http://www.osnews.com/story/24261/1_Second_Linux_Boot_to_QT_ Exploring the Future of Computing en-us Copyright 2001-2013, David Adams adam+nospam@osnews.com Fri, 24 May 2013 12:05:46 GMT http://www.osnews.com/images/osnews.gif http://www.osnews.com http://www.osnews.com/thread?457932 http://www.osnews.com/thread?457932 Didn't you guys cover this when it happened in September? Fri, 14 Jan 2011 16:08:00 GMT donotreply@osnews.com (Timmmm) Comments http://www.osnews.com/thread?457937 http://www.osnews.com/thread?457937 Then I must have missed it, I don't remember having seen the news item. Fri, 14 Jan 2011 16:20:00 GMT donotreply@osnews.com (vodoomoth) Comments http://www.osnews.com/thread?457941 http://www.osnews.com/thread?457941 EDIT : NevermindEdited 2011-01-14 16:41 UTC Fri, 14 Jan 2011 16:40:00 GMT donotreply@osnews.com (Neolander) Comments http://www.osnews.com/thread?457969 http://www.osnews.com/thread?457969 Qt Embedded a bit "last year". The really exciting stuff is the "Lighthouse" project, that allows Qt to run pretty much everywhere, fast - adaptation to graphics systems is done by plugins, which are relatively easy to create.

As an example, a lone hacker was able to make Qt run on Android using Lighthouse. Lighthouse is also the way Qt will run on Wayland.

Lighthouse will be officially released with Qt 4.8. Fri, 14 Jan 2011 18:38:00 GMT donotreply@osnews.com (vivainio) Comments http://www.osnews.com/thread?457983 http://www.osnews.com/thread?457983 I spend some time too doing that. I can down to 7 second to full boot and 10 to X on a 5400rpm hard drive. Using xfbdev was a bit faster to boot and Qt performances were good, but GTK apps fail to run at decent speed. To get that:

-I start useless services after complete boot,
-Rely on precisely timed disk prefetch
-Avoid IOwait
-Use scripts until some daemon are fully loaded (like parsing dmesg and use mknod to do udev job until the boot process is over, as udev is the slowest of them all.
-Replace startx with sometinng lighter (loop+wait 0.01 until it is ready to start the WM
-Use a faster but still as flexible as KDE WM like the (great) AwesomeWM
-Never spend time without IO, start to load Qt and KDElibs as soon as evertthing else is in the cache.
-Strip down the kernel to a monolithic binary (no module, drop the router stack and all uneeded stuff enabled by default)
-Use -Os for all packets when compiling
-Replace Bash with Dash for the root use
-Replace the DM (KDM/GDM) with a C program that:
--->Swtich the SUID/GUID to the corect user (auto login)
--->create the necessary env vars and create a process shell
--->fork
--->fork1 wait 10 second to create the getty (CTRL+F1,F2, etc)
--->fork0 launch the new startX script
--->fork1 start the other services and load the missing modules like wifi.
-Drop runlevel and manage them manualy (no inittab)
-Be quiet, print as little as possible, printing on framebuffer is slow and lock everything in IOwait mode.
-Drop services dependency tracking (be smart here)
-Start everything in parallel as long as it make sense
-Use as little command as possible
-Remove the #!/bin/bash where it should be #!/bin/shEdited 2011-01-14 20:53 UTC Fri, 14 Jan 2011 20:51:00 GMT donotreply@osnews.com (Elv13) Comments http://www.osnews.com/thread?458040 http://www.osnews.com/thread?458040 I got Haiku to boot in around 7 seconds as well. To get that I did:

- Install Haiku onto a partition.
- Boot the OS

On a serious note, the slides that are linked on the site are a pretty interesting read.Edited 2011-01-15 00:57 UTC Sat, 15 Jan 2011 00:56:00 GMT donotreply@osnews.com (bebop) Comments http://www.osnews.com/thread?458054 http://www.osnews.com/thread?458054 Is the required amount for a trip to the coffee pot. Please don't boot faster than that, thank you. Sat, 15 Jan 2011 02:00:00 GMT donotreply@osnews.com (fretinator) Comments http://www.osnews.com/thread?458078 http://www.osnews.com/thread?458078 Install onto a SSD and booting Haiku-OS drops to less than 5 seconds on 1.67GHz Netbook.Edited 2011-01-15 04:03 UTC Sat, 15 Jan 2011 04:01:00 GMT donotreply@osnews.com (Earl Colby pottinger) Comments http://www.osnews.com/thread?458188 http://www.osnews.com/thread?458188 Yeah, we are still slow. We should turn down the logging and optimize a few things, but atm we want the info from the logs. Sat, 15 Jan 2011 17:06:00 GMT donotreply@osnews.com (TQH !) Comments http://www.osnews.com/thread?458349 http://www.osnews.com/thread?458349 http://www.osnews.com/story/20475 (tricking the bios)

http://www.qnx.com/download/feature.html?programid=17991

http://blog.internetnews.com/skerner/2009/07/linux-achieves-1-secon...

Kochise Sun, 16 Jan 2011 09:00:00 GMT donotreply@osnews.com (Kochise) Comments http://www.osnews.com/thread?458475 http://www.osnews.com/thread?458475 on 300 MHz ARM, NAND flash:
http://www.makelinux.com/emb/fastboot/ Sun, 16 Jan 2011 23:33:00 GMT donotreply@osnews.com (constantine) Comments