On 20 August 2014 15:56, Steven Chamberlain <ste...@pyro.eu.org> wrote: > Hi, > > I've tested for this vt(4) issue in upstream's own kernel build from: > ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/amd64/10.0-STABLE > and it is affected as well. It is only a problem when using Qemu with > the "-enable-kvm" option (and some virtualisation platforms will do this) :
There is a patch in discussion to fix the vt_vga performance issue that you could try out if you like. The thread is here: http://lists.freebsd.org/pipermail/freebsd-current/2014-August/051731.html The current version of the patch: https://people.freebsd.org/~dumbbell/vt/vt-vga.5.patch We plan to get a version of this into 10.1-RELEASE. > > On 08/08/14 01:52, Steven Chamberlain wrote: >> With hw.vga.textmode=1, it takes about a second for the first kernel >> messages to fill the screen; the only apparent delay here would be the >> kernel doing things between printing each line of output. >> >> With hw.vga.textmode=0, the same takes about 6 seconds, with noticeable >> delay between printing each character (like a really slow serial tty) >> and even slower once the screen is filled and starts to scroll. > > I could file a FreeBSD PR about this 'soon', but can't right now, sorry. > > Thanks, > Regards, > -- > Steven Chamberlain > ste...@pyro.eu.org -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
