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Premature optimization is the root of all evil
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Classroom Contents
Booting Faster
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- 1 Intro
- 2 Premature optimization is the root of all evil
- 3 Booting is a feature
- 4 login
- 5 Before the OS: Petitboot
- 6 Step 1: Use tricks of the distros
- 7 Step 2: "Faster" hardware?
- 8 quiet kernel = many seconds of boot saved
- 9 [ 4.899386] Run /init as init process
- 10 2.5 seconds for unxz initramfs!
- 11 3 = 17
- 12 MB / 1.75MB/sec = 9.14 seconds
- 13 PCI?
- 14 What about BIG systems?
- 15 Hostboot does on-demand paging...
- 16 Thrashing before there's RAM!
- 17 We read firmware from Flash via a daemon on the BMC
- 18 SBE = "20 second black hole"
- 19 How long do other computers take?
- 20 VGA
- 21 Boot progress on discreet graphics card
- 22 Fast Reboot
