Can we make readahead more robust to package updates?
Karel Zak
kzak at redhat.com
Wed Feb 14 22:14:11 UTC 2007
On Wed, Feb 14, 2007 at 01:43:51PM -0500, Tony Nelson wrote:
> I think you're saying that the daemon will terminate after collecting data
> during boot, but the readahead.whenever files will only be regenerated when
I'm not sure if we need to run the daemon for every boot. I don't
know how expensive is our audit system... we will see.
> a separate command is run. Thus, after installing, say, a new Firefox, the
> readahead.d/default.later file will have stale entries in it until the user
Prepare a new version of the readahead.d/default.later file is
very simple (one qsort) and I think it will be possible to do it
automatically. So, without a separate command.
More attractive is to generate final version of the lists where
filenames are sorted by first data block -- see "fast mode" in
https://hosted.fedoraproject.org/projects/readahead/browser/README.
Now in FC6 readahead supports the "full mode" only. The readahead in
FC7 will support both modes, but regenerate lists for "fast mode" is
more expensive -- it seems like a good job for cron or some manually
started command.
> notices and runs that command. I expect it will become clear when I
> examine the source.
Yeah, that's always more clear than my mails. Sorry ;-)
Karel
--
Karel Zak <kzak at redhat.com>
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