Sample Boot Charts

Fedora

This was the first boot chart created (no disk utilization information yet):

SVG

It immediately pinpointed problems in the Fedora Core 3 boot process:
- rhgb was burning too much CPU (the bug was immediately fixed)
- modprobe floppy on a floppy-less laptop takes 4 seconds
- the implications of synchronous logging with syslogd
This chart shows the current state, where experiments with early readahead and disk utilization are being made. Note that the boot process duration went from 1:38 to 0:48.

SVG
David Zeuthen did a great analysis of the Fedora boot process and included some boot charts.

Stephan Kulow <coolo at suse de> has been working on optimizing the SUSE boot process:

SVG

Paul Pacheco <paul pacheco at wavecode com> is working on improving the Gentoo boot process. The following charts display the default Gentoo bootup (1:17) and Paul's improved version (0:37):

SVG

SVG

Geoffrey McRae <Geoffrey MCRAE at dewr gov au> managed to improve the boot time of a fully loaded Debian server:

There's a Wiki page dedicated to profiling the Mandriva boot process with bootchart.

Robert Helgesson <rycee at home se> compared sequential and parallel script execution on Source Mage Linux:

SVG

SVG

Vagner A. Farias <vfarias at conectiva com br> sent the boot chart for Conectiva Linux:

SVG

Kuniyasu Suzaki <k suzaki at aist go jp> and the developers of KNOPPIX Japanese edition have managed to reduce the time needed to boot the KNOPPIX 3.7 CD by 60 seconds using readahead. Boot charts included.

Tim Scully <tim scully at theopenway net> ran bootchart on RHEL4 with the Xen hypervisor: