[LinuxBIOS] Console debug (boot time)

Richard Smith smithbone at gmail.com
Wed Apr 13 17:14:38 CEST 2005

On 4/13/05, Adam Talbot <talbotx at comcast.net> wrote:
> At what speed do I need to set my console output in linux bios to have it
> not effect boot time of linux bios? 19200, 9600, 4800? This is in standard
> debug, I dont need to see all the information on the screen. Just the key
> points.

Well ouptut at any speed at all affects the boot time so as terse of
output as you can stand is the best speed up.  But if you want ot
minimize the impact of the serial delay then set it as fast as
possible.  I run mine at 115200.

9600 baud    = 1.042 mS per byte.
115200 baud = 86 uS per byte.  

So @115200 in 1 second you can dump 11,500 characters vs 960 @ 9600.

Richard A. Smith

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