A year ago I wrote about the 2D graphics performance impact of the Windows 10 (1803) update inside a virtual machine. As it turned out, the performance impact was related to the Spectre vulnerability patch that Microsoft had introduced. However, the same patch had practically no performance impact on a Windows 10 bare-metal installation.
Time has passed and I wanted to see if there has been any progress. Right now I’m running Windows 10 (1903) with Nvidia driver release 431.36. Windows 10 is up-to-date, Nvidia however already offers a newer version (431.60). Continue reading “Impact of Spectre and Meltdown Protection on Virtual Machine Performance”
For some time I wanted to run a kvm virtual machine with GPU passthrough on a low-end Asus H110M-K D3 motherboard with an i3-6100 CPU and an Nvidia GTX 1060 GPU, but never found the time. Now I finally had a chance to give it a try. While the preparations were easy, I ran into a problem when starting the Windows 10 VM:
Jan 22 15:21:24 alon-i3 kernel: [ 108.514992] vfio_pin_pages_remote: RLIMIT_MEMLOCK (16777216) exceeded
Continue reading “GPU Passthrough with Low-End Intel i3-6100 CPU”
When running a VM with GPU passthrough, that GPU should be bound to the VFIO driver. To make this happen, we need to prevent the regular graphics driver from binding to the passthrough GPU and instead bind the vfio-pci driver.
The most common way to do this is by blacklisting the graphics driver. This works in most cases, but what if you need the graphics driver for another GPU, e.g. the host GPU? Continue reading “Blacklisting Graphics Driver”
Back in 2012 I built a PC around the Intel i7 3930K 6-core/12HT processor which I have been using ever since. While it’s still a strong PC, especially with the upgrades (GPU, SSD) I made, I’m starting to feel that editing photos isn’t as snappy as it used to be. I am also curious in how well the new generation of CPUs lend themselves to VGA passthrough. In short, I’m considering building a new PC. Continue reading “New PC Build”
You may wonder what’s wrong with this fellow (meaning me, the author). Has he completely lost his mind when he proposes a Linux virtual gaming machine? Before you discredit the idea, let me explain. Continue reading “Linux Virtual Gaming Machine”
Installing a Linux Mint 19 VM (or Ubuntu 18.04) with VGA passthrough is surprisingly straightforward. This tutorial follows the Running Windows 10 on Linux using KVM with VGA Passthrough almost step-by-step. I will therefore focus on what’s different from the above tutorial.
While booting the Linux Mint 19 life installation media (ISO) as a VM was easy, the installation of Linux Mint invariably ended with the following error:
The ‘grub-efi-amd64-signed’ package failed to install target/
The following tutorial will describe the steps to overcome this problem (bug?). Continue reading “Installing a Linux Mint 19 (Ubuntu 18.04) VM with VGA Passthrough”
Benchmarking Performance of a Virtual Machine
I have run a number of benchmarks to document the performance of Windows 10 running as a virtual machine on Linux, in the hope other PC users will dive into the fascinating world of virtualization.
Benchmarks are helpful in comparing one system with another, and one configuration with another. I use them for optimizing my Windows 10 performance and for making sure that updates/upgrades haven’t produced unwanted side effects. Continue reading “Windows 10 Virtual Machine Benchmarks”
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”
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)”
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”