is slow, without downloading video

I want to get the URL using youtube-dl, and the "simulate" option -g that does not download the video. So I gave the following command: youtube-dl -g https://www.youtube.com/watch?v=k4JGSAmu4lg ...
-1
votes
0answers
26 views

Why the Performace of Libre Office is much Lagger than Ms. Office & WPS Office?

Libre Office is the most feature rich office suite in GNU/Linux. But why the performance is much laggy especially when there is an picture or smoothed curve in graph (even in Wind*ws too)? I think it ...
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 ...
2
votes
1answer
108 views

How to hide command line output

I understand that computers work faster if they don't have to output data to the user, so I'm wondering if there is a way to hide the printed lines in the Terminal, and eventually just print any ...
4
votes
1answer
128 views

How do I diagnose a sudden slowdown

Running a particularly compute-intensive task on my computer (Tecra W50) for more than a few seconds causes it to become very slow. Performance does not return to normal after the task completes. ...
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 ...
118
votes
13answers
91k views

How do I optimize the OS for SSDs?

What steps should be taken before/during/after installation of Ubuntu on a Solid State Drive to optimize performance and ensure maximum durability of the drive?
2
votes
2answers
2k views

Lubuntu: laptop abnormally slow

My laptop is pretty new (less than a year) and has decent specs, but since 1/2 months it gets really slow even if I do things I could easily do before (development + browsing). This makes it ...
2
votes
1answer
21 views

Performance issues for 15.04

I am using a Dell Vostro 270s machine. It was running on 14.04 and I upgraded to 15.04 recently. 64 Bit, 4 GB RAM Most of the time switching between editor and browsers are horrible. It will be ...
3
votes
2answers
8k views

How to set cpufreq governor to performance?

I am on Ubuntu 13.04 64-bit. I have heard that setting the cpufreq governor to performance will, well, increase performance. Unfortunately, I am a bit of a newbie at this sort of thing, and I am not ...
2
votes
3answers
7k views

Gnome shell slow on a fast computer

The computer is an EliteBook 8540w: ATI FirePro 5800 (using proprietary drivers) i7 720qm 8Gb RAM OCZ Agility III SSD Ubuntu is freshly installed (a week ago). I have set swapiness to 10. When I'm ...
1
vote
1answer
126 views

Ubuntu very slow startup

My new laptop is taking very long (a few minutes) until it reaches the log-in screen. Here is the output of dmesg: http://pastebin.com/MuW79kVd I think the important part is the following gap in ...
2
votes
2answers
227 views

Worse compiz performance in Ubuntu 14.04LTS

I know this question has been asked multiple times before, but they seem to be like 3-4 years old now and I could not find any associated with Ubuntu 14.04. Also, solutions mentioned there do not ...
1
vote
0answers
41 views

Screen darkens, greys out, and freezes when running sofware centre or update manager

I'm running Ubuntu 15.04 on an acer aspire one 522 netbook. I do have a problem that a month of searching this Q&A Site still hasn't answered. Launching the Ubuntu or Lubuntu software centre or ...
0
votes
0answers
49 views

why root user use 100% cpu in ubuntu 14.04?

When I am using top command in Ubuntu system there is root user always use 100% cpu uses and display goes to black and system taking lot of times for other process.
0
votes
1answer
23 views

Slower boot after installation with encrypted home directory

I have installed Ubuntu 15.04 x64 recently. I have observed that in comparison to non-encrypted installation, the installation with encrypted home directory results in slower boot time: without ...
0
votes
0answers
29 views

Why does wifi USB dongle slow down USB stick file copy/transfer?

I am on Ubuntu 15.04 but my problem has been around for a long time in previous releases - I have a PC with a Belkin wifi USB dongle attached using the r8712u driver. Every time I copy a file, ...
1
vote
0answers
36 views

Do I have to install any additional driver for my usb 3 port in ubuntu 14.04 LTS?

