0
votes
0answers
42 views

Hardware concerns for optimal ruby on rails development on ubuntu machine

I've been developing dynamic web sites using ruby on rails on a 5 year old mac mini which has been great except that it takes too much time -- 15 minutes or so -- to run my simple test suites. I ...
0
votes
0answers
71 views

Delphi XE2 runs very slow in VirtualBox with Windows 8.1 installed

While the whole guest Windows runs normal, Delphi XE2 is really slow, especially with code completion. And CPU utilization is near 50% though the Delphi itself does not get more than 10% during ...
-1
votes
1answer
89 views

How to increase performance of a computer? [closed]

Currently I use Lenovo G62 laptop which runs on Windows 7 Home Premium. It has a 3 GB RAM and Intel i5 processor. Also Ubuntu 12.04 is installed along side Windows. For some days my laptop is really ...
0
votes
1answer
40 views

Massive slowdown in HDD

I was running a multi-threaded program that makes huge amount of I/O operations, Basically reading/writing Millions of files. I had some problems/bugs and I used to halt the program to fix something ...
0
votes
2answers
85 views

Ubuntu 13.10 - make eth0 or wan0 interface upload/download into slow motion for testing software

I have a software where i need to test by making some low speed internet, very limited upload/download, after some time auto disconnect and reconnect such scenarios. I have found that i can try wanem ...
1
vote
1answer
170 views

New graphics card much slower than the old one?

According to this website the Radeon R7 graphics card I just installed should be considerably faster overall than the GeForce GTS 250. However, when testing the card on Ubuntu playing Minecraft, it ...
1
vote
1answer
381 views

Ubuntu runs very slow

I have been using Ubuntu 13.10 32-bit for a month. It's working fine, but since two days ago it hangs more than ever, and it sometimes runs very slowly. For example, when a window closes it slowly ...
0
votes
0answers
42 views

How to increase IO for operation “SELECT”?

I use windows server 2008r2 with role Hyper-V. The guest system is Ubuntu 12.04 LTC (64 bit). It is situated on the dynamic virtual hard disk /dev/sda. There is postgresql-9.1 (amd64) on the Ubuntu ...
0
votes
3answers
806 views

VMWare vs Dual Boot

I have a Lenovo Y510p having 8GB of Ram, 4th Generation Intel Core i7, NVIDIA GeForce GT755M GDDR5 2GB, and 1TB of HDD. It has Win8 on it. I need to use Ubuntu also. So i am thinking of dual booting ...
2
votes
1answer
402 views

Clear cache of virtual machine

I already posted this on StackOverflow, but it was flagged as Off-Topic. Maybe you guys are able to help me. I'm currently doing some database benchmarking on a virtual machine running Ubuntu 12.04. ...
0
votes
1answer
42 views

Ubuntu - Hot to bind an action to perform when high CPU temperature in Ubuntu?

Im using Kubuntu 13.04 - by default it just shutdown system, and I want to set it to suspend, to avoid loss of work progress. How can I do this?
0
votes
1answer
801 views

Performance loss when using WINE? Can windows > Ubuntu really account for it? [closed]

I have been considering a switch to ubuntu and also running a LAMP(Small PHP deployments, mainly for learning purposes) stack over it. Though it is my own personal PC, and i'd also want to run my ...
1
vote
1answer
734 views

Running Ubuntu with a WIN7 VM in order to use Photoshop

I'm a front-end dev who basically codes html/css/php; I have a Vaio Laptop and I chose to go with Ubuntu because of the ease of use of tools such as Git, the possibility to do native testing with a ...
0
votes
2answers
756 views

rm -rf extremely slow & slows down server

I did a rm -rf foldername in an attempt to delete a folder containing 10,000s of 25KB files. Question Why is it taking so long (Almost 30 minutes)? Why did the server became extremely slow, even ...
3
votes
1answer
152 views

Virtualizing my multi-boot computer [closed]

I've been using dual boot with Windows and Ubuntu for a long time. To kill the troll before it growls, I won't stop using either any time soon, as both have pros and cons. Now, as virtualization ...
3
votes
1answer
337 views

Terrible multi-threaded performance in Kubuntu in VirtualBox in Debian machine

We have an unpleasant performance issue when running our multi-threaded rendering software inside a virtual machine. We are running Kubuntu 12.04 in a VirtualBox 4.0.10_Debianr72436 which runs ...
0
votes
1answer
444 views

graphics performance in ubuntu virtual machine running windows

i will keep this as simple as possible: My gfx card if radeon x1800gto. It's a decent card with decent gaming performance in windows. Right now, ubuntu does not get any newer proprietary drivers ...
3
votes
1answer
149 views

How can I pin point a USB file transfer bottleneck in Unix?

