[Fwd: udev performance]

Bernardo Innocenti bernie at codewiz.org
Tue Sep 11 11:29:53 EDT 2007

-------- Original Message --------
Subject: udev performance
Date: Tue, 11 Sep 2007 15:42:15 +0200
From: Harald Hoyer <harald at redhat.com>
Reply-To: Development discussions related to Fedora <fedora-devel-list at redhat.com>
To: Development discussions related to Fedora Core <fedora-devel-list at redhat.com>

For all of you who are bothered by the performance of udev:

I did some profiling, where udev spents its time... so here are the numbers:

Out of 3.63s of measured activity udev spent:

44.1% (1,6s) with /sbin/modprobe
13.3% (0,48s) with persistent-storage (mostly vol_id)
12% (0.44s) with 60-net.rules
10.5% (0.38s) with 90-alsa.rules
7% (0.25s) with pam_console (which will go away anyway)

Your numbers may vary because of different hardware.

   //  Bernardo Innocenti - http://www.codewiz.org/
 \X/ One Laptop Per Child - http://www.laptop.org/
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