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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3
votes
1answer
3k views

How to take advantage of VirtualBox paravirtualization in an Ubuntu guest?

I have an Ubuntu 14.04.3 (with linux-generic-lts-vivid (3.19) kernel) 64-bit host, and a VirtualBox guest with the same OS and configuration. The host has an AMD A10-7800 CPU. If I enable the KVM ...
3
votes
3answers
9k 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 ...
29
votes
6answers
35k views

Why most people recommend to reduce swappiness to 10-20?

I have seen in several site which recommend to reduce swappiness to 10-20 for better performance. http://community.linuxmint.com/tutorial/view/998 ...
0
votes
1answer
66 views

Ubuntu is fast at one moment, but slow at the other moment

I am using Ubuntu 14.04 on my computer that acts as a server. Short pc spec list (lshw): http://pastebin.com/7ud6rpxX The average number of procs is 500 (I have got a little widget that I forgot the ...
0
votes
0answers
24 views

Windows flickering, lag on window resize

I have a 3 Years old PC (GeForce GTX570, i7, 16GB RAM, SSD, 2x 24'' LCD monitors) and I installed Ubuntu 15.10 (I also tried with Mint). Depending on the graphic driver I installed, I got various ...
0
votes
0answers
18 views

Ubuntu running extremely slow on P4 1GB RAM. New Install. Used to run well previously

i am currently running Ubuntu 14.04 64 bit on a Pentium 4 with 1 GB DDR2 RAM. It used to run butter smooth on 2 GB RAM. Unfortunately I had to remove 1 RAM card to use in another old PC. And now, in ...
0
votes
0answers
38 views

Just upgraded from Ubuntu mate 14 to 16 and Xorg is chewing up my CPU… [closed]

Older Emachine that ran Ubuntu Mate 14 quite well. Upgraded to 16 and Xorg is making my system performance impossible. Any help is appreciated.....?
0
votes
0answers
7 views

How to make dragging windows not lagging behind?

I am new to Ubuntu and I feel my window manager (I've tried Unity and Cinnamon so far) is not fully responsive. In fact when I take a window by holding its title bar and moving it around, the window ...
-1
votes
0answers
76 views

Virtual GPU for Ubuntu 16.04 Clients on VirtualBox

Assuming the host OS has a GPU, can anybody tell me if Ubuntu 16.04 clients run using VirtualBox will be able to make use of the GPU through virtualization? I read that GPU virtualization is only ...
9
votes
3answers
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 ...
1
vote
3answers
4k views

Poor IO performance - PCIe NVMe Samsung 950 pro

I just finished a hardware build expecting a big gain from the new NVMe drive. My prior performance was lower than expected (~3gb transferred), so I've replaced the motherboard/cpu/memory/hdd. While ...
0
votes
2answers
715 views

Setting to High Performance

When I had Windows 8.1, there was a power option for "High Performance" which allowed higher performance at the cost of power supply. Is there a way to set my power option to "High Performance" on ...
-1
votes
0answers
726 views

Unity vs Gnome Shell performance in Ubuntu 16.04 LTS [closed]

Basic question So far I consider only RAM used while (first) running for comparing desktop manager. I don't know how to measure the speed fairly and independently. What are the aspects/items to ...
-3
votes
2answers
94 views

When can i use linux on my new computer? [on hold]

I have recently built a beast! however I am finding it very difficult to use Linux on it. I am still considered a noob for my level of Linux knowledge but I am not new to it. It is comprised mostly ...
6
votes
4answers
12k 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 ...
282
votes
39answers
255k views

How can I improve Ubuntu overall system performance?

What are your tips for improving overall system performance on ubuntu? Inspired by this question I realized that some default settings may be rather conservative on Ubuntu and that it's possible to ...
1
vote
3answers
35 views

Do I need to clear out swap to make my computer fast again?

I ran a process which used up mostly all my RAM and Swap... I was forced to kill the process, but now I see something strange, my Swap usage has decreased a little bit, but it is still half used while ...
0
votes
1answer
109 views

15.10 very slow during file operations, despite 16GB RAM good CPU and no apps running

Every time I move or extract a big file (example: 1GB), or when I delete a directory containing a lot of small files, Ubuntu becomes extremely slow: the mouse stops moving (or only moves after a ...
0
votes
0answers
33 views

Fresh Ubutnu 14.04 on External SSD slow

I installed a fresh copy of Ubuntu 14.04 onto a new USB3 connected SSD drive and it seems to be very slow. The slowdowns are particularly apparent when performing actions such as opening programs, ...
0
votes
0answers
19 views

kworker CPU hog - waking up from suspend

I have the (apparently very common) problem of 'kworker' hogging CPU usage. As mentioned here, the solution for many is identifying the problematic 'gpe'. This solution seems to apply to my situation, ...
19
votes
5answers
112k views

How do I improve the performance of my VirtualBox guest?

I run a guest ubuntu 12.04 on a host ubuntu 12.04, with VirtualBox, and the guest is much, much slower than the host (ALT+TAB takes 4-5 secs). I had a look around and I found contradicting opinions on ...
0
votes
2answers
180 views

Why is dash autocomplete (super key) slow on first usage?

I like the dash autocomplete feature (super/windows key) to open applications. But the feature is slow. In 90% of all cases I open keepass or pyCharm. But it takes several seconds to show the ...
1
vote
0answers
16 views

Tile server performance seemling inconsistant with SSH Launch vs 'Local' Launch

I am setting up a Dell PowerEdge R410 as a tile server (i.e. a server which serves web map images á la Google Maps) and experimenting with TileStache -- a Python application which handles HTTP ...
0
votes
0answers
18 views

Performance issue when turning the pc on but dissapears when restarting

I am new to linux. My problem is that when i turn on the pc it is terribly slow, but when i restart the performance normalizes dissapears and the performance normalizes. I had the same issue also in ...
4
votes
2answers
208 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. ...
0
votes
0answers
18 views

Graphics and CPU Performance Programs

Are there any applications similar to "Razer Cortex" or "nVidia Experience" that will run on 15.10? I really love playing Counter-Strike: Source and Counter-Strike: Global Offensive but they lag ...
1
vote
0answers
52 views

Android Studio & Emulator slow performance in Android Studio on Ubuntu?

On my mac Android Studio is usable, however on my Linux Ultrabook, normally a fast machine, Android Studio and the Emulator are so slow (5 mins to start, one response or less per minute) that they are ...
0
votes
1answer
512 views

Performance with Intel skylake 6500U with integrated graphics HD 520

I just got a new laptop (razer blade stealth) with the following configuration : Intel skylake i7 6500U Intel HD Graphics 520 8Gb of RAM 512Gb SSD 4k Display I know this question might seem too ...
9
votes
5answers
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
2answers
3k 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, ...
1
vote
1answer
70 views

Degrading streaming video performance (Google Chrome and 15.10)

I'm currently running Ubuntu 15.10 and the latest beta of Google Chrome 48.0.2564.48, and whenever I try and stream video through Chrome, performance drops off rapidly. I can start a video, but after ...
0
votes
1answer
56 views

Will xubuntu and lubuntu give better performance for software development tools

I have tried xubuntu and lubuntu and found battery sacing distro. Will these distros provide me enough performance for using software development tools like eclipse, netbeans, tomcats, xampp etc ...
0
votes
0answers
20 views

Performance Alerts

Is it possible & how do I, in Ubuntu to setup a performance monitor / event at a certain performance. I want setup a monitor that calls a .SH script on a couple of things the first and major one ...
1
vote
0answers
147 views

Strange cpufreq scaling issues: regardless of governor, max cpufreq drops incrementally on wake

I am running Ubuntu Mate 15.10 64bit (kernel 4.2.0) on a Lenovo y5070 with an i7-4710HQ cpu. I noticed recently (possibly after a recent dist-upgrade) that certain programs were really slow. After a ...
0
votes
0answers
11 views

What should be compared with ullimit -n

I know that max number of opened files per user is set in $ ulimit -n What is the right way to get a number to compare it with? My guess would be $ lsof | grep "REG" | wc -l but this number ...
0
votes
1answer
30 views

Slow display rendering on ATI Radeon with rotated display

I'm running XUbuntu 14.04 and I have a AMD Radeon HD 5450 graphics card and two Dell UltraSharp U2415 24" displays (1920x1200) where one display is rotated to be portrait. My system has never been ...
0
votes
2answers
61 views

Ubuntu lagging a lot in my laptop

I just installed Ubuntu on my PC, but it lags a lot. My pc runs all other OS at high speed, only Ubuntu is really slow. System specifications: Lenovo y_40 8 GB RAM 500 GB HDD Intel® Core™ i7-4510U ...
1
vote
1answer
130 views

Logical sector size for physical sector size of 4096

With many new hard drive disks the physical sector size is 4096. Would it be possible to make the system use a logical sector size of the same size, rather than the default logical sector size of ...
5
votes
1answer
1k views

SD Card Transfer very slow

I copied some MySQL-DB stuff to my Class 6 SD card. It needed 45 min. for the transfer. Same machine with XP it does it in a few minutes, with Win7 on another machine transfer is also fine. Checked ...
5
votes
2answers
3k 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 ...
0
votes
0answers
41 views

Performance mode in a Desktop enviroment

I'm running Ubuntu Gnome 15.10 x64 in a desktopPC. What really annoying me is that each restart or start begin running in a power-safe mode.. It could be useful with a laptop, but in a desktop ...
0
votes
1answer
330 views

Intel HD 520 really weak performance | Ubuntu 14.04 LTS

Using Lenovo e460 with i5-6200u + Intel HD 520. Performance is terrible, 20FPS on games I got 80+ in Windows (same settings) and even native linux games like CSGO. I've done all the updates etc, ...
0
votes
0answers
33 views

Why the screen is turning black and white in Ubuntu 14.04?

I am using Ubuntu 14.04. Frequently I am facing this issue of screen turning black and white for few seconds(20-30) and in that time I cannot use that application. I felt like(dont know this is ...
0
votes
0answers
37 views

Choppy windows, slow animation/performance

So basically I just did a fresh install of ubuntu 15.10, I installed a recommended driver, which is nvidia-352. I recorded a video to show what's happening http://www.youtube.com/watch?v=5BE7D4MOzF8 ...
0
votes
2answers
41 views

ubuntu 14.04 running slow on bootup and online

My apologizes right off is I do not know much about computers. My laptop crashed and was replaced by my sons college desktop computer that he built. we had a problem with windows XP on it and ...
0
votes
0answers
17 views

Massive throttling when switch from charger to battery on Ubuntu 15.10

When I watch a 1080p video on youtube, I got easy 60 frames/s. But when I plug out the charger the framerate drops below 20 f/s (even if battery is 100&). The governor is set to performance, but ...
19
votes
4answers
24k views

How do I monitor disk activity on a specific drive?

I'd like to watch disk activity on my USB external hard drive. I know that I can use iotop to monitor disk I/O for each running process, but is there a way to get a measure per filesystem?
11
votes
3answers
9k 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 ...
7
votes
2answers
8k 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 ...
0
votes
1answer
42 views

External Hard drive gets slow while copying lots of data

I have an external 5T drive where I want to copy my files (about 22GB). When copying the files everything runs well for a while and then it gets really slow (maybe because of the file size?): If I ...