I installed ubuntu 14.04 lts in my new laptop (HP 250 G3 Notebook). It has a usb 3 port with it, but surprisingly the speed of usb 3 and usb 2 is same. I have attached the output of lsusb Bus 001 ...
0
votes
0answers
74 views

Graphics Driver not satisfied

I have a dell 3542 with Intel® HD Graphics 5500 (Broadwell GT2). and in Ubuntu 15.04 my details says GRAPHICS Intel® HD Graphics 5500 (Broadwell GT2) .but i can clearly see a different in the ...
0
votes
1answer
49 views

Why do I get the same FPS with “optirun glxspheres64” in comparison with just “glxspheres64”?

vblank_mode=0 optirun ./glxspheres64 Polygons in scene: 62464 (61 spheres * 1024 polys/spheres) Visual ID of window: 0x20 Context is Direct OpenGL Renderer: GeForce GT 750M/PCIe/SSE2 218.417930 ...
0
votes
0answers
33 views

Kubuntu 15.04: Random lag spikes in all games

A couple days back, every game (Minecraft, TF2, GMod,...) I played on my laptop had unbelievable FPS drops for ~5 seconds to 1 FPS and then it went back to 30. I noticed when the FPS dropped the ...
0
votes
0answers
53 views

I don't have a graphics card in my machine. Can I still use Ubuntu?

I want to install Ubuntu 15.04 on my pc. My PC specs- 500 GB HDD Intel i3 2.93Gz processor No graphic card is present. Can I use Ubuntu with this Hardware configuration?
0
votes
1answer
18 views

How do I measure the total server resource usage for commands?

I am using Ubuntu 12.0.4 64 bit server edition and I have to measure the server performance for some specific programs. Is there a way to record the total System resource usage by a specific command? ...
12
votes
3answers
1k views

How to make faster first search at Unity-Dash? Way slower than second one

After a reboot, first searching at Unity Dash will be slower (15 sec) than the second search (seems instant), on my system at least. I guess this is because file index is cleared after a reboot and ...
0
votes
0answers
37 views

How can I profile Unity (lightdm) in Ubuntu 15.04 to help resolve performance problems?

I'm having some performance issues in Unity on Ubuntu 15.04. The Unity dash lags and many applications lag when being resized or fullscreened on 4k resolution. Let me preface this with a few things. ...
0
votes
0answers
60 views

Ubuntu Gnome doesn't run properly on my laptop

I'm using Ubuntu Gnome 15.04 and it's get hobbled sometimes. for example, when I try to move to some other window, it doesn't move smoothly, or when I watching a video on youtube - it's "spiky".. did ...
2
votes
2answers
46 views

nVidia GeForce 2 Aopen MX-400 64 Mb video card is slow [closed]

My motherboard burned out and I replaced it with another lga755 with a better processor, E8400 4 core vs E5200 2 core, with more memory, 6 Gb. The motherboard did not come with integrated ...
4
votes
3answers
9k 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 ...
6
votes
2answers
794 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 ...
0
votes
1answer
38 views

Performance problems with Ubuntu 14.04

My computer's performance (A 2012 Macbook Pro, i7 with intel hd 4000), specifically with gaming, has been lacking in Ubuntu compared to my other operating systems, OS X and Windows. I feel like this ...
0
votes
3answers
6k views

How can I figure out what polkitd is doing with so much of my system's resources?

I'm running 13.04 on an acer c7 (chrubuntu 12.04 install then two system upgrades) and now whenever I use my computer for more than a few minutes, it slows down as polkitd, dbus-daemon, ...
92
votes
6answers
213k views

How to check hard disk performance

How to check the performance of a hard drive (Either via terminal or GUI). The write speed. The read speed. Cache size and speed. Random speed.
0
votes
0answers
30 views

how to boost up ubuntu 14.04 performance in Sony VAIO E series?

I am using Ubuntu 14.04 LTS and getting very low performance. I have 4Gb RAM and intel core i3-2330M 2.20 GHz processor. Is it possible to improve performance?
0
votes
1answer
49 views

GUI for monitoring CPU usage (including L1/L2 caches) in real time?

