5 ms·

> AF_PACKET Just run a Linux hyper-v vm. That's what WSL2 is doing under the hood anyway. I run it this way and it's great. I have windows terminal auto ssh in

> AF_PACKET Just run a Linux hyper-v vm. That's what WSL2 is doing under the hood anyway. I run it this way and it's great. I have windows terminal auto ssh into it. Performance is great. And using the X server x410 on the windows side gui performance is fantastic (though no hardware acceleration) because instead of ssh tunneling x410 suports AF_VSOCK for the x socket, which hyper-v supports for performance as good as a domain socket on the same machine.

mauflows 6y ago
I've had trouble researching if WSL2 is in fact a hyper-v managed VM. I've seen some documentation referring to WSL2 as a tightly integrated Krypton (scaled down hyper-V) VM. It seems to imply the host overhead isn't as high as a guest on hyper-V
- monocasa 6y ago
  AFAICT Krypton is stripped down in the sense that a lot of the management framework is gone, but as far as the guest is concerned, it's running on hyper-v.
- bitcrazed 6y ago
  WSL uses a Hyper-V derived virtual machine that is * Sparse & light - they only allocate resources from the host when needed, and release them back to the host when freed * Fast - it can boot a WSL distro from cold in < 2s * Transitional - these lightweight VMs are designed to run for up to days-weeks at a time Full Hyper-V VMs aim to (generally) grab all the resources they can and keep hold of those resources as long as possible in case they're needed. Full VMs are designed to run for months-years at a time. WSL's VMs are MUCH less impactful on the host - FWIW, I run 2-3 WSL distros at a time on my 4 year old 16GB Surface Pro 4 and don't even notice that they're running.
  - mauflows 6y ago
    But then you have this thread with people running Cron jobs to free cached memory: https://github.com/microsoft/WSL/issues/4166 https://github.com/microsoft/WSL/issues/4166 I imagine this will be addressed, but claims of lightweight seem exaggerated? But even more on my mind is the impact on the windows host. Is it running as a guest under hyper v? What's the overhead?
  - rjeli 6y ago
    ^ ms pm

mauflows 6y ago

I've had trouble researching if WSL2 is in fact a hyper-v managed VM. I've seen some documentation referring to WSL2 as a tightly integrated Krypton (scaled down hyper-V) VM. It seems to imply the host overhead isn't as high as a guest on hyper-V

monocasa 6y ago
AFAICT Krypton is stripped down in the sense that a lot of the management framework is gone, but as far as the guest is concerned, it's running on hyper-v.
bitcrazed 6y ago
WSL uses a Hyper-V derived virtual machine that is * Sparse & light - they only allocate resources from the host when needed, and release them back to the host when freed * Fast - it can boot a WSL distro from cold in < 2s * Transitional - these lightweight VMs are designed to run for up to days-weeks at a time Full Hyper-V VMs aim to (generally) grab all the resources they can and keep hold of those resources as long as possible in case they're needed. Full VMs are designed to run for months-years at a time. WSL's VMs are MUCH less impactful on the host - FWIW, I run 2-3 WSL distros at a time on my 4 year old 16GB Surface Pro 4 and don't even notice that they're running.
- mauflows 6y ago
  But then you have this thread with people running Cron jobs to free cached memory: https://github.com/microsoft/WSL/issues/4166 https://github.com/microsoft/WSL/issues/4166 I imagine this will be addressed, but claims of lightweight seem exaggerated? But even more on my mind is the impact on the windows host. Is it running as a guest under hyper v? What's the overhead?
- rjeli 6y ago
  ^ ms pm