[Bug 214518] Extremely slow refresh rate in vt on VMware Fusion (EFI firmware)

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=214518

            Bug ID: 214518
           Summary: Extremely slow refresh rate in vt on VMware Fusion
                    (EFI firmware)
           Product: Base System
           Version: 11.0-RELEASE
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs at FreeBSD.org
          Reporter: michel at ngelo.eu
                CC: freebsd-amd64 at FreeBSD.org
                CC: freebsd-amd64 at FreeBSD.org

Booting FreeBSD 11-RELEASE into a VMware Fusion virtual machine set to use the
EFI firmware leads vt to be "very slow" while showing kernel messages.

Latecy returns within acceptable limits when the shell comes up.

To reproduce:

1. Create a new VM in VMware Fusion
2. Edit the .vmx file within the VM directory and add the line firmware = "EFI"
somewhere.
3. Boot from the amd64 ISO disc1.

To be clear: BIOS is the default for a new VMware Fusion VM for a FreeBSD host.

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