Is there any GUI available in Ubuntu which shows detailed CPU usage, including L1/L2 cache usage? So that while running a custom program, I can monitor the CPU utilization in detail. The default ...
1
vote
0answers
55 views

Choose Different Screen Layouts with Latest NVIDIA Driver Dual 4K Setup

I just bought a ASUS PB287Q monitor and hooked it up (via HDMI) to my ASUS N550JK-DS521H. Everything works...but the performance of rendering on the external (right) monitor is terrible. So bad I can ...
1
vote
3answers
61 views

Speeding up ubuntu machine [closed]

Does below command improved performance of the machine: sudo sync && echo 3 | sudo tee /proc/sys/vm/drop_caches I know this is for freeing RAM. Please guide
1
vote
3answers
1k views

Problem with Hibernate on Ubuntu 11.10 slow

I installed Ubuntu 11.10 on my machine and I notice several problems with the Hibernate functionality. When I use s2disk/pm-hibernate, I see an embarrassingly slow wakeup from the hibernate state. I ...
1
vote
1answer
57 views

Sluggish Desktop Experience on Laptop with External 4K Monitor

I just bought a ASUS PB287Q monitor and hooked it up (via HDMI) to my ASUS N550JK-DS521H. Everything works...but the performance of rendering on the external monitor is terrible. The experience on the ...
0
votes
2answers
39 views

How do I deal with mplayer2 forwarding latency?

I use smplayer as default player on ubuntu 15.04, which is provided by mplayer2 now. It takes mplayer2 more than 3 secs to forward a video, which is unacceptable. On ubuntu 12.04 or 14.04 LTS, ...
2
votes
2answers
63 views

Compilation time slow on a single computer

We are experiencing some really slow compilation times on a single desktop computer that we use as the primary workstation for a research project. Compiling our codebase on this computer takes 42 ...
11
votes
6answers
32k 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 ...
0
votes
0answers
14 views

what is status “ fsnotify_mark_destroy ” in wait channel?

Recently Iam seeing lot of "fsnotify_mark_destroy" as the wchan state for process .May I know more details on this status
78
votes
7answers
90k views

How to empty swap if there is free RAM?

When I open a RAM-intensive app (VirtualBox set at 2GB of RAM), some swap space is generally used, depending on what else I have open at the time. However, when I quit that last application, the 2GB ...
2
votes
1answer
349 views

14.04, I have Disabled CPU throttling, but installing Atlas says: “CPU Throttling apparently enabled”

My PC is using ubuntu 14.04, and I need install Atlas. Atlas says: it need to disable CPU throttling, I have done the job to disable it. cat ...
2
votes
2answers
2k views

Occasional excessive IOWait freezes computer - how to diagnose?

I have a very slow SSD on an eeepc900A, and it occasionally freezes the OS (even the mouse pointer) with system monitor showing excessive IOWait. How can I diagnose what is causing this and should ...
0
votes
0answers
22 views

What should be my Wine configuration

I use a laptop with 3rd Gen CORE i5-2410M with 6 GB of RAM. I wanted to know what would be the best configurations(suggest me regedits and other things) for wine that could be done for playing games ...
5
votes
4answers
910 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 ...
0
votes
0answers
42 views

Slow performance (Ubuntu 14.10) on core i7 (mobile 3rd)and 8 GB of ram.(Asus k56cb)

community I been using windows for ages, but I wanted to try something new, and get some experience on Linux based OS. So I have formated my ssd and installed Ubuntu, installed updates and needed ...
2
votes
5answers
416 views

Switched from Windows XP to Ubuntu [duplicate]

I have a computer, below are the specs: RAM: 1GB DDR2 Processor: Intel(R) Celeron(R) CPU 2.53GHz Network Adapter: Intel(R) PRO/100 VE Network Connection (Ethernet) 500GB IDE HDD The computer is ...