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Re: Things to do this week instead of arguing about mixers



-------- Original Message --------
Subject: Re: Things to do this week instead of arguing about mixers
From: Eric Sandeen <sandeen redhat com>
To: Development discussions related to Fedora <fedora-devel-list redhat com>
Date: 04/28/2009 08:55 AM

Florian Festi wrote:
Eric Sandeen wrote:
  - rpm? (file installation and/or db files?)
The rpmdb is a bunch of db4 files. In don't think I want to interfere with the db4 engine...

They're often badly fragmented, too :)  But whether or not that matters
much for rpm performance, I dunno.

[root host ~]# filefrag /var/lib/rpm/Packages
/var/lib/rpm/Packages: 844 extents found, perfection would be 1 extent
[root host ~]# ls -lh /var/lib/rpm/Packages
-rw-r--r-- 1 rpm rpm 52M Apr 27 15:40 /var/lib/rpm/Packages


Somehow XFS is doing a much better job. This is from a four year old system:

$ sudo filefrag /var/lib/rpm/Packages
/var/lib/rpm/Packages: 2 extents found
$ ls -lh /var/lib/rpm/Packages
-rw-r--r-- 1 rpm rpm 88M 2009-04-28 10:18 /var/lib/rpm/Packages



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