Docker For Mac Vs Parallels

Jun 13, 2017 - Docker on Mac Performance: Docker Machine vs Docker for Mac. Inside a provided hypervisor (like VirtualBox, Parallels, and VMWare). Aug 20, 2018 - Docker provides OS-level virtualization; it's different from the hardware-level virtualization (such as Parallel). You didn't virtualize a standalone.

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If you'd like to view their content together, click. This subreddit is not endorsed or sponsored by Apple Inc. How is not operating in kernel space considered a plus for a hypervisor? If it was actually in kernel space, then it would have major performance advantages. They seem to be claiming that running a hypervisor as a kernel-level driver is unsafe because the VMs will operate in kernel space, but this isn't true if the hypervisor is set up to prevent this. I really cannot see the benefit of running a full blown hypervisor in user-space as opposed to running a Windows VM + ssh into a Linux server.

Plus it's totally possible to boot your Mac with KVM and then install OSX as a guest on KVM. You can configure this set up such that OSX will run at near-native speeds. But it's not like your Mac is powerful enough to run a hypervisor with multiple VMs like a traditional x86 hypervisor server.

I'm genuinely asking here, can someone give me a valid use case? How is not operating in kernel space considered a plus for a hypervisor? If it was actually in kernel space, then it would have major performance advantages. By installing something into the kernel, you're either inherently putting something risky into the OS and that risk could potentially have other security holes that others (beyond you) can exploit. Why does an end user application need to install something into the kernel? The only time you should be installing something into the kernel is for a device (VirtualBox requires this, likely Parrallel and Fusion as well). With this sort of Hypervisor, you're avoiding installing anything into the kernel space and using what the OS is allowing (a pass through of Intel's virtualization tech).