udev performance

Harald Hoyer harald at redhat.com
Tue Sep 11 15:45:24 UTC 2007

Harald Hoyer schrieb:
> Bill Nottingham schrieb:
>> Harald Hoyer (harald at redhat.com) said:
>>> 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:
>> What rules were installed (out of all of the Fedora universe) - is this
>> a base install?
>> Bill
> This was a F7 with latest udev-115. I will rerun this test with a 
> rules-everything F8.

Ok, did this with a rules-everything-rawhide on my laptop:

26 seconds

85% (22.3s) in modprobe
7.5% (2s) in 60-openct.rules:26 PROGRAM="/bin/sleep 0.1"

rest is below 0.5 seconds...
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