Really poor performance on /dev/ttyv* only

[Greg 'groggy' Lehey]

On Tuesday,  1 November 2005 at 18:11:08 +1100, Antony Mawer wrote:
> On 1/11/2005 6:02 PM, Greg 'groggy' Lehey wrote:
>> I've just installed -CURRENT on a Dell Inspiron 6000, and I discover
>> that the keyboard response on virtual terminals (/dev/ttyv*) is very
>> slow.  If I keyboard repeat, the echo to the terminal is jerky, about
>> 3 or 4 characters at a time with a marked delay in between.  Under X
>> or over the network there's no problem.  Has anybody else seen this?
>> The kernel isn't 100% GENERIC (I've disabled WITNESS and
>> WITNESS_SKIPSPIN, for example), but I can't see anything that would
>> explain this behaviour.
>
> I've seen this on two FreeBSD 4.7 systems connected via a KVM (sharing
> with two Windows 2003 servers)... typing at the console of them was
> almost like typing via ssh on a satellite connection. Connecting via ssh
> was fine, it was only locally that it was a problem. Resetting the
> keyboard repeat rate on BSD had no discernible impact.

I'd guess that this is a different situation.  FWIW, the Inspiron
series are laptops, and this is at the keyboard.  The machine is brand
new, and I've never had another version of FreeBSD on it, but I
suspect it's -CURRENT rather than the laptop.

Greg
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