Boot poster challenge

[Ziga Mahkovec]

On Wed, 2004-11-17 at 13:45 +0100, Terje Bless wrote:
> What happens to overall boot time if rhgb and dhclient is disabled, with and
> without readahead?

I already posted some results with different rhgb/readahead
combinations.  Before I try all other options, I'd much rather complete
the work, put it online and let people try it out.  Some of the issues
seen in these charts (e.g. 'modprobe floppy') are specific to my laptop.

> Also interesting would be a graph of a minimal boot — disable all nonessential
> services; portmap, rpc, gpm, cups, etc. — into text console. It'd reduce the
> “noise” in the graph and might reveal something interesting about the
> remaining processes.

Ha, no horizontal bar for this one:
http://www.klika.si/ziga/bootchart/bootchart-minimal.png

That's with runlevel 3 and only the following services:
xfs, iptables, messagebus, irqbalance, syslog, haldaemon, crond, atd,
anacron, cpuspeed, xinetd.

Exit criteria are mingetty running and system idle.

> Oh, BTW, what is that apparent zombie of S04readahead_early? Just a timing
> issue with the sampling?

If you take a look at the log file that produced the image
(http://www.klika.si/ziga/bootchart/bootop.log.rhgbfix.gz):

@@ 3704
2085  2079  4356 3372 S  0.0   0:00.00 initlog -q -c /etc/rc5.d/S04readahead_ea
2086  2085     0    0 Z  0.0   0:00.00 [S04readahead_ea] <defunct>

It seems related to:
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=64603

-- 
Ziga