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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192 views

Ubuntu 15.10 64 is very slow on Four Core i7 16GB of Ram

I'm very new to Ubuntu. I came from a Macbook pro to a Dell Latitude E74400 i7 16Gb of ram. Ubuntu is terribly slow even if I reinstall it. It laggs when I work with it, opening multiple windows. ...
0
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0answers
92 views

Why my desktop Ubuntu system has lag when CPU is not full?

I have a desktop workstation installed with Ubuntu 14.04. It has i7-5820 CPU, 6 cores 12 threads. When I run my 10-threads code which takes up 80-90% CPU usage. (See monitoring statistics below). I ...
7
votes
1answer
328 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 ...
2
votes
2answers
255 views

Ubuntu extremely slow on high end PC

So I finally got to installing ubuntu on my PC at home. Installation went fine, smooth and all. When I finally rebooted into the OS everything was terribly slow. I started by installing the latest ...
1
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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
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0answers
60 views

System performance drop when adding a second monitor (zbook - ATI)

i have been trying to find a solution for this but can't quite make sense of it. I have a Zbook14 with hybrid ATI/Intel graphics card (AMD Radeon R7 M260 Series). Everything works like a charm when ...
5
votes
3answers
102 views

If I compile Firefox instead of binary install it will work faster? [closed]

Many times I hear that software compiled at my hardware will work faster at my hardware. Can I win 10% of performance of Firefox or Chromium if compile from source?
0
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0answers
319 views

Gnome 3.18 Activities overview and application list very slow with Ubuntu 15.10

Ok, any help would be great: After updating to 15.10 and Gnome 3.18, the activities overview has become very unresponsive. Arranging windows from desktop to desktop is slow and when opening and ...
3
votes
1answer
4k 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 ...
0
votes
0answers
14 views

starting apps from kde menu are delayed about 2 seconds?

I got an immediate start when I do run applications like dolphin from terminal but when I do click on them in KDE menu it takes about 2 seconds to fully run, I see the icon beside cursor bouncing ...
1
vote
0answers
146 views

Poor performance thinkpad E550

Hi I have just bought a lenovo thinkpad E550, and installed Ubuntu 14.04 onto it but I am running into major performance issues. Like 8 + seconds to launch any application from startup, Firefox runs ...
0
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0answers
34 views

Unable to install ATLAS even after disabling CPU throttling [duplicate]

I am trying to build a computational tool called SU2 from source on my Ubuntu 14.04.3 and it has many prerequisites, ATLAS being one of them. Being new to Ubuntu, I followed this guide for ...
0
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1answer
38 views

Obtaining better performance? [duplicate]

i'm a Lubuntu 14.04 user. I have some trouble about my CPU going to a high % usage while doing simple things like launching firefox. I would some advice if there is some fixing that I can do to ...
0
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0answers
28 views

Slow Perfomance overall

could anyone tell me how to improve my system performance? It is very slow and I do not know the purpose of it. One idea that comes to my head is that my laptop is quite old, but I can recall that a ...
0
votes
0answers
591 views

Very poor performance drivers for Intel® HD Graphics 4600

I am new to Ubuntu and Linux. I have a HP Envy 17'' laptop and it comes with an i7-4710HQ processor with integrated Intel® HD Graphics 4600. I have Ubuntu 15.04 installed and I also installed the ...
-3
votes
1answer
104 views

What the difference between performance the of Ubuntu 14.04 LTS and Windows 10? [closed]

I want to know the difference between performance of Ubuntu 14.04 LTS with Windows 10. Features like RAM, interact with hardware, CPU usage, shutdown delay... etc.
0
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0answers
78 views

Slow performance on HDD - need advice how to tune it!

I have a MyCloud with a 3TB harddrive. It's incredibly slow when transferring large files over the lan (files about 1gb, give or take a few MBs). I think it has to do with the read/write-speed of the ...
0
votes
0answers
136 views

Slower than advertised SSD performance

I've just assembled new machine: Asrock AM1H-ITX, AMD 5350 with AES-NI, 8GB RAM, Samsung 850 EVO 120GB SSD Elementary OS based on Ubuntu 14.04 Advertised read/write of the SSD is something around ...
1
vote
1answer
350 views

Docker performance on ubuntu host 2x+ worse than OSX host

Ok, let's start over after a bunch of investigation. Here is what we know: Ubuntu host 15.04 on i7 3820 (quad 3.6) and Samsung 850 pro SSD 512gb SATA 6 $ docker info Containers: 2 Images: 101 ...
1
vote
2answers
110 views

Ubuntu is very slow after a few years

I installed ubuntu a few years ago. In the first days it was very fast compared to windows. However it goes slower by time. It takes more than 1 minute to see the desktop. Chrome takes around 30 ...
0
votes
1answer
59 views

Long running kiosk application eats up memory without freeing it

I've a long running application built with PHP/HTML/CSS3/JS running on Chrome on a Ubuntu Server 14.04.03. I've set everything up to make it work and let it run for some days. I've noticed something ...
0
votes
0answers
89 views

Different performance of identical virtual machines

I have a desktop and a laptop both with i7, with 64-bit Win-7 OS. I installed VirtualBox with the same Ubuntu VM with exactly the same resources. I ran the same program into both VM's. The desktop is ...
0
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0answers
126 views

Is it possible to name the fastest virtual machine?

If yes, what is it and how is the performance of VM measured ? If no, please explain why it is impossible. I have an idea to test several VM by running C code and measuring time. One more thing, how ...
8
votes
3answers
10k 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 ...
0
votes
1answer
106 views

Just installed Ubuntu 14.04 and it is extremely slow, painfully so

I just installed Ubuntu 14.04 (32 bit, as that was recommended for 2gb or RAM or less) on a Acer Veriton N281G D425 Intel Atom 1.8GHz 2GB RAM and a 500GB HDD. This is a small box computer that I got ...
0
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0answers
46 views

Issue with resume from suspend

Hello Ubuntu, I am using Ubuntu 14.04 in Dual boot configuration, alongside Win 10. My machine is an Dell Inspiron 7537. My questions are based on following : Resuming from suspend ...
0
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1answer
33 views

Can we find out the software components which are currently resident in the memory.

Can we find out the software components which are currently resident in the memory. If yes, how? Any command to find the software components?
4
votes
2answers
168 views

How to find the maximum data transfer rate possible from the RAM of my laptop

How to find the maximum data transfer rate possible from the RAM of my laptop. I am using Ubuntu 14.04.
0
votes
0answers
35 views

How to test the performance of various software raid levels?

I am getting ready to reformat and reinstall the OS on my machine. I run a Postgres server on it that it mostly reads and not a lot of writes. It is backed up to external devices frequently so the ...
1
vote
1answer
69 views

Monitoring resource usage by single application over period of time

I am looking for an utility which can monitor the resource usage (CPU & RAM) by an application. I have an third party application which runs as service, once started, it will receive requests ...
0
votes
0answers
20 views

Poor performance from Network adapter with wireless connections?

I'm facing performance issues with my wireless network adapter (or drivers, I'm not sure) on Ubuntu 15.04 and now recently, on my elementaryOS Freya installation. The same works fine when I log into ...
0
votes
0answers
206 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 ...
2
votes
1answer
131 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 ...
2
votes
1answer
38 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 ...
1
vote
0answers
89 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
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0answers
116 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
96 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
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0answers
121 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
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0answers
161 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
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0answers
148 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
0answers
103 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
1answer
202 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
66 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
35 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? ...
0
votes
0answers
141 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
282 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 ...
4
votes
2answers
210 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. ...
2
votes
2answers
78 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 ...
0
votes
0answers
56 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
239 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 ...