Virtualization tools and techniques

Performance of virtual storage (part 2) : QEMU

Virtualization Linux Sysadmin

In a previous blog post, I evaluated the performance penalty of virtual storage. I compared different host filesystems and different hypervisors (including QEMU). The conclusion was pretty harsh: in all tested configurations, virtual disks are almost 10 times slower than host drives. In this blog post, I will test additional QEMU configuration options, to see if I can get better results...

Performance penalty of storage virtualization

Virtualization Linux

In a previous blog post, I showed how to use sysbench to benchmark a Linux system. I ran the tool on various systems I had access to, and I was staggered by the performance penalty of virtual storage: a virtual disk (vdi) is roughly 10 times slower than the actual disk it is reading from or writing to. In this blog post, I want to show the results of some additional tests that, sadly enough, will only confirm this observation...

Virtual Machine Manager : the graphical interface for QEMU

Virtualization Linux

When discussing desktop hypervisors, one usually think to the main commercial players: VMware Workstation, VMware Fusion (for Mac), Hyper-V (built-in Windows) and VirtualBox. Actually, on Linux QEMU/KVM is also a solution thanks to the Virtual Machine Manager.

New ways to run Kali Linux on Windows using WSL

Pentesting Offensive Security Linux Virtualization

Some time ago I wrote a blog about Installing Linux Bash Shell (and Metasploit) on Windows 10. This is great, when we want to enjoy the best of both worlds- keep using Windows, with its out-of-the-box configuration and set-up, and still be able to use the powerful tools available for the Linux distribution. In my previous blog I went through the steps necessary for setting up WSL and installing an Ubuntu and Kali Linux distribution. Since then, a lot of advancements have been made to facilitate the use of these distributions for Windows Users.

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