Re: simple task to speed up booting

2014-12-22 Thread Rui Paulo
On Dec 21, 2014, at 21:05, Ian Lepore i...@freebsd.org wrote: So all in all it seems like different kinds of IO need different throttling, something like the attached (which also still has some stats output in it). I can't decide if it's worth committing... it'll have a lot of value to

Re: simple task to speed up booting

2014-12-22 Thread John Baldwin
On Monday, December 22, 2014 12:05:43 am Ian Lepore wrote: On Sun, 2014-12-14 at 10:32 +, 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

Re: simple task to speed up booting

2014-12-22 Thread Poul-Henning Kamp
In message 1419224743.1018.108.ca...@freebsd.org, Ian Lepore writes: On Sun, 2014-12-14 at 10:32 +, 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

Re: simple task to speed up booting

2014-12-22 Thread Ian Lepore
On Mon, 2014-12-22 at 15:15 +, Poul-Henning Kamp wrote: In message 1419224743.1018.108.ca...@freebsd.org, Ian Lepore writes: On Sun, 2014-12-14 at 10:32 +, Poul-Henning Kamp wrote: The rotating swirlie ('-/|\') in the loader accounts for a surprisingly large part of our

Re: simple task to speed up booting

2014-12-22 Thread Poul-Henning Kamp
In message 1419292392.1018.132.ca...@freebsd.org, Ian Lepore writes: Rather than compile-time I made it a run-time setting by adding a twiddle_divisor variable to loader(8). r276079 and r276087. Works for me, Thanks a lot! -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20

Re: simple task to speed up booting

2014-12-21 Thread Ian Lepore
On Sun, 2014-12-14 at 10:32 +, 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

Re: simple task to speed up booting

2014-12-15 Thread Olivier Cochard-Labbé
On Sun, Dec 14, 2014 at 3:52 PM, Ian Lepore i...@freebsd.org wrote: 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,

simple task to speed up booting

2014-12-14 Thread Poul-Henning Kamp
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

Re: simple task to speed up booting

2014-12-14 Thread Mehmet Erol Sanliturk
On Sun, Dec 14, 2014 at 2:32 AM, Poul-Henning Kamp p...@phk.freebsd.dk 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

Re: simple task to speed up booting

2014-12-14 Thread Ian Lepore
On Sun, 2014-12-14 at 10:32 +, 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

Re: simple task to speed up booting

2014-12-14 Thread Mike Karels
On Sun, 2014-12-14 at 10:32 +, 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

Re: simple task to speed up booting

2014-12-14 Thread Alfred Perlstein
On Dec 14, 2014, at 6:52 AM, Ian Lepore wrote: On Sun, 2014-12-14 at 10:32 +, 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

Re: simple task to speed up booting

2014-12-14 Thread Slawa Olhovchenkov
On Sun, Dec 14, 2014 at 07:52:11AM -0700, Ian Lepore wrote: On Sun, 2014-12-14 at 10:32 +, 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

Re: simple task to speed up booting

2014-12-14 Thread Poul-Henning Kamp
In message 1418568731.935.8.ca...@freebsd.org, Ian Lepore writes: 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. 9600 is not from