> > On Sun, 2014-12-14 at 10:32 +0000, Poul-Henning Kamp wrote: > > The rotating swirlie ('-/|\') in the loader accounts for a surprisingly > > large part of our boot time on systems with slow-ish serial consoles. > > > > I think right now it takes a step for each 512 byte read, reducing that > > to once every 64kB or even 1MB would be an improvement with the kind of > > kernel sizes we have today. > >
> I experimented with that a while ago using the attached patch and was > disappointed with the results. As I vaguely remember it, a divisor of 8 > looked fine, but had no significant speedup. With a divisor of 32 the > difference was measureable (only like 1.5 seconds or so faster), but it > gave the impression that something was wrong, and the overall perception > was that it was slower rather than faster, despite what a stopwatch > said. > I was testing at 115kbps, maybe at 9600 it would be significant. I > don't understand why anything these days is still defaulting to 9600. > It's the 21st century, but we never got the George Jetson flying cars we > were promised, and apparently we're never going to break loose from the > standards set by accoustic-coupled modems. AFAIK, accoustic-coupled modems topped out at 300 baud; that's the fastest one I've used, anyway. Defaults are hard to change, though. Mike _______________________________________________ email@example.com mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"