0
votes
1answer
117 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
17 views

Which disk IO operations are typically executed when working with flat preallocated VMDK

I usually pre-allocate whole disk space when creating my VMs and usually as flat single files. Since I'd like to move my VMDK to a different drive than my primary I would like to put it on one that ...
1
vote
2answers
95 views

What will give the most increase in Virtual Machine performance?

Our IT staff has been given the task of improving the performance of all of the VM's used at our company. This includes those remoting into a hyper-v server and those using their own VM's on their own ...
0
votes
0answers
104 views

Speeding up VM performance

I have a Mid-2012 MacBook Pro, that has an Intel Core i7-3651QM @ 2.30GHz, with 16GB 1600Mhz DDR3 memory and a SSD running VMWare Fusion for doing development work with. The VM runs almost as ...
1
vote
0answers
51 views

Can you explain me VMWare Performance Counters in Windows?

I am having a guest Windows Server 2008 R2, i.e. VMWare virtual machine Can you explain me VM counters vs. non-VM-ones, in the case of "% Processor Time" (under "VM Processor" section) vs. "% ...
3
votes
0answers
103 views

How can I get a closer to real time performance on a virtual machine in VMWare Workstation?

I am running an Ubuntu Server 13.04 installation in a virtual machine on my computer, the one thing that pushed me into it's creation was the need to host a VPN and allow more than one user on it, and ...
0
votes
3answers
963 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 ...
3
votes
3answers
257 views

Can slow VM be due to CPU, even if its utilisation percentage is low?

I run 2 VMs. Those two VMs are not doing any CPU intensive tasks, and the host machine has a Sandy Bridge Celeron CPU, 8GB of DDR3 RAM and conventional HDDs. When I checked the CPU usage, it is not ...
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, ...
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 ...
0
votes
1answer
465 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
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 ...
1
vote
0answers
250 views

At what point does RAID 0 stop being fast and just become dangerous? [closed]

I have an interesting RAID setup across 2 harddrives on my home computer. I have /tmp and a mount point(/home/machines) for virtual machines (along with a few other mount points). These partitions I ...
2
votes
2answers
755 views

Would a graphics card increase performance of Virtual Machine?

I'm using VMWare Player to run a Windows 7 VM on a Windows 7 host. I have Aero turned on and it works pretty well for the msot part but sometimes if I'm moving too fast or min/maxing a window I can ...
0
votes
0answers
366 views

CentOS VM is slow on Windows 7 64-bit

Setup/version numbers Guest OS: CentOS 6.0 64-bit (installed from LiveCD) RAM: 1 GB Processors: 1 Hard Disk: 20 GB Host System: Lenovo T410 OS: Windows 7 Professional, 64-bit (Build 7600) ...
1
vote
0answers
525 views

Virtualized guest vs host CPU usage

I am using qemu with kvm as my hypervisor. I am running a gentoo guest on an ubuntu host. The guest is being given a single processor. When I run a compute intensive job (say empty-loop) I get almost ...
1
vote
3answers
2k views

Seagate Momentus XT hybrid drive and VMWare virtual disks

I would like to know how does Seagate Momentus XT see virtual disk? As a single huge file (size depending on virtual disk type) As individual file within this virtual disk? If the first one is ...
8
votes
2answers
12k views

Running a VM off a USB 2.0 Flash Drive - Mac/Parallels/XP

I use a MacBook Air as my primary machine, and the 128GB SSD means space is precious. To save about 10 GB, I've been running Parallels with a Windows XP VM off an external USB hard drive, which ...
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 ...
1
vote
2answers
437 views

Breaking XP into its fastest form

I'm using a program called Quemu to run a virtual machine on another computer of mine. The computer I'm using this on is slow and has a lot of admin locks on it. I've gotten a copy of Windows XP to ...
2
votes
2answers
711 views

Does moving a virtual machines swap file to another drive really improve performance?

The scenario: A virtual machine (guest) running Windows 2008 R2 has a virtual hard drive with the swap file (by default) on that drive. Recommendation: Create another virtual hard drive that is ...
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 ...
0
votes
1answer
512 views

MacOSX SSD potential performance issues (TRIM) with VM guest OSes

So, back in September of last year, I was pretty sure I was going to buy an SSD for my MacBook Pro (2009); here's my previous post. I decided to hold off and wait for Intel and OCZ to release their ...
5
votes
4answers
1k views

What is the best VM for developing WPF apps from within OS X?

All of my machines are Macs (Mac Pro, MacBook Pro, MacBook Air and Mac Mini (and Apple TV 2.0 too! :) ) but for my day-job, I develop .NET/WPF applications. Normally I just boot into Boot Camp and ...
1
vote
4answers
2k views

Where can I find a comparison of the performance of various Virtual Machines?

BACKGROUND: I am running Windows 7 Ultimate x64 on a fairly powerful multi-core CPU with plenty of ram. This is not a question about resource usage. I assume that all VMs have pluses and minuses, ...
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 ...
1
vote
4answers
772 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 ...
0
votes
1answer
681 views

Will the new 13" MacBook Air be enough to develop on and run a LAMP server in a Virtual Machine? [closed]

I'm in the market for a new Mac notebook, and I really like the form factor of the 13" MacBook Air, as I'll be biking with it every day. I currently have the 2009 15" MacBook Pro, which is powerful ...
1
vote
2answers
719 views

Slow SSH to Virtual Machine

I have a 256 slice VM from Slicehost that is often incredibly slow to respond to key presses over ssh. It can take as long as 3 seconds to type "ls". From what I can tell, my VM doesn't seem to be ...
2
votes
1answer
117 views

Optimizing memory usage across multiple similar VMs

Let's say I have four VM's open, each running an identical version of Windows. Under my current setup, the guest OS will be loaded into memory four times. Much of that is wasted space. Using any VM ...
3
votes
3answers
552 views

increase performance of virtual machines on the 27" imac

I'm using a 27" iMac (i7, 8GB RAM) at work and normally run two or three virtual machines at the same time, which hurts the performance of each virtual machine. I've learned on these forums the best ...
0
votes
2answers
705 views

difference in performance: virtualbox os and local os

Is there a specific difference in performance between an OS installed on a Virtual Box and an OS installed locally on a computer? Is there any formula so that I could know what is lost when you ...
1
vote
1answer
2k views

VMWare Pre-Allocated vs. Growable, which is faster?

In an effort to increase speed in my Vmware setup, I was thinking about converting a Windows XP Guest 32 bit I have from growable to pre-allocated, I'm currently running VMWare Workstation 7 with ...
2
votes
5answers
559 views

VM software that doesn't clog the host OS?

I'm trying to setup a few CMS distributions on a linux box. And I have to do some serious development on it. But my main machine is running Win7 so I was thinking about virtualization. But I do not ...
8
votes
2answers
843 views

Virtual Machine optimizers [closed]

I have read a discussion about musthave Windows software. User esabine addend a link to Scott Hanselman's tools list. One of the tools Scott was writing about was an optimizer tool for VM’s. - ...
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 ...
0
votes
2answers
130 views

Should I be able to install Virtual PC without my laptop grinding to a halt?

As much out of curiosity as anything else, a few weeks ago I installed Virtual PC on my old ThinkPad T41 and although I only set up a single W2K VM and have hardly touched it since, I've noticed that ...