Boot poster challenge
Hans de Goede
j.w.r.degoede at hhs.nl
Thu Nov 18 06:51:05 UTC 2004
Why does starting xfs do a find ? Me thinks we can save a few cycels there.
Regards,
Hans
Ziga Mahkovec wrote:
> 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
>
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