I'm experiencing very slow data transfer speeds over USB 2.0 on my nix box and was wondering how I can pin-point the cause of the problem. I've looked into iotop and top but the cpu and mem figures ...
0
votes
0answers
101 views

Incredibly slow response when reading from mounted shared network (windows share) drive within Java application

I wrote a Java application that checks and indexes huge archive files. When i test it on my local machine, everything is speedy and works like a charm. However, i need to process large quantities of ...
1
vote
0answers
707 views

Poor VirtualBox performance on Windows 2008 R2

I'm running a Ubuntu Server VM on a Windows 2008 R2 host, and I'm getting very poor I/O performance. See the following screenshot that shows my processes are severely I/O bound (i.e. 96.0% wait) ...
2
votes
1answer
113 views

Why system still hangs/slows after process is finished?

My OS is Ubuntu 12.10 64 bit. I have experienced this issue for a long time, with all previous versions of Ubuntu as well. If I launch a process, which takes up all the memory and when finished, the ...
1
vote
2answers
293 views

Which us best for Linux performance: install operating system on SSD and use HDD for media, or other way around?

I've a machine with two HDD's and a 40 GB SSD that I wish to install Ubuntu Studio on. Which setup makes more sense? OS installed on SSD. Media on HDD. Media on SSD. OS on HDD.
3
votes
3answers
3k views

Ubuntu 12.04 VirtualBox on powerful W7 quite slow

I own a Thinkpad T420s with 8GB RAM, 160 GB SSD and a quite fast i7 processor. Summa summarum a very fast computer that works perfectly. Now, I am not very impressed by the performance of my Ubuntu ...
2
votes
1answer
3k views

Is there a way to disable Intel SpeedStep steppings on an Ubuntu Server using a command line application?

We cannot disable it using the BIOS, because Turbo gets turned off as well as a side effect (what a crappy BIOS!). I am looking for a simple command line tool for Ubuntu 12.04 LTS Server that can do ...
1
vote
1answer
753 views

Why does Xubuntu's 'hdparm' command not return a faster result for my SSD (Crucial m4)?

Here is my output: sda is an m4 Crucial SSD sdb is a 7200rpm hard disk Should I not be expecting fast performance from the SSD? Is is using TRIM and noatime. Both drives are formatted as ext4. ...
0
votes
3answers
480 views

Lightweight ad-blocker for firefox [closed]

On a old machine (512 MB RAM) I am currently running ubuntu jaunty and firefox 3.0.15. I tried the ad blocker addon add block plus but it eats lots of RAM (>300 MB). Is high memory load of this ...
1
vote
1answer
2k views

Ubuntu slows terribly on disk access

I'm very new to Linux systems but not computer systems. I installed Ubuntu on my laptop and it took a little longer to load then I'd like but seemed okay. The problem showed itself more seriously when ...
0
votes
1answer
215 views

Ubuntu - inconsistent performance with software raid-1

I'm installing a new system using soft-raid 1 with two physical disks. While running a few tests (after waiting for the initial sync to complete) I found the harddrive speed was highly inconsistent. ...
2
votes
1answer
419 views

Why only my PuTTY scroll slow on ubuntu 10.04 running under VMware?

Scrolling up in PuTTY is very slow even just after starting and connecting. I've tried black listing the VGA16 frame buffer that showed on 'dmesg | grep -i frame' output. It is not used now but this ...
0
votes
0answers
350 views

Slow internet on one computer (Ubuntu) but not the other (Windows 7)

I've been having a problem for the past week or so regarding my internet connection. I have a 10MB/s virginmedia broadband that's really fast when I'm the only one to use it (with an Linux machine). ...
0
votes
1answer
177 views

Which drive should i install the host operating system on Dell PowerEdge 2950

I have a Dell PowerEdge 2950 and there are 3 SATA 7200 drives (2 x 1TB, 1 x 300GB) and one SAS 15k drive (1 x 300GB). I want to install Ubuntu as the host OS with several guest OSes. Should I ...
1
vote
1answer
1k views

ffmpeg not using full CPU power

I have a Dell Precision 490 workstation, running Ubuntu 11.10, with two dual core Xeon 5160 CPUs (so 2 physical CPUs, with 2 cores each), which I am using to encode TV recordings (MPEG2) to H264 using ...
1
vote
1answer
1k views

Why is my network slower on Ubuntu?

