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Please, help me understand why Workstation Bridged Network is much slower than Virtual Box's (alien.top)

submitted 1 year ago by UltimateBachson@alien.top to c/homelab@selfhosted.forum

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[–] cbugk@alien.top 1 points 1 year ago (1 children)

Ok a bit of trivia out of my chest first [source][1]:

Para-virtualization is guest being aware to call high level command to hypervisor, rather than calling hardware commands.
Hardware assisted virtualization: Silicon having instructions to fasten virtualization.

I thought those two were inseperable for some time, turns out they were not.

This seems irrelevant, but VMXNET3 could be paravirtualized but not hardware assisted by virtue (emulated E1000)

While [PVRDMA][2] (allowing shared memory between VMs which have PVRDMA) does similar to what Ilinux bridges does by defauit (IPTABLES forwarding without emulation). Hardware assisted para-virtualization by virtue :D

This has the potential to run above 1Gbit, could you try?

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[–] baithammer@alien.top 1 points 1 year ago (1 children)

Linux bridges use ebtables, not iptables as it operates at layer 2 and not layer 3.

[–] cbugk@alien.top 1 points 1 year ago

TIL, thx.