Quick question: sc(4) vs vt(4)

Garrett Cooper yaneurabeya at gmail.com
Thu Sep 3 06:12:03 UTC 2015


> On Sep 2, 2015, at 21:58, Pokala, Ravi <rpokala at panasas.com> wrote:
> 
> -----Original Message-----
> From: Pavel Timofeev <timp87 at gmail.com>
> Date: 2015-09-02, Wednesday at 21:46
> To: Ravi Pokala <rpokala at panasas.com>
> Cc: "freebsd-hackers at freebsd.org" <freebsd-hackers at freebsd.org>
> Subject: Re: Quick question: sc(4) vs vt(4)
> 
>> Hi! The only problem I experienced with vt(4) is extremely slow work in
>> default mode under some virtualization platforms, for example, Hyper-V.
> 
> Thanks Pavel, that's good to know. We're mostly concerned with running on
> bare metal, so that won't be a concern for us.
> 
>> vt(4) can be switched to text mode to make things better though.
> 
> Yeah, one of my colleagues found the hw.vga.textmode setting. The VGA
> console is a going to be a rarely-used fallback (the expected case is
> using the serial console), so staying in textmode is just fine.

The performance is a bit slow until it hits userland real and virtual for me... Has been for months.


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