Can GPU capabilities impact virtual machine performance?
- by Dave White
While this many not seem like a programming question directly, it impacts my development activities and so it seems like it belongs here.
It seems that more and more developers are turning to virtual environments for development activities on their computers, SharePoint development being a prime example. Also, as a trainer, I have virtual training environments for all of the classes that I teach.
I recently purchased a new Dell E6510 to travel around with. It has the i7 620M (Dual core, HyperThreaded cpu running at 2.66GHz) and 8 GB of memory. Reading the spec sheet, it sounded like it would be a great laptop to carry around and run virtual machines on.
Getting the laptop though, I've been pretty disappointed with the user experience of developing in a virtual machine. Giving the Virtual Machine 4 GB of memory, it was slow and I could type complete sentences and watch the VM "catchup".
My company has training laptops that we provide for our classes. They are Dell Precision M6400 Intel Core 2 Duo P8700 running at 2.54Ghz with 8 GB of memory and the experience on this laptops is night and day compared to the E6510. They are crisp and you barely aware that you are running in a virtual environment.
Since the E6510 should be faster in all categories than the M6400, I couldn't understand why the new laptop was slower, so I did a component by component comparison and the only place where the E6510 is less performant than the M6400 is the graphics department. The M6400 is running a nVidia FX 2700m GPU and the E6510 is running a nVidia 3100M GPU. Looking at benchmarks of the two GPUs suggest that the FX 2700M is twice as fast as the 3100M.
http://www.notebookcheck.net/Mobile-Graphics-Cards-Benchmark-List.844.0.html
3100M = 111th (E6510)
FX 2700m = 47th (Precision M6400)
Radeon HD 5870 = 8th (Alienware)
The host OS is Windows 7 64bit as is the guest OS, running in Virtual Box 3.1.8 with Guest Additions installed on the guest. The IDE being used in the virtual environment is VS 2010 Premium.
So after that long setup, my question is:
Is the GPU significantly impacting the virtual machine's performance or
are there other factors that I'm not
looking at that I can use to boost the
vm's performance? Do we now have to
consider GPU performance when
purchasing laptops where we expect to
use virtualized development
environments?
Thanks in advance.
Cheers,
Dave
