1
vote
0answers
37 views

Linux Virtual Machine on VirtualBox suddenly running slow

I am running a VM using Virtual Box (version 4.2.26, but had same issue with v4.3.14) The VM was created using Vagrant. It runs headless, it just serves up websites and I use "vagrant ssh" to get to ...
0
votes
1answer
130 views

Centos running very slow in Virtualbox

I am running Centos 7 in Virtualbox 4.3.14. The VM is configured with 2 CPUs 4 GB RAM 3.10.0-123.4.4.el7.x86_64 kernel The host machine is running Windows 7 Pro SP1 64-bit Intel i7-4790 CPU, ...
0
votes
0answers
87 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 ...
0
votes
1answer
258 views

Grunt on virtualbox is extremely slow when editing files from shared folder's host machine

My setup consists of a virtualbox running Linux Mint 16 Mate as the guest and Windows 7 as my host. I am running bridged network types although this problem occurs on any network type I choose. I am ...
0
votes
0answers
113 views

How Can I Speed up Virtualbox?

I have a client who has multiple machines accesing a database on a guest OS on Virtualbox (XP). They call me all the time to complain about how their apps on their systems freeze randomly when ...
0
votes
0answers
529 views

VirtualBox on OSX: host unbearably slow

Even though my mac is quite new and well equipped, using virtualbox slows it down to a crawl. Here's an example: With Virtualbox open, running a Windows XP guest: ➜ uptime 9:19 up 2 days, 17:28, ...
2
votes
1answer
267 views

A fast modern network filesystem to replace VirtualBox's shared folder emulation

My work code repository is stored in host Linux system, and is accessed from Windows guest; currently, guest can access the repo via 'shared folder' which looks like a samba emulation. But, it just ...
1
vote
1answer
71 views

Virtualbox, consistent performance with numerous guests?

I have a quad-core computer and I'm running Linux amd64 as host OS. I want to run 3 guest Linux systems in VirtualBox, all with only one allowed CPU core, and 80% CPU cap, maybe I'll increase cap, ...
0
votes
0answers
45 views

Microsfot Virtual PC 2007 running 3 windows XP VMs on Dual monitors. VM screens freeze on each screen after twenty minutes

I am currently running three VMs on Microsfot Virtual PC 2007. After about twenty minutes the screen freezes where it is at and will not continue until I move the window the the other monitor. But ...
8
votes
4answers
6k views

Quickest way to merge snapshots in VirtualBox?

I have vdi with quite a number of snapshots taken from it - say, 50 or 70 snapshots. I want to have one plain vdi with a current state. These snapshots take way too much disk space and are not needed ...
1
vote
1answer
841 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 ...
1
vote
0answers
302 views

VirtualBox resource usage of guest machine

Is there any way I can measure CPU, RAM, DISK IO & other stats of Guest machine from any VirtualBox API? Means, the actual hardware stats. I run "top" in my Ubuntu guests to read stats in ...
2
votes
3answers
1k views

Performance VHD Windows 7 native vs hosted

I have tried two ways of working with my 30-40 GB dynamically expanding VHD which contains a Windows 2012 Server install: VHD mounted as boot volume Windows 7 as host os with VirtualBox as ...
3
votes
1answer
351 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
185 views

Expected performance degradation when accessing ORDBMS within VM as opposed to natively?

Is there a significant increase in latency when accessing an ORDBMS (namely Oracle 11g) residing in the guest VM (from the host), as opposed to natively? The development environment will be used ...
1
vote
0answers
137 views

2-thread Perl program slower if run using a RAMdisk within a Virtualbox?

I run a perl script inside a Virtualbox (both the host and guest OS are Windows 7). The Virtualbox has been given 4 CPUs out of 8 (everything runs on a Intel i7) and 3 GB RAM (out of 8 available). ...
1
vote
0answers
720 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) ...
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 ...
6
votes
2answers
171 views

Are virtual machines performant enough to be a primary workstation?

I have a MacBook Pro through my employer, but I prefer to spent most of my day in Linux. Will running Linux in a virtual machine (e.g. VirtualBox) in full-screen mode be enough slower than running it ...
0
votes
1answer
3k views

Performance considerations for a Windows 7 guest on a Ubuntu Natty x64 host: bitness (32-bit vs. 64-bit), guest settings and file access

I want to setup a virtual machine running Windows 7, for compilation and development of a native C++ application using Visual Studio. I have 8 GB RAM on the host with an Intel T9600 Dual-Core CPU, ...
0
votes
2answers
858 views

Windows 7 slow web browsing while downloading at top speed, what could it be?

I have the phenomenom, that whatever browser I take browsing is extremly slow. Downloading stuff however is fast with up to 1,2 MB/s. System is Windows 7 64-bit, Core i7, 16 GB RAM. When I start XP ...
0
votes
1answer
536 views

How anti-virus on the host machine affects performance of virtual machines?

I'm diagnosing some issue with Oracle virtual box where virtual machine sometimes perform terribly slow (much slower then notebook with worse configuration): Notebook i7 (2 cores with HT = 4 ...
1
vote
1answer
345 views

Howto manually force Windows 7 to work in the way as it had SSD vs hard drive [duplicate]

Possible Duplicate: Confirming that Windows 7 is using SSD optimizations I have a SSD and Windows 7 working in virtual environment (VirtualBox). Windows 7 works great with SSD but I wonder ...
0
votes
2answers
5k views

Why does my guest virtual machine keep freezing?

Background: In the past when my guest VM froze, I looked at windows task manager and saw very little ram. This led me to conclude "the host put the VM out of physical memory and into virtual memory ...
7
votes
2answers
6k views

How to decrease the CPU usage when running Virtual Box?

I am facing an issue with 100% CPU usage under my system when running VirtualBox. Here are some further details: My System Information: CPU 1 name: Intel(R) Pentium(R) Dual CPU T2310 @ ...
0
votes
2answers
467 views

Windows 7 host with Ubuntu Guest and a performance hit, memory locks?

I have a brand new Lenovo T510 with Core i5 and 4GB of RAM with Windows 7 on it. I Installed Ubuntu 10.10 in a Virtualbox. For some reason system gets really slow on this setup which makes me really ...
1
vote
4answers
773 views

virtual machines: optimal host os to run Windows XP guest os?

My department doesn't have the budget to upgrade my ailing Dell D620 laptop. However, I do have the option to buy my own personal computer, then use my company-issued ISO image to run Windows XP as my ...
3
votes
1answer
284 views

Best performance for small files on external drive?

Which bus has the best read/write performance for small files when used with an external drive? I'd guess eSATA, but the MacBook Pro in question lacks an ExpressCard slot. So it comes down to either ...
1
vote
2answers
171 views

Virtual machines on USB external disk

I'm thinking about installing (using Sun Virtual Box) Ubuntu 10.04 and Windows 7 on an external disk connected to the USB port of my new MacBook. Do you think perfomances will be terrific? Have you ...
9
votes
6answers
13k views

Is there an optimal setting for the number of CPU cores exposed to a VM?

VirtualBox, and possibly other VM software, allows the user to specify the number of CPUs exposed to the VM. In my particular case, I have a dual core CPU, with Windows 7 64-bit running natively, and ...