Problem: bad 2D performance in Windows VM versus Windows on bare metal
For the past few months I noticed sluggish 2D graphics in my Windows 10 VM, something that hadn’t happened before. Below are the Passmark 8 results and comparisons between different configurations/releases: Continue reading “Low 2D Graphics Benchmark with Windows 10 (1803) KVM VM”
I recently upgraded from Linux Mint 18.3 to the latest version, Linux Mint 19. I did this so I could test and eventually update my VGA passthrough tutorial. There was no other practical reason for me to upgrade.
I did the upgrade twice:
- Using the mintupgrade tool provided by Linux Mint. This allowed me to upgrade my existing Linux Mint installation and all installed applications.
The upgrade went surprisingly smooth, with only minor glitches. However, in the end I decided to reinstall the Linux Mint 19 system from scratch (see 2. below).
- Install the entire operating system from the downloaded ISO, while preserving the /home director (my user directory) and all other data.
This was quite a pain in the neck, as it turned out.
Continue reading “Upgrade to Linux Mint 19 (Ubuntu 18.04)”
I’m running Linux Mint 18.3 which is based on Ubuntu 16.04 Xenial. Until yesterday I used the Personal Packet Archive ppa:jacob/virtualisation to get more up-to-date releases of Qemu, libvirt, and virt-manager.
Ubuntu and Linux Mint recently released security updates for their official (but old) qemu and libvirt packages to address the Meltdown and Spectre vulnerabilities. Unfortunately the Ubuntu 16.04 releases in the ppa:jacob/virtualisation archive have not been updated, judging from the upload date. Continue reading “Qemu and libvirt security – ppa:jacob/virtualisation”
This is yet another benchmark of my Windows 10 VM. This time I used the free Mersenne Prime Search software Prime95 (mprime under Linux) available at www.mersenne.org. I wanted to see if there is a significant difference between running the benchmark on the Linux host, versus the Windows virtual machine. Continue reading “Prime95 Benchmark: Linux Host versus Windows VM”
Benchmarks help us compare the performance of different hardware configurations as well as drivers and operating systems. With regard to virtualization, benchmarks can be particularly useful in quantifying performance differences between an operating system running on a virtual machine versus the same OS running directly on the underlying hardware. Continue reading “Windows 10 Benchmarks (Virtual Machine)”
In my Running Windows 10 on Linux using KVM with VGA Passthrough tutorial I introduced different options for using the keyboard and mouse with the Linux host and the Windows VM. Running a virtualized Windows VM means running two separate systems – the Linux host and the Windows VM – both of which require input and output devices. Continue reading “Virtualization Hardware Accessories”
I’ve written several tutorials on “how to make dual-boot obsolete using VGA passthrough“, yet one may ask why run Windows on Linux? Most PC or laptop come pre-installed with Windows, in fact its rare to see computers pre-installed with Linux. So why not just leave Windows and install Linux in a virtual machine (VM), for example using Oracle VirtualBox?
Installing Linux in a VirtualBox VM is definitely a lot easier than following my tutorials on VGA passthrough. Not only that, most computer users who want or need to use both Windows and Linux will find that this simple solution is all they need.
Continue reading “Why run Windows on Linux?”
Microsoft has done it again! During the last Windows 10 upgrade, it has overwritten the user configuration and enable “Fast Startup”. Why in the world is Microsoft messing around with user preferences?
To be sure, I always turn off Hibernation and Fast Startup, since both interfere with mounting Windows partitions under Linux. But that’s not the only reason I turn off that nuisance. Continue reading “Microsoft – stop messing with your users!”
For some years I have encouraged benchmarking of Windows virtual machines (VM), to help users fine-tune the configuration and to get a general idea of how efficient virtualisation with Xen or KVM actually is. My benchmarks – posted under the username “powerhouse” – and those of other users can be found on the Linux Mint forum under Post your Passmark results of your Windows VM and UserBenchmark – post your results. When reviewing some of my benchmarks on the UserBenchmark website, it occurred to me that the information on that website can be put to practical use.
Continue reading “Virtual Machines on UserBenchmark”