I'm encountering a strange phenomena in Ubuntu 11.04. My Thinkpad x220, has two operating systems installed, Ubuntu 11.04 and Windows 7. In Windows, everything is OK. My network speed is very fast, ...
3
votes
1answer
285 views

Ubuntu experience feels sluggish on modern hardware

I've installed Ubuntu on my home workstation (HP Z400 with ATI Radeon HD 5800). At the mercy of the prompt, I agreed to installing the ATI/AMD proprietary FGLRX graphics driver. One would think that ...
1
vote
1answer
220 views

Spurious high disk IOrate alerts from remote server

I have a server running on linode. The server is a headless Ubuntu 10.0.4 64 bit installation. I have recently started getting high disk I/O alerts from the server. As far as I know, nothing much has ...
6
votes
3answers
3k views

Google Chrome briefly hangs before rendering a new tab

Whenever I want to switch to a tab other than the one that is being rendered, Chrome hangs for about 2 seconds before rendering the new tab. This occurs whenever a new tab has to be showed, such as ...
1
vote
0answers
364 views

Getting Realtek drivers to reach Gigabit speed under Ubuntu is nigh impossible

I have a HP Touchsmart TM2 2105 laptop, quite recently bought. The NIC is Gigabit speed capable, with a Realtek R8168 chipset. I installed the drivers from Realtek, it works, ethtools indicates ...
4
votes
1answer
524 views

How to find out which processes consume most energy on Linux

In Linux, is it possible to know which processes consume most battery energy at the moment?
0
votes
1answer
145 views

Am I taking a performance hit from virtualizing in an Ubuntu Host installed via wubi?

I decided recently that since I virtualize all my programming environments there is basically no reason for me to be running Windows as a host OS. So, to get me started I installed Ubuntu via wubi and ...
9
votes
4answers
3k views

Is (Ubuntu) Linux file copying algorithm better than Windows 7?

Windows Copying is a real mess ever since Windows Vista. Even Microsoft claims they've improved the performance, from a user perspective, it's not quite visible. Even with single file the copying ...
9
votes
3answers
2k views

Bash completion makes bash start slowly

Starting a bash on my ubuntu system takes about 2 seconds. If I remove loading /etc/bash_completition in .bashrc it starts without delay. Of course I don't want to give up completition and I don't ...
0
votes
3answers
623 views

How can I optimize ubuntu desktop to run my webserver [closed]

I am using ubuntu desktop edition to run My drupal website on Intranet. I know for running web servers best thing to install is ubuntu server editions, but due to some problem i am using Desktop ...
1
vote
2answers
1k views

performance gain while running ubuntu from usb disk or running as virtual machine?

I have 64bit laptop, running windows 7 64 bit operating system with 7200 RPM Hard drive. I have Vmware installed on Windows 7, and I am using the Ubuntu 10.10 as virtual machine. Performance seems ...
2
votes
1answer
4k views

How important is dual-gigabit lan for a super user's home NAS?

Long story short: I'm building my own home server based on Ubuntu with 4 drives in RAID 10. Its primary purpose will be NAS and backup. Would I be making a terrible mistake by building a NAS Server ...
1
vote
1answer
473 views

Ubuntu Maverick vs Preload

Does it make sense to use "preload" service in Ubuntu Maverick? I have it installed and running with no errors in /var/log/preload.log. I don't like waiting much for applications to start when I ...
1
vote
2answers
2k views

Slow running Ubuntu 10.10 laptop

I have a slow computer. When I click on an icon say Firefox it can take 10 seconds to load. when I minimize and maximize windows you can see it happening. I get "ghost" screens where you see the ...
1
vote
1answer
2k views

Ubuntu performance is bad with cryptsetup/lvm setup

I currently have the following setup on my laptop - harddrive is divided in 3 parts, first one is a /boot for my ubuntu, third one is a windows installation, and one in the middle is a encrypted ...
3
votes
3answers
4k views

Ubuntu: tool for displaying disk activity in general and by process

My Ubuntu system is occasionally becoming very sluggish. I'm running many things simultaneously and it's very difficult to tell which program is the culprit. I suspect that the sluggishness is due to ...
0
votes
1answer
1k views

HD 1080 performance on Ubuntu 10.04 under dual core VS quad core i7?

I am preparing to purchase a new laptop, with Ubuntu 10.04 built in, from System76 with 8.0 GB DDR3 1333 MHz RAM, ATI 4570 graphics with 512 MB GDDR2 memory, 500 GB 7200 RPM SATA II hard drive, and I ...
0
votes
2answers
417 views

Boot up process in Ubuntu

I am using ubuntu 10.04. When I had installed the OS it hardly took 20 secs to boot. Later on I started installing s/w like apache server, mysql server, bacula server, dictionary server, etc. And now ...